{"id":1611,"date":"2021-12-08T15:40:17","date_gmt":"2021-12-08T07:40:17","guid":{"rendered":"https:\/\/aif.amtbbs.org\/?p=1611"},"modified":"2021-12-08T15:40:17","modified_gmt":"2021-12-08T07:40:17","slug":"%e6%9c%80%e5%85%a8%e9%9d%a2%e7%9a%84python%e9%87%8d%e7%82%b9%e7%9f%a5%e8%af%86%e6%b1%87%e6%80%bb%ef%bc%8c%e5%bb%ba%e8%ae%ae%e6%94%b6%e8%97%8f%ef%bc%81","status":"publish","type":"post","link":"https:\/\/aif.amtbbs.org\/index.php\/2021\/12\/08\/1611\/","title":{"rendered":"\u6700\u5168\u9762\u7684Python\u91cd\u70b9\u77e5\u8bc6\u6c47\u603b\uff0c\u5efa\u8bae\u6536\u85cf\uff01"},"content":{"rendered":"<section><span>\u662f\u6765\u81ea SegmentFault \u4e0a\u7684\u5f00\u53d1\u8005@\u4e8c\u5341\u4e00\u603b\u7ed3\u7684 Python \u91cd\u70b9\u3002\u7531\u4e8e\u603b\u7ed3\u4e86\u5f88\u591a\u4e1c\u897f\uff0c\u6240\u4ee5\u7bc7\u5e45\u6709\u70b9\u957f\uff0c\u8fd9\u4e5f\u662f\u4f5c\u8005\u7684\u201c\u7f1d\u7f1d\u8865\u8865\u201d\u603b\u7ed3\u4e86\u597d\u4e45\u7684\u4e1c\u897f\u3002<\/span><\/section>\n<section><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1612\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/uploads\/2021\/12\/4ffce04d92a4d6cb21c1494cdfcd6dc1-6.jpg\" width=\"535\" height=\"300\" alt=\"\u56fe\u7247\" srcset=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2021\/12\/4ffce04d92a4d6cb21c1494cdfcd6dc1-6.jpg 535w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2021\/12\/4ffce04d92a4d6cb21c1494cdfcd6dc1-6-300x168.jpg 300w\" sizes=\"auto, (max-width: 535px) 100vw, 535px\" \/><\/section>\n<p><strong><span>Py2 VS Py3<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6253\u5370\u6210\u4e3a\u51fd\u6570\uff0cpython2\u662f\u5173\u952e\u5b57<\/span><\/li>\n<li><span>\u4e0d\u518d\u6709unicode\u5bf9\u8c61\uff0c\u9ed8\u8ba4str\u5c31\u662funicode<\/span><\/li>\n<li><span>python3\u9664\u53f7\u8fd4\u56de\u6d6e\u70b9\u6570<\/span><\/li>\n<li><span>\u6ca1\u6709\u4e86\u957f\u7c7b\u578b<\/span><\/li>\n<li><span>xrange\u4e0d\u5b58\u5728\uff0crange\u66ff\u4ee3\u4e86xrange<\/span><\/li>\n<li><span>\u53ef\u4ee5\u4f7f\u7528\u4e2d\u6587\u5b9a\u4e49\u51fd\u6570\u540d\u53d8\u91cf\u540d<\/span><\/li>\n<li><span>\u9ad8\u7ea7\u89e3\u5305\u548c*\u89e3\u5305<\/span><\/li>\n<li><span>\u9650\u5b9a\u5173\u952e\u5b57\u53c2\u6570*\u540e\u7684\u53d8\u91cf\u5fc5\u987b\u52a0\u5165\u540d\u5b57=\u503c<\/span><\/li>\n<li><span>\u4ece<\/span><\/li>\n<li><span>iteritems \u79fb\u9664\u53d8\u6210items()<\/span><\/li>\n<li><span>yield from \u94fe\u63a5\u5b50\u751f\u6210\u5668<\/span><\/li>\n<li><span>asyncio,async\/await \u539f\u751f\u534f\u7a0b\u652f\u6301\u5f02\u6b65\u7f16\u7a0b<\/span><\/li>\n<li><span>\u6dfb\u52a0 enum\u3001mock\u3001ipaddress\u3001concurrent.futures\u3001asyncio urllib\u3001selector<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e0d\u540c\u7c7b\u95f4\u4e0d\u80fd\u8fdb\u884c\u6bd4\u8f83<\/span><\/li>\n<li><span>\u540c\u4e00\u679a\u4e3e\u7c7b\u4e4b\u95f4\u53ea\u80fd\u8fdb\u884c\u76f8\u540c\u7684\u6bd4\u8f83<\/span><\/li>\n<li><span>\u679a\u4e3e\u7c7b\u7684\u4f7f\u7528(\u7f16\u53f7\u9ed8\u8ba4\u4ece1\u5f00\u59cb)<\/span><\/li>\n<li><span>\u4e3a\u4e86\u907f\u514d\u679a\u4e3e\u7c7b\u4e2d\u76f8\u540c\u7684\u679a\u4e3e\u503c\u7684\u51fa\u73b0\uff0c\u53ef\u4ee5\u4f7f\u7528@unique\u88c5\u9970\u679a\u4e3e\u7c7b<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span># \u7684\u6ce8\u610f\u4e8b\u9879<\/span><br \/>\n<span>from<\/span><span> enum <\/span><span>import<\/span><span> Enum <\/span><\/p>\n<p><span>class <\/span><span>COLOREnum ): <\/span><br \/>\n<span> YELLOW= <\/span><span>1 <\/span><br \/>\n<span>#YELLOW=2#\u4f1a<\/span><br \/>\n<span> GREEN= <\/span><span>1<\/span><span>\u4e0d\u4f1a\u62a5\u9519,GREEN \u679a\u4e3e\u53ef\u4ee5\u662fYELLOW\u7684\u522b\u540d<\/span><br \/>\n<span> BLACK= <\/span><span>3<\/span><br \/>\n<span> RED= <\/span><span>4<\/span><br \/>\n<span> print( COLOR.GREEN\uff09<\/span><span>#COLOR.YELLOW\uff0c\u8fd8\u662f\u4f1a\u6253\u5370\u51faYELLOW <\/span><br \/>\n<span>for<\/span><span> i <\/span><span>in<\/span><span> COLOR\uff1a<\/span><span>#\u904d\u5386\u4e00\u4e0bCOLOR\u5e76\u4e0d\u4f1a\u6709GREEN<\/span><br \/>\n<span> print(i) <\/span><br \/>\n<span>#COLOR.YELLOW\\nCOLOR.BLACK\\nCOLOR.RED\\n\u600e\u4e48\u628a\u53e6\u7c7b\u904d\u5386\u51fa\u6765<\/span><br \/>\n<span>for<\/span><span> i <\/span><span>in<\/span><span> COLOR.__members__.items(): <\/span><br \/>\n<span> print(i) <\/span><br \/>\n<span># output:(&#8216;YELLOW&#8217;, &lt;COLOR.YELLOW: 1&gt;)\\n(&#8216;GREEN&#8217;, &lt;COLOR.YELLOW: 1&gt;)\\n( &#8216;BLACK&#8217;, &lt;COLOR.BLACK: 3&gt;)\\n(&#8216;RED&#8217;, &lt;COLOR.RED: 4&gt;)<\/span><br \/>\n<span>for<\/span><span> i <\/span><span>in<\/span><span> COLOR.__members__: <\/span><br \/>\n<span> print(i) <\/span><br \/>\n<span># output:YELLOW\\nGREEN\\nBLACK\\nRED <\/span><\/p>\n<p><span>#\u679a\u4e3e\u8f6c\u6362<\/span><br \/>\n<span>#\u6700\u597d\u5728\u6570\u636e\u5e93\u8bbf\u95ee\u4f7f\u7528\u679a\u4e3e\u7684\u6570\u503c\u800c\u4e0d\u662f\u4f7f\u7528\u6807\u7b7e<\/span><br \/>\n<span>\u59d3\u540d<\/span><span>\u5b57\u7b26\u4e32#\u5728\u4ee3\u7801\u91cc\u9762\u4f7f\u7528\u5f20\u4e3e\u7c7b<\/span><br \/>\n<span>a= <\/span><span>1<\/span><br \/>\n<span> print(COLOR(a)) <\/span><span># output:COLOR.YELLOW<\/span><\/p>\n<p><strong><span>py2\/3 \u8f6c\u6362\u5de5\u5177<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u516d\u6a21\u5757\uff1apyton2\u548cpyton3\u7684\u6a21\u5757<\/span><\/li>\n<li><span>2to3\u5de5\u5177\uff1a\u4fee\u6539\u4ee3\u7801\u8bed\u6cd5\u7248\u672c<\/span><\/li>\n<li><span>__future__\uff1a\u4f7f\u7528\u4e0b\u4e00\u4e2a\u7248\u672c\u7684\u529f\u80fd<\/span><\/li>\n<\/ul>\n<p><strong><span>\u5e38\u7528\u7684\u5e93<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5fc5\u987b\u77e5\u9053\u7684\u6536\u85cf<\/span>\n<p><span>https:\/\/segmentfault.com\/a\/1190000017385799<\/span><\/li>\n<li><span>python\u6392\u5e8f\u64cd\u4f5c\u53caheapq\u6a21\u5757<\/span>\n<p><span>https:\/\/segmentfault.com\/a\/1190000017383322<\/span><\/li>\n<li><span>itertools\u6a21\u5757\u8d85\u5b9e\u7528\u65b9\u6cd5<\/span>\n<p><span>https:\/\/segmentfault.com\/a\/1190000017416590<\/span><\/li>\n<\/ul>\n<p><strong><span>\u4e0d\u5e38\u7528\u4f46\u5f88\u91cd\u8981\u7684\u5e93<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>dis(\u4ee3\u7801\u5b57\u8282\u7801\u5206\u6790)<\/span><\/li>\n<li><span>\u68c0\u67e5(\u751f\u6210\u5668\u72b6\u6001)<\/span><\/li>\n<li><span>cProfile(\u6027\u80fd\u5206\u6790)<\/span><\/li>\n<li><span>bisect(\u7ef4\u62a4\u6709\u5e8f\u5217\u8868)<\/span><\/li>\n<li><span>\u5339\u914d<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>fnmatch(string,&#8221;*.txt&#8221;) #win\u4e0b\u4e0d\u79bb\u6563\u5927\u5c0f\u5199<\/span><\/li>\n<li><span>fnmatch\u6839\u636e\u7cfb\u7edf\u51b3\u5b9a<\/span><\/li>\n<li><span>fnmatchcase \u5b8c\u5168\u53d8\u91cf\u5927\u5c0f\u5199<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>timeit(\u4ee3\u7801\u6267\u884c\u65f6\u95f4)<\/span><\/li>\n<\/ul>\n<p><span>def <\/span> <span>isLen <\/span><span>(strString)<\/span><span> : <\/span><br \/>\n<span>#\u8fd8\u662f\u5e94\u8be5\u4f7f\u7528\u4e09\u5143\u8868\u8fbe\u5f0f\uff0c\u66f4\u5feb<\/span><br \/>\n<span>return <\/span> <span>True <\/span> <span>if<\/span><span> len(strString)&gt;<\/span><span> 6 <\/span> <span>else <\/span> <span>False <\/span><\/p>\n<p><span>def <\/span> <span>isLen1 <\/span><span>(strString)<\/span><span> : <\/span><br \/>\n<span>#\u8fd9\u91cc\u6ce8\u610ffalse\u548ctrue\u7684\u4f4d\u7f6e<\/span><br \/>\n<span>return<\/span><span> [<\/span><span> False<\/span><span> ,<\/span><span> True<\/span><span> ][len (strString)&gt;<\/span><span> 6<\/span><span> ]<\/span><br \/>\n<span> import<\/span><span> timeit<\/span><br \/>\n<span> print(timeit.timeit(<\/span><span> &#8216;isLen1(&#8220;5fsdfsdfsaf&#8221;)&#8217;<\/span><span> ,setup=<\/span><span> &#8220;from __main__ import isLen1&#8221;<\/span><span> ))<\/span><\/p>\n<p><span> print(timeit.timeit(<\/span><span> &#8216;isLen(&#8220;5fsdfsdfsaf&#8221;)&#8217;<\/span><span> ,setup=<\/span><span> &#8220;\u4ece __main__ \u5bfc\u5165 isLen&#8221;<\/span><span> ))<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e0a\u4e0b\u6587\u5e93<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>@contextlib.contextmanager\u4f7f\u751f\u6210\u5668\u51fd\u6570\u53d8\u6210\u4e00\u4e2a\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u7c7b\u578b\uff08\u5305\u542b\u6807\u51c6\u4e86\u5668\u5b9a\u4e49\u7684\u6240\u6709\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u53ef\u4ee5\u5c06\u751f\u6210\u5668\u529f\u80fd\u89e3\u91ca\u4e3a\u5f02\u6b65\u6a21\u5f0f\uff09<\/span><\/li>\n<\/ul>\n<p><span>import<\/span><span> types <\/span><br \/>\n<span> types.coroutine <\/span><span>#\u76f8\u5f53\u4e8e\u5b9e\u73b0\u4e86__await__<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>html(\u5b9e\u73b0\u5bf9html\u7684\u8f6c\u4e49)<\/span><\/li>\n<\/ul>\n<p><span>import<\/span><span> html <\/span><br \/>\n<span> html.escape( <\/span><span>&#8220;&lt;h1&gt;I&#8217;m Jim&lt;\/h1&gt;&#8221;<\/span><span> ) <\/span><span># output:'&lt;h1&gt;I&#8217;m Jim&lt;\/h1&gt;&#8217; <\/span><br \/>\n<span> html.unescape( <\/span><span>&#8216;&lt;h1&gt;\u6211\u662f\u5409\u59c6&lt;\/h1&gt;&#8217;<\/span><span> ) <\/span><span># &lt;h1&gt;\u6211\u662f\u5409\u59c6&lt;\/h1&gt;<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>mock(\u89e3\u51b3\u6d4b\u8bd5\u4f9d\u8d56)<\/span><\/li>\n<li><span>\u5e76\u53d1\uff08\u521b\u5efa\u7ebf\u7a0b\u6c60\u548c\u7ebf\u7a0b\u6c60\uff09<\/span><\/li>\n<\/ul>\n<p><span>from<\/span><span> concurrent.futures <\/span><span>import<\/span><span> ThreadPoolExecutor <\/span><\/p>\n<p><span>pool = ThreadPoolExecutor() <\/span><br \/>\n<span>task = pool.submit(\u51fd\u6570\u540d\uff0c\uff08\u53c2\u6570\uff09) <\/span><span>#\u6b64\u65b9\u6cd5\u4e0d\u4f1a\u7533\u8bf7\uff0c\u4f1a\u7acb\u5373\u8fd4\u56de<\/span><br \/>\n<span>task.done() <\/span><span>#\u67e5\u770b\u4efb\u52a1\u6267\u884c\u662f\u5426\u5b8c\u6210<\/span><br \/>\n<span>task.result() <\/span><span>\uff03\u963b\u585e\u7684\u65b9\u6cd5\uff0c\u67e5\u770b\u4efb\u52a1\u8fd4\u56de\u503c<\/span><br \/>\n<span>task.cancel\uff08\uff09 <\/span><span>\uff03\u53d6\u6d88\u672a\u6267\u884c\u7684\u4efb\u52a1\uff0c\u8fd4\u56de\u771f\u6216\u5047\uff0c\u53d6\u6d88\u6210\u529f\u8fd4\u56de\u771f<\/span><br \/>\n<span>task.add_done_callback\uff08\uff09 <\/span><span>\uff03\u56de\u8c03\u51fd\u6570<\/span><br \/>\n<span>task.running\uff08\uff09 <\/span><span>\uff03\u662f\u5426\u6b63\u5728\u6267\u884c\u7684\u4efb\u52a1\u5c31\u662f\u4e00\u4e2aFuture\u5bf9\u8c61<\/span><\/p>\n<p><span>for<\/span><span> data <\/span><span>in<\/span><span> pool.map(\u51fd\u6570\uff0c\u53c2\u6570\u5217\u8868): <\/span><span>#\u8fd4\u56de\u5df2\u7ecf\u5b8c\u6210\u7684\u4efb\u52a1\u7ed3\u679c\u5217\u8868\uff0c\u6839\u636e\u53c2\u6570\u987a\u5e8f\u6267\u884c<\/span><br \/>\n<span> print(\u8fd4\u56de\u4efb\u52a1\u5b8c\u6210\u5f97\u6267\u884c\u7ed3\u679c\u6570\u636e) <\/span><\/p>\n<p><span>from<\/span><span> concurrent.futures <\/span><span>import<\/span><span> as_completed <\/span><br \/>\n<span>as_completed(\u4efb\u52a1\u5217\u8868) <\/span><span>#\u8fd4\u56de\u5df2\u7ecf\u5b8c\u6210\u7684\u4efb\u52a1\u5217\u8868\uff0c\u5b8c\u6210\u4e00\u4e2a\u6267\u884c\u4e00\u4e2a<\/span><\/p>\n<p><span>wait(\u4efb\u52a1\u5217\u8868,return_when=\u6761\u4ef6) <\/span><span>#\u6839\u636e\u6761\u4ef6\u8fdb\u884c\u4e3b\u7ebf\u7a0b\uff0c\u6709\u56db\u4e2a\u6761\u4ef6<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>selector(\u5c01\u88c5select,\u7528\u6237\u591a\u8def\u5706\u5468io\u7f16\u7a0b)<\/span><\/li>\n<li><span>\u5f02\u6b65<\/span><\/li>\n<\/ul>\n<p><span>future=asyncio.ensure_future(\u534f\u7a0b) \u672a\u6765=loop.create_task(\u534f\u7a0b) <\/span><br \/>\n<span>future.add_done_callback() \u6dfb\u52a0\u4e00\u4e2a\u5b8c\u6210\u540e\u7684\u529f\u80fd\u51fd\u6570<\/span><br \/>\n<span>loop.run_until_complete(future) <\/span><br \/>\n<span>future.result()\u67e5\u770b\u5199\u6210\u8fd4\u56de\u7ed3\u679c<\/span><\/p>\n<p><span>asyncio .wait\uff08\uff09\u63a5\u53d7\u4e00\u4e2a\u53ef\u8fed\u4ee3\u7684\u534f\u7a0b\u5bf9\u8c61<\/span><br \/>\n<span>asynicio.gather\uff08*\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c*\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff09\uff0c\u4e24\u8005\u7ed3\u679c\u76f8\u540c\uff0c\u4f46\u805a\u96c6\u53ef\u4ee5\u6279\u91cf\u53d6\u6d88\uff0c\u6536\u96c6\u5bf9\u8c61.cancel\uff08\uff09<\/span><\/p>\n<p><span>\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u53ea\u6709\u4e00\u4e2a\u73af<\/span><\/p>\n<p><span>\u5728loop.stop\u65f6\u4e00\u5b9a\u8981loop.run_forever()\u5426\u5219\u4f1a\u62a5\u9519<\/span><br \/>\n<span>loop.run_forever()\u53ef\u4ee5\u6267\u884c\u8f85\u52a9\u975e\u7a0b<\/span><br \/>\n<span>\u6700\u540e\u6267\u884c<\/span><span>finally<\/span><span>\u6a21\u5757\u4e2dloopclose.() <\/span><\/p>\n<p><span>asyncioTask.all_tasks()\u6240\u6709\u4efb\u52a1\u7136\u540e\u5b8c\u6210\u5e76\u5e76\u4efb\u52a1.cancel()\u53d6\u6d88<\/span><\/p>\n<p><span>\u504f\u51fd\u6570partial(\u51fd\u6570\uff0c\u53c2\u6570)\u628a\u51fd\u6570\u5305\u88c5\u6210\u53e6\u4e00\u4e2a\u51fd\u6570\u540d\u5176\u53c2\u6570\u5fc5\u987b\u5b9a\u4e49\u51fd\u6570\u7684<\/span><\/p>\n<p><span>\u524d\u9762loop.call_soon(\u51fd\u6570,\u53c2\u6570) <\/span><br \/>\n<span>call_soon_threadsafe()\u7ebf\u7a0b\u5b89\u5168 <\/span><br \/>\n<span>loop.call_later(\u65f6\u95f4,\u51fd\u6570,\u53c2\u6570)<\/span><br \/>\n<span>\u5728\u540c\u4e00\u4ee3\u7801\u5757\u4e2dcall_soon\u4f18\u5148\u6267\u884c\uff0c\u7136\u540e\u591a\u4e2a\u6839\u636e\u65f6\u95f4\u7684\u5347\u5e8f\u8fdb\u884c<\/span><\/p>\n<p><span>\u5982\u679c\u6267\u884c\u975e\u8981\u8fd0\u884c\u6709\u89c6\u9891\u7684\u4ee3\u7801<\/span><br \/>\n<span>\u4f7f\u7528loop.run_in_executor(executor,\u51fd\u6570\uff0c\u53c2\u6570)\u5305\u88c5\u6210\u4e00\u4e2a\u591a\u7ebf\u7a0b\uff0c\u7136\u540e\u901a\u8fc7\u52a8\u6001\u5230\u4e00\u4e2a\u4efb\u52a1\u5217\u8868\u4e2d\uff0c\u901a\u8fc7wait\u6765(task <\/span><\/p>\n<p><span>list ) \u8fd0\u884c\u901a\u8fc7asyncio\u5b9e\u73b0<\/span><br \/>\n<span>reader,writer=await_open_connection(host,port) ) <\/span><br \/>\n<span>writer.writer()\u53d1\u9001\u8bf7\u6c42<\/span><br \/>\n<span>async <\/span><span>for<\/span><span> data <\/span><span>in<\/span><span> reader: <\/span><br \/>\n<span> data=data.decode( <\/span><span>&#8220;utf-8&#8221;<\/span><span> ) <\/span><br \/>\n<span> list.append(data)<\/span><br \/>\n<span>\u7136\u540elist\u4e2d\u5b58\u50a8\u7684\u5c31\u662fhtml <\/span><\/p>\n<p><span>as_completed(tasks)\u5b8c\u6210\u4e00\u4e2a\u8fd4\u56de\u4e00\u4e2a,\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61 <\/span><\/p>\n<p><span>\u534f\u7a0b\u9501<\/span><br \/>\n<span>async <\/span><span>with<\/span><span> Lock()\uff1a<\/span><\/p>\n<p><strong><span>\u87d2\u86c7\u8fdb\u9636<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u8fc7\u7a0b\u95f4\u901a\u4fe1\uff1a<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>Manager\uff08\u5185\u7f6e\u4e86\u591a\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u5b9e\u73b0\u591a\u8fdb\u7a0b\u95f4\u5185\u5b58\u5171\u4eab\uff09<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>from<\/span><span> multiprocessing <\/span><span>import<\/span><span> Manager,Process <\/span><br \/>\n<span>def <\/span> <span>add_data <\/span><span>(p_dict, key, value)<\/span><span> :<\/span><br \/>\n<span> p_dict[key] = value <\/span><\/p>\n<p><span>if<\/span><span> __name__ == <\/span><span>&#8220;__main__&#8221;<\/span><span> : <\/span><br \/>\n<span> progress_dict = Manager().dict() <\/span><br \/>\n<span>from<\/span><span> queue <\/span><span>import<\/span><span> PriorityQueue <\/span><\/p>\n<p><span> first_progress = Process(target=add_data , args=(progress_dict, <\/span><span>&#8220;bobby1&#8221;<\/span><span> , <\/span><span>22<\/span><span> )) <\/span><br \/>\n<span> second_progress = Process(target=add_data, args=(progress_dict, <\/span><span>&#8220;bobby2&#8221;<\/span><span> , <\/span><span>23<\/span><span> )) <\/span><\/p>\n<p><span> first_progress.start() <\/span><br \/>\n<span> second_progress.start() <\/span><br \/>\n<span> first_progress.join()<\/span><br \/>\n<span> second_progress.join()<\/span><\/p>\n<p><span> \u6253\u5370\uff08progress_dict\uff09<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7ba1\u9053\uff08\u9002\u7528\u4e8e\u4e24\u4e2a\u8fdb\u7a0b\uff09<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>from<\/span><span> multiprocessing <\/span><span>import<\/span><span> Pipe,Process <\/span><br \/>\n<span>#pipe \u7684\u6027\u80fd\u4f18\u4e8equeue <\/span><br \/>\n<span>def <\/span> <span>producer <\/span><span>(pipe)<\/span><span> :<\/span><br \/>\n<span> pipe.send( <\/span><span>&#8221; <\/span><span>pipe &#8221; ) <\/span><\/p>\n<p><span>def <\/span> <span>consumer <\/span><span>(pipe)<\/span><span> :<\/span><br \/>\n<span> print(pipe.recv()) <\/span><\/p>\n<p><span>if<\/span><span> __name__ == <\/span><span>&#8220;__main__&#8221;<\/span><span> : <\/span><br \/>\n<span> recevie_pipe , send_pipe = Pipe() <\/span><br \/>\n<span>#pipe \u53ea\u80fd\u9002\u7528\u4e8e\u4e24\u4e2a\u8fdb\u7a0b<\/span><br \/>\n<span> my_producer= Process(target=producer, args=(send_pipe, )) <\/span><br \/>\n<span> my_consumer = Process(target=consumer, args=(recevie_pipe,)) <\/span><\/p>\n<p><span> my_producer.start() <\/span><br \/>\n<span> my_consumer.start() <\/span><br \/>\n<span> my_producer.join() <\/span><br \/>\n<span> my_consumer.join()<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li><span>Queue\uff08\u4e0d\u80fd\u7528\u4e8e\u6d41\u7a0b\u6c60\uff0c\u6d41\u7a0b\u6c60\u95f4\u901a\u4fe1\u9700\u8981\u4f7f\u7528Manager().Queue()\uff09<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>\u4ece<\/span><span>\u591a\u5904\u7406<\/span><span>\u8fdb\u53e3<\/span><span>\u961f\u5217\uff0c\u8fc7\u7a0b<\/span><br \/>\n<span>DEF<\/span> <span>\u751f\u4ea7\u8005<\/span><span>\uff08\u961f\u5217\uff09<\/span><span>\uff1a<\/span><br \/>\n<span> queue.put\uff08<\/span><span>\u201cA\u201d <\/span><span>\uff09<\/span><br \/>\n<span> time.sleep\uff08<\/span><span>2<\/span><span>\uff09<\/span><\/p>\n<p><span>DEF<\/span> <span>\u6d88\u8d39\u8005<\/span><span>\uff08\u961f\u5217\uff09<\/span><span>\uff1a<\/span><br \/>\n<span> time.sleep\uff08<\/span><span>2<\/span><span>\uff09<\/span><br \/>\n<span> \u6570\u636e= queue.get\uff08\uff09<\/span><br \/>\n<span> \u6253\u5370\uff08\u6570\u636e\uff09<\/span><\/p>\n<p><span>\uff0c\u5982\u679c<\/span><span>__name__ == <\/span><span>&#8220;__main__&#8221;<\/span><span> : <\/span><br \/>\n<span> queue = Queue( <\/span><span>10<\/span><span> ) <\/span><br \/>\n<span> my_producer = Process(target=producer, args=(queue,)) <\/span><br \/>\n<span> my_consumer = Process(target=consumer, args=(queue,)) <\/span><br \/>\n<span> my_producer.start() <\/span><br \/>\n<span> my_consumer. start() <\/span><br \/>\n<span> my_producer.join()<\/span><br \/>\n<span> my_consumer.join()<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li><span>\u753b\u6c60<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>DEF<\/span> <span>\u751f\u4ea7\u8005<\/span><span>\uff08\u961f\u5217\uff09<\/span><span>\uff1a<\/span><br \/>\n<span> queue.put\uff08<\/span><span> \u201cA\u201d <\/span><span>\uff09<\/span><br \/>\n<span> time.sleep\uff08<\/span><span> 2<\/span><span>\uff09<\/span><\/p>\n<p><span> DEF<\/span> <span>\u6d88\u8d39\u8005<\/span><span>\uff08\u961f\u5217\uff09<\/span><span>\uff1a<\/span><br \/>\n<span> time.sleep\uff08<\/span><span> 2<\/span><span>\uff09<\/span><br \/>\n<span> \u6570\u636e= queue.get\uff08\uff09<\/span><br \/>\n<span> \u6253\u5370\uff08\u6570\u636e\uff09<\/span><\/p>\n<p><span>\u5982\u679c<\/span><span>__name__ ==<\/span><span> \u201c__main__\u201d<\/span><span> :<\/span><br \/>\n<span> queue = Manager().Queue(<\/span><span> 10<\/span><span> )<\/span><br \/>\n<span> pool = Pool(<\/span><span> 2<\/span><span> )<\/span><\/p>\n<p><span> pool.apply_async(producer, args=(queue,))<\/span><br \/>\n<span> pool.apply_async(consumer, args=(queue,))<\/span><\/p>\n<p><span> pool.close()<\/span><br \/>\n<span> pool.\u52a0\u5165\uff08\uff09<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>sys\u6a21\u5757\u5e38\u7528\u65b9\u6cd5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>argv \u547d\u4ee4\u884c\u53c2\u6570\u5217\u8868,\u7b2c\u4e00\u4e2a\u662f\u7a0b\u5e8f\u5236\u4f5c\u7684\u8def\u5f84<\/span><\/li>\n<li><span>path \u8fd4\u56de\u6a21\u5757\u7684\u641c\u7d22\u8def\u5f84<\/span><\/li>\n<li><span>modules.keys() \u8fd4\u56de\u5df2\u7ecf\u5bfc\u5165\u7684\u6240\u6709\u6a21\u5757\u7684\u5217\u8868<\/span><\/li>\n<li><span>exit(0) \u9000\u51fa\u7a0b\u5e8f<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>a in s or b in s or c in s\u7b80\u5199<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u91c7\u7528any \u65b9\u5f0fall()\uff1a \u4efb\u4f55\u53ef\u66ff\u6362\u5bf9\u8c61\u4e3a\u7a7a\u8fd4\u56deTrue<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span># \u65b9\u6cd5\u4e00<\/span><br \/>\n<span>True <\/span> <span>in<\/span><span> [i <\/span><span>in<\/span><span> s <\/span><span>for<\/span><span> i <\/span><span>in<\/span><span> [a,b,c]] <\/span><br \/>\n<span># \u65b9\u6cd5\u4e8c<\/span><br \/>\n<span> any(i <\/span><span>in<\/span><span> s <\/span><span>for<\/span><span> i <\/span><span>in<\/span><span> [a,b,c]) <\/span><br \/>\n<span># \u65b9\u6cd5\u4e09<\/span><br \/>\n<span> list(filter( <\/span><span>lambda<\/span><span> x:x)<\/span><span>\u5728<\/span><span>s,[a,b,c]))<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u96c6\u5408\u96c6\u5408\u9020\u578b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>{1,2}.issubset({1,2,3})#\u5224\u65ad\u662f\u5426\u662f\u5176\u5b50\u96c6<\/span><\/li>\n<li><span>{1,2,3}.issuperset({1,2})<\/span><\/li>\n<li><span>{}.isdisjoint({})#\u5224\u65ad\u4e24\u4e2a\u96c6\u5408\u4ea4\u96c6\u662f\u5426\u4e3a\u7a7a\uff0c\u662f\u7a7a\u96c6\u5219\u4e3a\u771f<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4ee3\u7801\u4e2d\u6587\u5339\u914d<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>[u4E00-u9FA5]\u5339\u914d\u4e2d\u6587\u6587\u5b57\u533a\u95f4[\u4e00\u5230\u9fa5]<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u67e5\u770b\u7cfb\u7edf\u9ed8\u8ba4\u7f16\u7801\u683c\u5f0f<\/span><\/li>\n<\/ul>\n<p><span>import<\/span><span> sys <\/span><br \/>\n<span> sys.getdefaultencoding() <\/span><span># setdefaultencodeing()\u8bbe\u7f6e\u7cfb\u7edf\u7f16\u7801\u65b9\u5f0f<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u83b7\u53d6\u5c5e\u6027 VS \u83b7\u53d6\u5c5e\u6027<\/span><\/li>\n<\/ul>\n<p><span>class<\/span><span> A(dict): <\/span><br \/>\n<span>def <\/span> <span>__getattr__ <\/span><span>(self,value)<\/span><span> : <\/span><span>#\u5f53\u8bbf\u95ee\u5c5e\u6027\u4e0d\u5b58\u5728\u7684\u65f6\u5019\u8fd4\u56de<\/span><br \/>\n<span>return <\/span> <span>2 <\/span><br \/>\n<span>def <\/span> <span>__getattribute__ <\/span><span>(,item)<\/span><span> : <\/span><span>#\u5c4f\u853d\u6240\u6709\u7684\u5143\u7d20\u8bbf\u95ee<\/span><br \/>\n<span>return<\/span><span> item<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7c7b\u53d8\u91cf\u662f\u4e0d\u4f1a\u5b58\u5165\u5b9e\u4f8b__dict__\u4e2d\u7684\uff0c\u672a\u6765\u5b58\u5728\u4e8e\u7c7b\u7684__dict__\u4e2d<\/span><\/li>\n<li><span>globals\/locals(\u53ef\u4ee5\u53d8\u76f8\u64cd\u4f5c\u4ee3\u7801)<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>globals \u4e2d\u4fdd\u5b58\u4e86\u5f53\u524d\u6a21\u5757\u4e2d\u6240\u6709\u7684\u53d8\u91cf\u5c5e\u6027\u4e0e\u503c<\/span><\/li>\n<li><span>locals \u4e2d\u4fdd\u5b58\u4e86\u5f53\u524d\u73af\u5883\u4e2d\u7684\u6240\u6709\u53d8\u91cf\u5c5e\u6027\u4e0e\u503c<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>python\u53d8\u91cf\u540d\u7684\u89e3\u6790\u673a\u5236(LEGB)<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u672c\u5730\u4f5c\u7528\u57df(Local)<\/span><\/li>\n<li><span>\u5f53\u524d\u4f5c\u7528\u57df\u88ab\u5d4c\u5165\u7684\u672c\u5730\u4f5c\u7528\u57df<\/span><\/li>\n<li><span>\u5168\u5c40\/\u6a21\u5757\u4f5c\u7528\u57df(Global)<\/span><\/li>\n<li><span>\u221a \u4f5c\u7528\u57df\uff08\u5185\u7f6e\uff09<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5b9e\u73b0\u4ece1-100\u6bcf\u4e09\u4e2a\u4e3a\u4e00\u7ec4\u6210\u7ee9<\/span><\/li>\n<\/ul>\n<p><span> \u6253\u5370([[x <\/span><span>for<\/span><span> x <\/span><span>in<\/span><span> range( <\/span><span>1<\/span><span> , <\/span><span>101<\/span><span> )][i:i+ <\/span><span>3<\/span><span> ] <\/span><span>for<\/span><span> i <\/span><span>in<\/span><span> range( <\/span><span>0<\/span><span> , <\/span><span>100<\/span><span> , <\/span><span>3<\/span><span> )])<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4ec0\u4e48\u662f\u5143\u7c7b\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5373\u521b\u5efa\u7c7b\u7684\u7c7b\uff0c\u521b\u5efa\u7c7b\u7684\u65f6\u5019\u5f88\u559c\u6b22metaclass=\u5143\u7c7b\uff0c\u5143\u7c7b\u9700\u8981\u7ee7\u627f\u7c7b\u578b\u800c\u4e0d\u662f\u5bf9\u8c61\uff0c\u56e0\u4e3a\u7c7b\u578b\u5c31\u662f\u5143\u7c7b<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>type.__bases__ <\/span><span>#(&lt;class &#8216;object&#8217;&gt;,)<\/span><br \/>\n<span> object.__bases__ <\/span><span>#()<\/span><br \/>\n<span> type(object) <\/span><span>#&lt;class &#8216;type&#8217;&gt;<\/span><\/p>\n<p><span>class<\/span><span> Yuan(type): <\/span><br \/>\n<span>def <\/span> <span>__new__ <\/span><span>(cls,name,base,attr,*args,**kwargs)<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> type(name,base,attr,*args,**kwargs) <\/span><br \/>\n<span>class<\/span><span> MyClass(metaclass=Yuan): <\/span><br \/>\n<span>pass<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4ec0\u4e48\u662f\u9e2d\u5b50\u7c7b\u578b\uff08\u5373\uff1a\u591a\u6001\uff09\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>Python\u5728\u4f7f\u7528\u53c2\u6570\u7684\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u9ed8\u8ba4\u5224\u65ad\u53c2\u6570\u7c7b\u578b\uff0c\u53ea\u8981\u53c2\u6570\u6709\u6267\u884c\u6761\u4ef6\u5c31\u53ef\u4ee5\u6267\u884c<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6d45\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6d45\u62f7\u8d1d\u62f7\u8d1d\u5185\u5bb9\uff0c\u6d45\u62f7\u8d1d\u62f7\u8d1d\u5730\u5740(\u589e\u52a0\u5f15\u7528\u8ba1\u6570)<\/span><\/li>\n<li><span>\u590d\u5236\u6a21\u5757\u5b9e\u73b0\u795e\u590d\u5236<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5355\u5143\u6d4b\u8bd5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e00\u822c\u6d4b\u8bd5\u7c7b\u7ee7\u627f\u6a21\u5757unittest\u4e0b\u7684TestCase<\/span><\/li>\n<li><span>pytest\u6a21\u5757\u5feb\u6377\u6d4b\u8bd5(\u65b9\u6cd5\u4ee5test_\u5f00\u5934\/\u6d4b\u8bd5\u6587\u4ef6\u4ee5test_\u5f00\u5934\/\u6d4b\u8bd5\u7c7b\u4ee5\u6d4b\u8bd5\u5f00\u5934\uff0c\u5e76\u4e14\u4e0d\u80fd\u5e26\u7740init\u65b9\u6cd5)<\/span><\/li>\n<li><span>\u8986\u76d6\u7387\u7edf\u8ba1\u6d4b\u8bd5\u8986\u76d6\u7387<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>class<\/span><span> MyTest(unittest.TestCase): <\/span><br \/>\n<span>def <\/span> <span>tearDown <\/span><span>(self)<\/span><span> : <\/span><span>#\u516d\u6d4b\u8bd5\u7528\u4f8b\u6267\u884c\u524d\u6267\u884c<\/span><br \/>\n<span> print(<\/span><span>\u672c\u65b9\u6cd5\u5f00\u59cb\u6d4b\u8bd5\u4e86&#8217;<\/span><span> ) <\/span><\/p>\n<p><span>def <\/span> <span>setUp <\/span><span>(self)<\/span><span> : <\/span><span>#\u6d4b\u8bd5\u7528\u4f8b\u6267\u884c\u4e4b\u524d\u7684\u64cd\u4f5c<\/span><br \/>\n<span> print( <\/span><span>&#8216;\u672c\u65b9\u6cd5\u6d4b\u8bd5\u7ed3\u675f&#8217;<\/span><span> ) <\/span><\/p>\n<p><span>@classmethod <\/span><br \/>\n<span>def <\/span> <span>tearDownClass <\/span><span>(self)<\/span><span> : <\/span><span># \u5fc5\u987b\u4f7f\u7528@classmethod\u88c5\u9970\u5668,\u6240\u6709\u6d4b\u8bd5\u8fd0\u884c\u5b8c\u540e\u8fd0\u884c\u4e00\u6b21<\/span><br \/>\n<span> print( <\/span><span>&#8216;\u5f00\u59cb\u6d4b\u8bd5&#8217;<\/span><span> ) <\/span><br \/>\n<span>@classmethod <\/span><br \/>\n<span>def <\/span> <span>setUpClass <\/span><span>(self)<\/span><span> : <\/span><span>#\u5fc5\u987b\u4f7f\u7528@classmethod\u88c5\u9970\u5668,\u6240\u6709test\u8fd0\u884c\u524d\u8fd0\u884c\u4e00\u6b21<\/span><br \/>\n<span> print( <\/span><span>&#8216;\u7ed3\u675f\u6d4b\u8bd5&#8217;<\/span><span> ) <\/span><\/p>\n<p><span>def <\/span> <span>test_a_run<\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> self.assertEqual(<\/span><span> 1<\/span><span> ,<\/span><span> 1<\/span><span> ) <\/span><span> # \u6d4b\u8bd5\u7528\u4f8b<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>gil\u4f1a\u6839\u636e\u6267\u884c\u7684\u5b57\u8282\u7801\u884c\u6570\u4ee5\u53ca\u65f6\u95f4\u7247\u91ca\u653egil\uff0cgil\u5728\u9047\u5230io\u7684\u65f6\u5019\u64cd\u4f5c\u4e3b\u52a8\u91ca\u653e<\/span><\/li>\n<li><span>\u4ec0\u4e48\u662f\u7334\u5b50\u8865\u4e01\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7334\u5b50\u6253\u8865\u4e01\uff0c\u5728\u8fd0\u884c\u7684\u4fee\u6539\u66ff\u6362\u6389\u4f1a\u53d1\u751f\u7684\u8bed\u6cd5\u4e3a\u975e\u65e5\u5e38\u7684\u65b9\u6cd5<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4ec0\u4e48\u662f\u81ea\u7701\uff08Introspection\uff09\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u8fd0\u884c\u65f6\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u7684\u7c7b\u578b\u7684\u80fd\u529b\uff0cid,type,isinstance<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>python\u662f\u503c\u4f20\u9012\u8fd8\u662f\u5f15\u7528\u4f20\u9012\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u90fd\u4e0d\u662f\uff0cpython\u662f\u5171\u4eab\u4f20\u53c2\uff0c\u9ed8\u8ba4\u53c2\u6570\u5728\u6267\u884c\u65f6\u95f4\u6267\u884c\u4e00\u6b21<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>try-except-else-finally\u4e2delse\u548cfinally\u7684\u533a\u522b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5426\u5219\u5728\u4e0d\u53d1\u751f\u5f02\u5e38\u7684\u65f6\u5019\u6267\u884c\uff0c\u7ec8\u4e8e\u6709\u6ca1\u6709\u53d1\u751f\u5f02\u5e38\u5f02\u5e38\u6267\u884c<\/span><\/li>\n<li><span>\u9664\u4e86\u4e00\u6b21\u53ef\u4ee5\u591a\u4e00\u4e9b\u4e0d\u540c\u7684\u5f02\u5e38\uff0c\u4f46\u4e00\u822c\u662f\u4e3a\u4e86\u5bf9\u5f02\u5e38\u8fdb\u884c\u4e0d\u540c\u7684\u5904\u7406\uff0c\u6211\u4eec\u5206\u6b21\u98df\u54c1\u5904\u7406<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>GIL\u89e3\u91ca\u5668\u9501<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u540c\u4e00\u65f6\u95f4\u552f\u4e00\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\uff0cCPython(IPython)\u7684\u7279\u70b9\uff0c\u5176\u4ed6\u89e3\u91ca\u5668\u4e0d\u5b58\u5728<\/span><\/li>\n<li><span>cpu\u5bc6\u96c6\u578b\uff1a\u591a\u8fdb\u7a0b+\u8fdb\u7a0b\u6c60<\/span><\/li>\n<li><span>io\u5bc6\u96c6\u578b\uff1a\u591a\u7ebf\u7a0b\/\u534f\u7a0b<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4ec0\u4e48\u662fCython<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5c06python\u89e3\u91ca\u6210C\u4ee3\u7801\u5de5\u5177<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u751f\u6210\u5668\u548c\u8fed\u4ee3\u5668<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u53ef\u8fed\u4ee3\u5bf9\u8c61\u53ea\u9700\u8981\u5b9e\u73b0__iter__\u65b9\u6cd5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5b9e\u73b0__next__\u548c__iter__\u65b9\u6cd5\u7684\u5bf9\u8c61\u5c31\u662f\u8fed\u4ee3\u5668<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4f7f\u7528\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u6216yield\u7684\u751f\u6210\u5668\u51fd\u6570(\u751f\u6210\u5668\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8fed\u4ee3\u5668)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4ec0\u4e48\u662f\u534f\u7a0b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5c48\u670d<\/span><\/li>\n<li><span>async-awiat<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6bd4\u7ebf\u7a0b\u66f4\u8f7b\u91cf\u7684\u591a\u4efb\u52a1\u65b9\u5f0f<\/span><\/li>\n<li><span>\u5b9e\u73b0\u65b9\u5f0f<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span>\u5b57\u5178\u7ed3\u6784<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e3a\u4e86\u652f\u6301\u5feb\u901f\u67e5\u627e\u4f7f\u7528\u4e86\u54c8\u5e0c\u8868\u4f5c\u4e3a\u7ed3\u6784<\/span><\/li>\n<li><span>\u54c8\u5e0c\u8868\u5e73\u5747\u67e5\u627e\u65f6\u95f4\u590d\u6742\u5ea6\u4e3ao(1)<\/span><\/li>\n<li><span>CPython\u89e3\u91ca\u5668\u4f7f\u7528\u4e8c\u6b21\u63a2\u67e5\u89e3\u51b3\u54c8\u5e0c\u51b2\u7a81\u95ee\u9898<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u54c8\u5e0c\u6269\u5bb9\u548c\u54c8\u5e0c\u51b2\u7a81\u89e3\u51b3\u65b9\u6848<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u94fe\u63a5\u6cd5<\/span><\/li>\n<li><span>\u4e8c\u6b21\u63a2\u67e5\uff08\u5f00\u653e\u8bbf\u95ee\u6cd5\uff09\uff1apython\u4f7f\u7528<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5faa\u73af\u590d\u5236\u5230\u65b0\u7a7a\u95f4\u5b9e\u73b0\u6269\u5bb9<\/span><\/li>\n<li><span>\u51b2\u7a81\u89e3\u51b3\uff1a<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>for<\/span><span> gevent <\/span><span>import<\/span><span> monkey <\/span><br \/>\n<span> monkey.patch_all() <\/span><span>#\u5c06\u4ee3\u7801\u4e2d\u6240\u6709\u7684\u53d1\u5e03\u65b9\u6cd5\u90fd\u8fdb\u884c\u4fee\u6539\uff0c\u53ef\u4ee5\u6307\u5b9a\u5177\u4f53\u8981\u4fee\u6539\u7684\u65b9\u6cd5<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5224\u65ad\u662f\u5426\u4e3a\u751f\u6210\u5668\u6216\u8005\u534f\u7a0b<\/span><\/li>\n<\/ul>\n<p><span> co_flags = func.__code__.co_flags <\/span><\/p>\n<p><span>#\u68c0\u67e5\u662f\u5426\u662f\u534f\u7a0b<\/span><br \/>\n<span>if<\/span><span> co_flags &amp; <\/span><span>0x180<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> func <\/span><\/p>\n<p><span>#\u68c0\u67e5\u662f\u5426\u662f\u751f\u6210\u5668<\/span><br \/>\n<span>if<\/span><span> co_flags &amp; <\/span><span>0x20<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> func<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6590\u6ce2\u90a3\u5951\u89e3\u51b3\u7684\u95ee\u9898\u53ca\u53d8\u5f62<\/span><\/li>\n<\/ul>\n<p><span>#\u4e09\u53ea\u9752\u86d9\u4e00\u6b21\u53ef\u4ee5\u8df3\u4e0a1\u7ea7\uff0c\u4e5f\u53ef\u4ee5\u8df3\u4e0a2\u7ea7\u3002\u6c42\u8be5\u9752\u86d9\u8df3\u4e0a\u4e00\u4e2a\u7ea7\u7684\u53f0\u9636\u3002\u6709\u591a\u5c11\u79cd\u8df3\u6cd5\u3002<\/span><br \/>\n<span>#<\/span><span>\u6c42n\u4e2a2*1\u7684\u5c0f\u692d\u5706\u65e0\u91cd\u53e0\u5730\u8986\u76d6\u4e00\u4e2a2*n\u7684\u5927\u692d\u5706\uff0c\u65b9\u5f0f\u6709\u591a\u5c11\u79cd\u65b9\u6cd5\uff1f<\/span><br \/>\n<span>#\u4e00\uff1a<\/span><br \/>\n<span> fib = <\/span><span>lambda<\/span><span> n: n <\/span><span>if<\/span><span> n &lt;= <\/span><span>2 <\/span> <span>else<\/span><span> fib(n &#8211; <\/span><span>1<\/span><span> ) + fib(n &#8211; <\/span><span>2<\/span><span> ) <\/span><br \/>\n<span>#\u65b9\u5f0f\u4e8c\uff1a<\/span><br \/>\n<span>def <\/span> <span>fib <\/span><span>(n)<\/span><span> :<\/span><br \/>\n<span> a, b = <\/span><span>0<\/span><span> , <\/span><span>1 <\/span><br \/>\n<span>for<\/span><span> _ <\/span><span>in<\/span><span> range(n): <\/span><br \/>\n<span> a, b = b, a + b <\/span><br \/>\n<span>return<\/span><span> b <\/span><\/p>\n<p><span>#\u4e00\u53ea\u9752\u86d9\u4e00\u6b21\u53ef\u4ee5\u8df3\u4e0a1\u7ea7\u53f0\u9636\uff0c\u4e5f\u53ef\u4ee5\u8df3\u4e0a2\u7ea7\u2026\u2026\u5b83\u4e5f\u53ef\u4ee5\u8df3\u4e0a\u00f1\u7ea7\u6c42\u8be5\u9752\u86d9\u8df3\u4e0a\u4e00\u4e2a\u00f1\u7ea7\u7684\u53f0\u9636\u603b\u5171\u6709\u591a\u5c11\u79cd\u8df3\u6cd5\u3002<\/span><br \/>\n<span> FIB =<\/span><span>\u62c9\u59c6\u8fbe<\/span><span>N\uff1aN<\/span><span>\u5982\u679c<\/span><span>\u00f1&lt; <\/span><span>2<\/span> <span>\u522b\u7684<\/span> <span>2<\/span><span> * FIB\uff08N &#8211;<\/span><span>1<\/span><span> )<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u83b7\u53d6\u7535\u8111\u8bbe\u7f6e\u7684\u73af\u5883\u53d8\u91cf<\/span><\/li>\n<\/ul>\n<p><span>import<\/span><span> os <\/span><br \/>\n<span> os.getenv(env_name, <\/span><span>None<\/span><span> ) <\/span><span>#\u83b7\u53d6\u73af\u5883\u53d8\u91cf\u5982\u679c\u4e0d\u5b58\u5728\u4e3aNone<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5783\u573e\u56de\u6536\u5229\u7528<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5f15\u7528\u8ba1\u6570<\/span><\/li>\n<li><span>\u6807\u8bb0\u6e05\u9664<\/span><\/li>\n<li><span>\u5206\u4ee3\u56de\u6536<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>#\u67e5\u770b\u5206\u4ee3\u56de\u6536\u89e6\u53d1<\/span><br \/>\n<span>import<\/span><span> gc <\/span><br \/>\n<span> gc.get_threshold() <\/span><span>#output:(700,10,10)<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u771f\u548c\u5047\u5728\u4ee3\u7801\u4e2d\u5b8c\u5168\u7b49\u4ef7\u4e8e1\u548c0\uff0c\u53ef\u4ee5\u76f4\u63a5\u548c\u6570\u5b57\u8fdb\u884c\u8ba1\u7b97\uff0cinf\u8868\u793a\u65e0\u7a77\u5927<\/span><\/li>\n<li><span>C10M\/C10K<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>C10M\uff1a8\u6838\u5fc3cpu\uff0c64G\u5185\u5b58\uff0c\u572810gbps\u7684\u7f51\u7edc\u4e0a\u4fdd\u63011000\u540c\u65f6\u8fde\u63a5<\/span><\/li>\n<li><span>C10K\uff1a1GHz CPU\uff0c2G\u5185\u5b58\uff0c1gbps\u7f51\u7edc\u73af\u5883\u4e0b\u4fdd\u63011\u4e07\u4e2a\u5ba2\u6237\u7aef\u63d0\u4f9bFTP\u670d\u52a1<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>yield from\u4e0eyield\u7684\u533a\u522b\uff1a<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>yield from \u662f\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c\u800cyield \u6ca1\u6709\u9650\u5236<\/span><\/li>\n<li><span>GeneratorExit\u751f\u6210\u5668\u505c\u6b62\u65f6\u89e6\u53d1<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5355\u4e0b\u5212\u7ebf\u7684\u51e0\u79cd\u7528\u6cd5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5728\u5b9a\u4e49\u53d8\u91cf\u65f6\uff0c\u8868\u793a\u4e3a\u53d8\u91cf<\/span><\/li>\n<li><span>\u5728\u89e3\u5305\u65f6\uff0c\u8868\u793a\u820d\u5f03\u65e0\u7528\u7684\u6570\u636e<\/span><\/li>\n<li><span>\u5728\u4ea4\u4e92\u6a21\u5f0f\u4e2d\u663e\u793a\u4e0a\u4e00\u6b21\u4ee3\u7801\u6267\u884c\u7ed3\u679c<\/span><\/li>\n<li><span>\u53ef\u4ee5\u505a\u6570\u5b57\u7684\u6570\u5b57(111_222_333)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4f7f\u7528break\u5c31\u4e0d\u4f1a\u6267\u884celse<\/span><\/li>\n<li><span>10 \u4ef6\u8f6c2\u4f4d<\/span><\/li>\n<\/ul>\n<p><span>def <\/span> <span>conver_bin <\/span><span>(num)<\/span><span> : <\/span><br \/>\n<span>if<\/span><span> num ==<\/span><span> 0<\/span><span> :<\/span><br \/>\n<span> return<\/span><span> num<\/span><br \/>\n<span> re = []<\/span><br \/>\n<span> while<\/span><span> num:<\/span><br \/>\n<span> num, rem = divmod(num,<\/span><span> 2<\/span><span> )<\/span><br \/>\n<span> re.append(str(rem))<\/span><br \/>\n<span> return <\/span> <span>&#8220;&#8221;<\/span><span> .join(reversed(re)) )<\/span><br \/>\n<span> conver_bin(<\/span><span> 10<\/span><span> )<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>list1 = [&#8216;A&#8217;, &#8216;B&#8217;, &#8216;C&#8217;, &#8216;D&#8217;] \u5982\u4f55\u5f97\u5230\u4ee5list\u4e2d\u5143\u7d20\u547d\u540d\u7684\u65b0\u5217\u8868A=[],B=[],C=[],D=[]\u5462<\/span><\/li>\n<\/ul>\n<p><span> list1 = [ <\/span><span>&#8216;A&#8217;<\/span><span> , <\/span><span>&#8216;B&#8217;<\/span><span> , <\/span><span>&#8216;C&#8217;<\/span><span> , <\/span><span>&#8216;D&#8217;<\/span><span> ] <\/span><\/p>\n<p><span># \u65b9\u6cd5\u4e00<\/span><br \/>\n<span>for<\/span><span> i <\/span><span>in<\/span><span> list1: <\/span><br \/>\n<span> globals()[i] = [] <\/span><span># \u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0python\u7248\u53cd\u5c04<\/span><\/p>\n<p><span>#\u65b9\u6cd5\u4e8c<\/span><br \/>\n<span>for<\/span><span> i <\/span><span>in<\/span><span> list1: <\/span><br \/>\n<span> exec(f <\/span><span>&#8216;{i} = []&#8217;<\/span><span> ) <\/span><span># exec\u6267\u884c\u5b57\u7b26\u4e32\u8bed\u53e5<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>memoryview\u4e0ebytearray$\\color{#000}(\u4e0d\u5e38\u7528\uff0c\u53ea\u662f\u770b\u5230\u4e86\u8bb0\u8f7d\u4e00\u4e0b)$<\/span><\/li>\n<\/ul>\n<p><span>#bytearray\u662f\u4e0d\u4f1a\u547c\u5438\u7684\uff0cbytes\u662f\u4ea7\u751f\u4e0d\u547c\u5438\u7684\uff0cmemoryview\u65b0\u548c\u65b0\u5bf9\u8c61<\/span><br \/>\n<span> a = <\/span><span>&#8216;aaaaaa&#8217;<\/span><br \/>\n<span> ma = memoryview(a) <\/span><br \/>\n<span> ma.readonly <\/span><span>#\u53ea\u8bfb\u7684memoryview<\/span><br \/>\n<span> mb = ma[: <\/span><span>2<\/span><span> ] <\/span><span>#\u4e0d\u4f1a\u65b0\u7684\u5b57\u7b26\u4e32<\/span><\/p>\n<p><span> a = bytearray( <\/span><span>&#8216;aaaaaa&#8217;<\/span><span> ) <\/span><br \/>\n<span> ma = memoryview(a) <\/span><br \/>\n<span> ma.readonly <\/span><span># \u53ef\u5199\u7684memoryview<\/span><br \/>\n<span> mb = ma[: <\/span><span>2<\/span><span> ] <\/span><span># \u4e0d\u4f1a\u4ea7\u751f\u65b0\u7684bytearray<\/span><br \/>\n<span> mb[: <\/span><span>2<\/span><span> ] = <\/span><span>&#8216;bb &#8216; <\/span> <span># \u5bf9mb\u7684\u6539\u53d8\u5c31\u662f\u5bf9ma\u7684\u6539\u53d8<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7701\u7565\u53f7\u7c7b\u578b<\/span><\/li>\n<\/ul>\n<p><span># \u4ee3\u7801\u4e2d\u51fa\u73b0&#8230;\u7701\u7565\u53f7\u5bf9\u8c61\u7684\u98df\u6b32\u5c31\u662f\u4e00\u4e2a<\/span><span>EllipsisL <\/span><br \/>\n<span>= [ <\/span><span>1<\/span><span> , <\/span><span>2<\/span><span> , <\/span><span>3<\/span><span> ] <\/span><br \/>\n<span>L.append(L) <\/span><br \/>\n<span>print(L) <\/span><span># output:[1,2,3,[&#8230;]]<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u61d2\u60f0\u8ba1\u7b97<\/span><\/li>\n<\/ul>\n<p><span>class<\/span><span> lazy(object): <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self, func)<\/span><span> :<\/span><br \/>\n<span> self.func = func <\/span><\/p>\n<p><span>def <\/span> <span>__get__ <\/span><span>(self, instance, cls)<\/span><span> :<\/span><br \/>\n<span> val = self.func(instance) <\/span><span>#\u5176\u7b49\u6548\u6267\u884c\u7684area(c),c\u4e3a\u4e0b\u9762\u7684Circle\u5bf9\u8c61<\/span><br \/>\n<span> setattr(instance, self.func.__name__, val) <\/span><br \/>\n<span>return<\/span><span> val` <\/span><\/p>\n<p><span>class<\/span><span> Circle(object): <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self, radius)<\/span><span> :<\/span><br \/>\n<span> self.radius = radius <\/span><\/p>\n<p><span>@lazy <\/span><br \/>\n<span>def <\/span> <span>area <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> print( <\/span><span>&#8216;evalute &#8216;<\/span><span> )<\/span><br \/>\n<span>\u8fd4\u56de<\/span> <span>3.14<\/span><span> * self.radius ** <\/span><span>2<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u904d\u5386\u6587\u4ef6\uff0c\u4e00\u4e2a\u6587\u4ef6\u5939\uff0c\u5c06\u91cc\u9762\u6240\u6709\u6587\u4ef6\u7684\u8def\u5f84\u6253\u5370\u51fa\u6765\uff08\uff09<\/span><\/li>\n<\/ul>\n<p><span>all_files = [] <\/span><br \/>\n<span>def <\/span> <span>getAllFiles <\/span><span>(directory_path)<\/span><span> : <\/span><br \/>\n<span>import<\/span><span> os <\/span><br \/>\n<span>for<\/span><span> sChild <\/span><span>in<\/span><span> os.listdir(directory_path): <\/span><br \/>\n<span> sChildPath = os.path.join(directory_path,sChild) <\/span><br \/>\n<span>if<\/span><span> os.path.isdir(sChildPath): <\/span><br \/>\n<span> getAllFiles(sChildPath) <\/span><br \/>\n<span>else<\/span><span> : <\/span><br \/>\n<span> all_files.append(sChildPath)<\/span><br \/>\n<span>\u8fd4\u56de<\/span><span>all_files<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6587\u4ef6\u5b58\u50a8\u65f6\uff0c\u6587\u4ef6\u540d\u7684\u5904\u7406<\/span><\/li>\n<\/ul>\n<p><span>#secure_filename\u5c06\u5b57\u7b26\u4e32\u8f6c\u5316\u4e3a\u5b89\u5168\u7684\u6587\u4ef6\u540d<\/span><br \/>\n<span>from<\/span><span> werkzeug <\/span><span>import<\/span><span> secure_filename <\/span><br \/>\n<span>secure_filename( <\/span><span>&#8220;My cool movie.mov&#8221;<\/span><span> ) <\/span><span># output:My_cool_movie.mov<\/span><br \/>\n<span> secure_filename( <\/span><span>&#8220;..\/..\/..\/etc\/passwd&#8221;<\/span><span> ) <\/span><span># output :etc_passwd<\/span><br \/>\n<span> secure_filename( <\/span><span>u&#8217;i contains cool \\xfcml\\xe4uts.txt&#8217;<\/span><span> ) <\/span><span># output:i_contain_cool_umlauts.txt<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u65e5\u671f\u8ba2<\/span><\/li>\n<\/ul>\n<p><span>from<\/span><span> datetime <\/span><span>import<\/span><span> datetime <\/span><\/p>\n<p><span>datetime.now().strftime( <\/span><span>&#8220;%Y-%m-%d&#8221;<\/span><span> ) <\/span><\/p>\n<p><span>import<\/span><span> time <\/span><br \/>\n<span>#\u8fd9\u91cc\u53ea\u6709localtime\u53ef\u4ee5\u88ab\u683c\u5f0f\u5316\uff0ctime\u662f\u4e0d\u80fd\u683c\u5f0f\u5316\u7684<\/span><br \/>\n<span>time.strftime( <\/span><span>&#8220;%Y-%m -%d&#8221;<\/span><span> ,time.localtime())<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5143\u7ec4\u4f7f\u7528+=\u76f8\u540c\u7684\u95ee\u9898<\/span><\/li>\n<\/ul>\n<p><span># \u4f1a\u62a5\u9519\uff0c\u4f46\u662f\u5143\u7ec4\u7684\u503c\u4f1a\u6539\u53d8\uff0c\u56e0\u4e3a t[1]id \u6ca1\u6709\u53d1\u751f\u53d8\u5316<\/span><br \/>\n<span>t=( <\/span><span>1<\/span><span> ,[ <\/span><span>2<\/span><span> , <\/span><span>3<\/span><span> ]) <\/span><br \/>\n<span>t[ <\/span><span>1<\/span><span> ]+=[ <\/span><span>4<\/span><span> , <\/span><span>5<\/span><span> ] <\/span><br \/>\n<span># t[1]\u4f7f\u7528append\\\u6269\u5c55\u65b9\u6cd5\u5e76\u4e0d\u4f1a\u62a5\u9519\uff0c\u5e76\u53ef\u4ee5\u6210\u529f\u6267\u884c<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>__missing__\u4f60\u5e94\u8be5\u77e5\u9053<\/span><\/li>\n<\/ul>\n<p><span>class<\/span><span> Mydict(dict): <\/span><br \/>\n<span>def <\/span> <span>__missing__ <\/span><span>(self,key)<\/span><span> : <\/span> <span># \u5f53Mydict\u4f7f\u7528\u8bbf\u95ee\u8bbf\u95ee\u5c5e\u6027\u4e0d\u5b58\u5728\u7684\u65f6\u5019\u8fd4\u56de\u503c<\/span><br \/>\n<span>return<\/span><span> key<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>+\u4e0e+=<\/span><\/li>\n<\/ul>\n<p><span>#+\u4e0d\u80fd\u4f7f\u7528\u8fde\u63a5\u5217\u8868\u548c\u5143\u7956\uff0c\u800c+=\u53ef\u4ee5\uff08\u901a\u8fc7iadd\u5b9e\u73b0\uff0c\u5185\u90e8\u5b9e\u73b0\u65b9\u5f0f\u4e3aextends()\uff0c\u6240\u4ee5\u53ef\u4ee5\u589e\u52a0\u5143\u7ec4\uff09\uff0c+\u4f1a\u521b\u5efa\u65b0\u5bf9\u8c61<\/span><br \/>\n<span>#\u4e0d\u6dfb\u52a0\u5bf9\u8c61\u6ca1\u6709__iadd__\uff0c\u76f4\u63a5\u4f7f\u7528\u662f__add__\u65b9\u6cd5\uff0c\u56e0\u6b64\u5143\u7956\u53ef\u4ee5\u4f7f\u7528+=\u8fdb\u884c\u5143\u7956\u4e4b\u95f4\u7684\u76f8\u52a0<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5982\u4f55\u5c06\u4e00\u4e2a\u53ef\u8bbf\u95ee\u5bf9\u8c61\u7684\u6240\u6709\u952e\u53d8\u6210\u4e00\u4e2a\u53ef\u8bbf\u95ee\u5bf9\u8c61\u7684\u6240\u6709\u952e\uff1f<\/span><\/li>\n<\/ul>\n<p><span>dict.fromkeys([ <\/span><span>&#8216;jim&#8217;<\/span><span> , <\/span><span>&#8216;han&#8217;<\/span><span> ], <\/span><span>21<\/span><span> ) <\/span><span># \u8f93\u51fa\uff1a{&#8216;jim&#8217;: 21, &#8216;han&#8217;: 21}<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>wireshark\u6293\u5305\u8f6f\u4ef6<\/span><\/li>\n<\/ul>\n<p><strong><span>\u7f51\u7edc\u77e5\u8bc6<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4ec0\u4e48\u662fHTTPS\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5b89\u5168\u7684HTTP\u534f\u8bae\uff0c\u9700\u8981https\u8bc1\u4e66\uff0c\u6570\u636e\u667a\u80fd\uff0c\u7aef\u53e3\u4e3a443\uff0c\u5b89\u5168\uff0c\u540c\u4e00\u7f51\u7ad9httpsseo\u5b66\u751f\u4f1a\u4e0a\u5347<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5e38\u89c1\u54cd\u5e94\u72b6\u6001\u7801<\/span><\/li>\n<\/ul>\n<p><span>204<\/span><span>\u65e0\u5185\u5bb9 \/\/ \u8bf7\u6c42\u6210\u529f\u5904\u7406\uff0c\u6ca1\u6709\u5b9e\u4f53\u7684\u4e3b\u4f53\u8fd4\u56de\uff0c\u4e00\u822c\u8868\u793a\u5220\u9664\u6210\u529f<\/span><br \/>\n<span>206<\/span><span>\u90e8\u5206\u5185\u5bb9 \/\/\u83b7\u53d6\u8303\u56f4\u8bf7\u6c42\u5df2\u6210\u529f\u5904\u7406<\/span><br \/>\n<span>303<\/span><span>\u67e5\u770b\u5176\u4ed6 \/\/ \u4e34\u65f6\u5bfb\u627e\uff0c\u671f\u671b\u4f7f\u7528\u83b7\u53d6\u5b9a\u5411\u83b7\u53d6<\/span><br \/>\n<span>304<\/span><span>\u672a\u4fee\u6539\/ \/\u8bf7\u6c42\u7f13\u5b58\u8d44\u6e90<\/span><br \/>\n<span>307<\/span><span> Temporary Redirect \/\/\u53c2\u6570\u76ee\u6807\uff0c\u53d1\u5e03\u4e0d\u4f1aGet <\/span><br \/>\n<span>401<\/span><span> Unauthorized \/\/\u8ba4\u8bc1\u5931\u8d25<\/span><br \/>\n<span>403<\/span><span> Forbidden \/\/\u8d44\u6e90\u8bf7\u6c42\u88ab\u62d2\u7edd<\/span><br \/>\n<span>400<\/span><span> \/\/\u8bf7\u6c42\u9519\u8bef<\/span><br \/>\n<span>201<\/span><span> \/\/\u6dfb\u52a0\u6216\u66f4\u6539\u6210\u529f<\/span><br \/>\n<span>503<\/span><span> \/\/\u670d\u52a1\u5668\u7ef4\u62a4\u6216\u8d85\u8f7d<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>http\u8bf7\u6c42\u65b9\u6cd5\u7684\u5e42\u7b49\u6027\u53ca\u5b89\u5168\u6027<\/span><\/li>\n<li><span>WSGI<\/span><\/li>\n<\/ul>\n<p><span>#environ\uff1a\u4e00\u4e2a\u5305\u542b\u6240\u6709HTTP\u8bf7\u6c42\u4fe1\u606f\u7684dict\u5bf9\u8c61<\/span><br \/>\n<span># start_response\uff1a\u4e00\u4e2a\u53d1\u9001HTTP\u54cd\u5e94\u7684\u51fd\u6570<\/span><br \/>\n<span>def <\/span> <span>application <\/span><span>(environ, start_response)<\/span><span> :<\/span><br \/>\n<span> start_response( <\/span><span>&#8216;200 OK&#8217;<\/span><span> , [( <\/span><span>&#8216;Content-Type&#8217;<\/span><span> , <\/span><span>&#8216;text\/html&#8217;<\/span><span> ) ])<\/span><br \/>\n<span>\u8fd4\u56de<\/span> <span>&#8216;&lt;h1&gt;Hello, web!&lt;\/h1&gt;&#8217;<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>RPC<\/span><\/li>\n<li><span>CDN<\/span><\/li>\n<li><span>SSL\uff08Secure Sockets Layer \u5b89\u5168\u5957\u5c42\uff09\u53ca\u5176\u7ee7\u4efb\u8005\u63a5\u5c42\u5b89\u5168\uff08Transport Layer Security\uff0cTLS\uff09\u662f\u4e3a\u7f51\u7edc\u901a\u4fe1\u63d0\u4f9b\u5b89\u5168\u53ca\u6570\u636e\u6ce8\u518c\u7684\u4e00\u79cd\u5b89\u5168\u534f\u8bae\u3002<\/span><\/li>\n<li><span>SSH\uff08\u5b89\u5168\u5916\u58f3\u534f\u8bae\uff09\u4e3a Secure Shell \u7684\u7f29\u5199\uff0c\u7531 IETF \u7684\u7f51\u7edc\u5c0f\u7ec4\uff08Network Working Group\uff09\u6240\u5236\u5b9a\uff1bSSH \u4e3a\u5efa\u7acb\u5728\u5e94\u7528\u5c42\u57fa\u7840\u4e0a\u7684\u5b89\u5168\u534f\u8bae\u3002SSH \u662f\u76ee\u524d\u8f83\u53ef\u9760\uff0c\u4e13\u4e3a\u8fdc\u7a0b\u767b\u5f55\u4f1a\u8bdd\u548c\u5176\u4ed6\u7f51\u7edc\u670d\u52a1\u63d0\u4f9b\u5b89\u5168\u6027\u7684\u534f\u8bae\u3002\u5229\u7528 SSH \u534f\u8bae\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u8fdc\u7a0b\u7ba1\u7406\u8fc7\u7a0b\u4e2d\u7684\u4fe1\u606f\u4f7f\u7528\u95ee\u9898\u3002SSH \u6700\u521d\u662f UNIX \u7cfb\u7edf\u4e0a\u7684\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u540e\u6765\u53c8\u8fc5\u901f\u6269\u5c55\u5230\u5176\u4ed6\u64cd\u4f5c\u5e73\u53f0\u6b63\u786e\u3002SSH \u5728\u65f6\u53ef\u7ed3\u7f51\u7edc\u4e2d\u7684\u6f0f\u6d1e\u3002SSH\u5ba2\u6237\u7aef\u9002\u7528\u4e8e\u591a\u79cd\u5e73\u53f0\u3002\u51e0\u4e4e\u6240\u6709UNIX\u5e73\u53f0\u2014\u2014\u5305\u62ecHP-UX\u3001Linux\u3001AIX\u3001Solaris\u3001Digital UNIX\u3001Irix\uff0c\u4ee5\u53ca\u5176\u4ed6\u5e73\u53f0\uff0c\u90fd\u53ef\u4ee5\u8fd0\u884cSSH\u3002<\/span><\/li>\n<li><span>TCP\/IP<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>TCP\uff1a\u8fde\u63a5\/\u4f9d\u8d56\/\u57fa\u4e8e\u5b57\u8282\u6d41<\/span><\/li>\n<li><span>UDP:\u65e0\u8fde\u63a5\/\u4e0d\u53ef\u9760\/\u4e00\u7bc7\u62a5\u9053\u6587<\/span><\/li>\n<li><span>\u7b2c\u4e09\u6b21\u62db\u624b\u56db\u6b21\u6325\u624b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7b2c\u4e09\u6b21\u63e1\u624b(SYN\/SYN+ACK\/ACK)<\/span><\/li>\n<li><span>\u56db\u6b21\u6325\u624b(FIN\/ACK\/FIN\/ACK)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4e3a\u4ec0\u4e48\u8fde\u63a5\u7684\u65f6\u5019\u662f\u7b2c\u4e09\u6b21\u63e1\u624b\uff0c\u5173\u95ed\u7684\u65f6\u5019\u662f\u56db\u6b21\u63e1\u624b\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u56e0\u4e3a\u5f53Server\u7aef\u5ba2\u6237\u7aef\u7684SYN\u8fde\u63a5\u8bf7\u6c42\u62a5\u6587\u540e\uff0c\u53ef\u4ee5\u76f4\u63a5\u53d1\u9001SYN+ACK\u62a5\u6587\u3002\u5176\u4e2dACK\u62a5\u6587\u662f\u6536\u5230\u6536\u5230\u7684\uff0cSYN\u62a5\u6587\u662f\u540c\u6b65\u7684\u3002\u4f46\u662f\u5173\u95ed\u8fde\u63a5\u65f6\uff0c\u5f53Server\u7aef\u6536\u5230FIN\u62a5\u65f6\uff0c\u5f88\u53ef\u80fd\u5e76\u4e0d\u4f1a\u7acb\u5373\u5173\u95edSOCKET\uff0c\u6240\u4ee5\u53ea\u80fd\u5148\u56de\u590d\u4e00\u4e2aACK\u62a5\u6587\uff0c\u544a\u8bc9\u5ba2\u6237\u7aef\uff0c\u201c\u4f60\u53d1\u7684FIN\u62a5\u6587\u6211\u6536\u5230\u4e86\u201d\u3002\u53ea\u6709\u7b49\u6211\u670d\u52a1\u5668\u7aef\u6240\u6709\u7684\u62a5\u6587\u90fd\u53d1\u9001\u5b8c\u6bd5\uff0c\u6211\u4e0d\u80fd\u53d1\u9001\u6587\u62a5\uff0c\u56e0\u6b64\u4e0d\u80fd\u4e00\u8d77\u53d1\u9001\u3002\u6240\u4ee5\u9700\u8981\u56db\u6b65\u62db\u547c\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4e3a\u4ec0\u4e48TIME_WAIT\u72b6\u6001\u9700\u8981\u7ecf\u8fc72MSL\uff08\u6700\u5927\u62a5\u6587\u6bb5\u751f\u5b58\u65f6\u95f4\uff09\u624d\u80fd\u8fd4\u56de\u5230CLOSE\u72b6\u6001\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u65e2\u7136\u6309\u4e86\u5faa\u89c4\u8e48\u77e9\uff0c\u56db\u62a5\u6587\u90fd\u5df2\u7ecf\u53d1\u9001\u5b8c\u6bd5\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u8fdb\u5165\u5173\u95ed\u72b6\u6001\u4e86\uff0c\u4f46\u662f\u6211\u4eec\u5fc5\u987b\u8981\u8fdb\u5165\u8c61\u7f51\u662f\u4e0d\u53ef\u9760\u7684\uff0c\u6709\u53ef\u80fd\u6700\u540e\u4e00\u6b21\u9057\u5931\u3002\u6587\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span>XSS\/CSRF<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>HttpOnly\u7981\u6b62js\u811a\u672c\u8bbf\u95ee\u548c\u64cd\u4f5cCookie\uff0c\u53ef\u4ee5\u6709\u6548\u9632\u6b62XSS<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong><span>mysql<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6539\u8fdb\u65b9\u6cd5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7ebf\u6027\u7ed3\u6784-&gt;\u4e8c\u5206\u67e5\u627e-&gt;hash-&gt;\u4e8c\u53c9\u67e5\u627e\u6811-&gt;\u5e73\u8861\u4e8c\u53c9\u6811-&gt;\u591a\u8def\u67e5\u627e\u6811-&gt;\u591a\u8def\u5e73\u8861\u67e5\u627e\u6811(B-Tree)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>Mysql\u9762\u8bd5\u603b\u7ed3\u57fa\u7840\u7bc7<\/span>\n<p><span>https:\/\/segmentfault.com\/a\/1190000018371218<\/span><\/li>\n<li><span>Mysql\u9762\u8bd5\u603b\u7ed3\u8fdb\u9636\u7bc7<\/span>\n<p><span>https:\/\/segmentfault.com\/a\/1190000018380324<\/span><\/li>\n<li><span>\u6df1\u5165\u6d45\u51faMysql<\/span>\n<p><span>http:\/\/ningning.today\/2017\/02\/13\/database\/\u6df1\u5165\u6d45\u51famysql\/<\/span><\/li>\n<li><span>\u6e05\u7a7a\u6574\u4e2a\u8868\u65f6\uff0cInnoDB \u662f\u4e00\u884c\u4e00\u884c\u7684\u5220\u9664\uff0c\u800cMyISAM \u89c4\u8303\u4ece\u65b0\u5220\u9664\u5efa\u8868<\/span><\/li>\n<li><span>text\/blob \u6570\u636e\u7c7b\u578b\u4e0d\u80fd\u6709\u9ed8\u8ba4\u503c\uff0c\u65f6\u4e0d\u5b58\u5728\u5927\u5c0f\u5199\u8f6c\u6362<\/span><\/li>\n<li><span>\u4ec0\u4e48\u65f6\u5019\u5931\u6548<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4ee5%\u5f00\u5934\u7684\u559c\u6b22\u6a21\u7cca\u67e5\u8be2<\/span><\/li>\n<li><span>\u51fa\u73b0\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362<\/span><\/li>\n<li><span>\u6ca1\u6709\u6ee1\u8db3\u6700\u5de6\u8fb9\u7684\u539f\u5219<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5bf9\u4e8e\u591a\u5217\u7d22\u5f15\uff0c\u4e0d\u662f\u4f7f\u7528\u7684\u7b2c\u4e00\u90e8\u5206\uff0c\u5219\u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5931\u6548\u573a\u666f\uff1a<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5e94\u5c3d\u91cf\u907f\u514d\u5728\u5b50\u53e5\u4e2d\u4f7f\u7528!=\u6216&lt;&gt;\u64cd\u4f5c\u7b26\uff0c\u5426\u5219\u5f15\u64ce\u5c06\u8131\u79bb\u4f7f\u7528\u7d22\u5f15\u800c\u8fdb\u884c\u5168\u8868\u626b\u63cf<\/span><\/li>\n<li><span>\u5c3d\u91cf\u907f\u514d\u5728\u5b50\u53e5\u4e2d\u4f7f\u7528\u6216\u6765\u8fde\u63a5\u6761\u4ef6\u7684\u5730\u65b9\uff0c\u5426\u5219\u5c06\u5bfc\u81f4\u5f15\u64ce\u653e\u5f03\u4f7f\u7528\u7d22\u5f15\u800c\u8fdb\u884c\u5168\u8868\u626b\u63cf\uff0c\u5373\u4f7f\u6709\u6761\u4ef6\u5e26\u7d22\u5f15\u4e5f\u4e0d\u4f1a\u4f7f\u7528\uff0c\u4e5f\u662f\u4e3a\u4e86\u51cf\u5c11\u6216\u8fd9\u7684\u539f\u56e0<\/span><\/li>\n<li><span>\u5982\u679c\u4e00\u5217\u7c7b\u578b\u662f\u5b57\u7b26\u4e32\uff0c\u90a3\u4e00\u5b9a\u8981\u5728\u6761\u4ef6\u4e2d\u5c06\u6570\u636e\u5f15\u7528\u8d77\u6765\uff0c\u5426\u5219\u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15<\/span><\/li>\n<li><span>\u5e94\u5c3d\u91cf\u907f\u514d\u5728\u5b50\u53e5\u4e2d\u5bf9\u5b57\u6bb5\u8fdb\u884c\u51fd\u6570\u64cd\u4f5c\uff0c\u8fd9\u5c06\u5bfc\u81f4\u5f15\u64ce\u8131\u79bb\u4f7f\u7528\u800c\u8fdb\u884c\u5168\u8868\u626b\u63cf<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>\u4f8b\u5982\uff1a<\/span><br \/>\n<span>select<\/span><span> id <\/span><span>from<\/span><span> t <\/span><span>where <\/span> <span>substring<\/span><span> (name, <\/span><span>1<\/span><span> , <\/span><span>3<\/span><span> ) = <\/span><span>&#8216;abc&#8217;<\/span><span> \u2013 name;<\/span><br \/>\n<span>\u4ee5abc\u5f00\u5934\u7684\uff0c\u5e94\u6539\u6210\uff1a<\/span><br \/>\n<span>select<\/span><span> id <\/span><span>from<\/span><span> t <\/span><span>where<\/span><span> name <\/span><span>like <\/span> <span>&#8216;<\/span><span> abc% <\/span><span>&#8216;<\/span><br \/>\n<span>\u4f8b\u5982\uff1a<\/span><br \/>\n<span>select<\/span><span> id <\/span><span>from<\/span><span> t <\/span><span>where <\/span> <span>datediff<\/span><span> ( <\/span><span>day<\/span><span> , createdate, <\/span><span>&#8216;2005-11-30&#8217;<\/span><span> ) = <\/span><span>0<\/span><span> \u2013 <\/span><span>&#8216;2005-11-30&#8217;<\/span><span> ;<\/span><br \/>\n<span>\u5e94\u6539\u4e3a\uff1a<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e0d\u8981\u5728\u5b50\u4e2d\u7684\u201c=\u201d\u7684\u5730\u65b9<\/span><\/li>\n<li><span>\u5e94\u5c3d\u91cf\u907f\u514d\u5728\u5b50\u53e5\u4e2d\u5bf9\u5b57\u6bb5\u8fdb\u884c\u8868\u8fbe\u5f0f\u64cd\u4f5c\uff0c\u8fd9\u5c06\u5bfc\u81f4\u53d1\u52a8\u673a\u8131\u79bb\u4f7f\u7528\u800c\u8fdb\u884c\u5168\u8868\u626b\u63cf<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span>\u5982\uff1a<\/span><br \/>\n<span>select<\/span><span> id <\/span><span>from<\/span><span> t <\/span><span>where<\/span><span> num\/ <\/span><span>2<\/span><span> = <\/span><span>100<\/span><br \/>\n<span>\u5e94\u6539\u4e3a\uff1a<\/span><br \/>\n<span>select<\/span><span> id <\/span><span>from<\/span><span> t <\/span><span>where<\/span><span> num = <\/span><span>100<\/span><span> * <\/span><span>2<\/span><span>\uff1b<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li style=\"list-style-type: none;\">\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e0d\u9002\u5408\u952e\u503c\u5177\u4f53\u5217\uff08\u91cd\u590d\u6570\u636e\u53ef\u80fd\u7684\u5217\uff09\u4f8b\u5982\uff1aset enum \u9002\u5408\uff08\u679a\u4e3e\u7c7b\u578b\uff08enum\uff09\u53ef\u4ee5\u6dfb\u52a0null\uff0c\u5e76\u4e14\u9ed8\u8ba4\u7684\u503c\u4f1a\u81ea\u52a8\u8fc7\u6ee4\u5206\u7ec4\u96c6\u5408\uff08set\uff09\u548c\u679a\u4e3e\uff09\u7c7b\u4f3c\uff0c\u4f46\u53ea\u80fd\u6dfb\u52a064\u4e2a\u503c\uff09<\/span><\/li>\n<li><span>\u5982\u679cMySQL\u4f30\u8ba1\u4f7f\u7528\u5168\u8868\u626b\u63cf\u4f7f\u7528\u7d22\u5f15\u5feb\uff0c\u5219\u4e0d\u4f7f\u7528\u7d22\u5f15<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span>\u4ec0\u4e48\u662f\u5730\u65b9<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>B+Tree \u53f6\u5b50\u8282\u70b9\u4fdd\u5b58\u7684\u662f\u6570\u636e\u8fd8\u662f\u8def\u5f84<\/span><\/li>\n<li><span>MyISAM \u7d22\u5f15\u548c\u6570\u636e\u5206\u79bb\uff0c\u4f7f\u7528\u975e\u96c6\u4e2d<\/span><\/li>\n<li><span>InnoDB\u6570\u636e\u6587\u4ef6\u5c31\u662f\u6587\u4ef6\uff0c\u4e3b\u952e\u7d22\u5f15\u5c31\u662f\u7d22\u5f15<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong><span>Redis\u547d\u4ee4\u603b\u7ed3<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u5feb\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u57fa\u4e8e\u5185\u5b58\uff0c\u7531C\u8bed\u8a00\u5199<\/span><\/li>\n<li><span>\u4f7f\u7528\u591a\u8defI\/O\u6089\u5c3c\u6a21\u578b\uff0c\u975e\u73b0\u573aIO<\/span><\/li>\n<li><span>\u4f7f\u7528\u5355\u7ebf\u7a0b\u7ebf\u7a0b\u95f4\u5207\u6362<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u56e0\u4e3aRedis\u662f\u57fa\u4e8e\u5185\u5b58\u7684\uff0cCPU\u6700\u6709\u53ef\u80fd\u662f\u5185\u5b58\u673a\u5668\u7684\u5927\u5c0f\u7f51\u7edc\u7f51\u7edc\u64cd\u4f5c\u3002\u4e86\uff08\u51fa\u73b0\u4e86\u5f88\u591a\u95ee\u9898\uff01\uff09\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6570\u636e\u7ed3\u6784\u7b80\u5355<\/span><\/li>\n<li><span>\u81ea\u5df1\u6784\u5efa\u4e86VM\u673a\u5236\uff0c\u51cf\u5c11\u8c03\u7528\u7cfb\u7edf\u51fd\u6570\u7684\u65f6\u95f4<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4f18\u52bf<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6027\u80fd\u9ad8 \u2013 Redis\u80fd\u8bfb\u7684\u901f\u5ea6\u662f110000\u6b21\/s,\u5199\u7684\u901f\u5ea6\u662f81000\u6b21\/s<\/span><\/li>\n<li><span>\u5927\u91cf\u7684\u6570\u636e\u7c7b\u578b<\/span><\/li>\n<li><span>\u539f\u5b50 \u2013 Redis \u7684\u6240\u6709\u64cd\u4f5c\u90fd\u662f\u539f\u5b50\u6027\u7684\uff0c\u540c\u65f6 Redis \u8fd8\u652f\u6301\u5bf9\u51e0\u4e2a\u64cd\u4f5c\u5168\u5e76\u540e\u7684\u539f\u5b50\u6027\u6267\u884c<\/span><\/li>\n<li><span>\u4e30\u5bcc\u7684\u7279\u6027 \u2013 Redis \u8fd8\u652f\u6301\u53d1\u5e03\/\u8ba2\u9605\uff08\u53d1\u5e03\/\u8ba2\u9605\uff09\u3001\u901a\u77e5\u3001\u5173\u952e\u66f4\u65b0\u7b49\u7b49\u7279\u6027<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u4ec0\u4e48\u662fredis\u4e8b\u52a1\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5c06\u6709\u4e00\u4e9b\u8bf7\u6c42\u5305\u88f9\uff0c\u6309\u987a\u5e8f\u6267\u884c\u4e00\u4e9b\u547d\u4ee4\u7684\u673a\u5236<\/span><\/li>\n<li><span>\u901a\u8fc7multi,exec,watch\u7b49\u547d\u4ee4\u5b9e\u73b0\u4e8b\u52a1\u529f\u80fd<\/span><\/li>\n<li><span>Python redis-py pipeline=conn.pipeline(transaction=True)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6301\u4e45\u5316\u65b9\u5f0f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>RDB(\u622a\u56fe)<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>save(\u540c\u6b65\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u6570\u636e)<\/span><\/li>\n<li><span>bgsave(\u5f02\u6b65\uff0c\u5173\u673a\u65f6\uff0c\u65e0AOF\u5219\u9ed8\u8ba4\u4f7f\u7528)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>AOF(\u8ffd\u52a0\u65e5\u5fd7)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u600e\u4e48\u5b9e\u73b0<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u63a8<\/span><\/li>\n<li><span>\u6d41\u884c\u97f3\u4e50<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b(Bitmaps,Hyperlogs, Range Discovery\u7b49\u4e0d\u5e38\u7528)<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>String(\u5b57\u7b26\u4e32): \u9065\u63a7\u5668<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5531\u6216sds(Simple Dynamic String)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5217\u8868\uff08\u5217\u8868\uff09\uff1a\u7528\u6237\u7684\u5173\u6ce8\uff0c\u7c89\u4e1d\u5217\u8868<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>ziplist\uff08\u8fde\u7eed\u5185\u5b58\u5757\uff0c\u5165\u53e3\u8282\u70b9\u9690\u533f\u6301\u7eed\u65f6\u95f4\u957f\u5ea6\u4fe1\u606f\u6216\u5b9e\u73b0\u94fe\u8868\u529f\u80fd\uff09<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u54c8\u5e0c(\u54c8\u5e0c)\uff1a<\/span><\/li>\n<li><span>Set(\u96c6\u5408)\uff1a\u7528\u6237\u7684\u5173\u6ce8\u8005<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u96c6\u5408\u6216\u54c8\u5e0c\u8868<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>Zset(\u987a\u5e8f\u96c6\u5408)\uff1a\u5b9e\u65f6\u4fe1\u606f\u6392\u884c\u699c<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>skiplist(\u8df3\u8dc3\u8868)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span>\u4e0eMemcached\u7684\u533a\u522b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>Memcached \u552f\u4e00\u5b58\u50a8\u5b57\u7b26\u4e32\u952e<\/span><\/li>\n<li><span>Memcached \u7528\u6237\u53ea\u80fd\u901a\u8fc7 APPEND \u7684\u65b9\u5f0f\u5c06\u6570\u636e\u6dfb\u52a0\u5230\u73b0\u6709\u7684\u5b57\u7b26\u4e32\u7684\u9690\u85cf\u5217\u8868\u4e2d\uff0c\u5c06\u8fd9\u4e2a\u5b57\u7b26\u4e32\u5f53\u505a\u5217\u8868\u6765\u4f7f\u7528\u3002\u4f46\u662f\u5728\u5220\u9664\u8fd9\u4e9b\u5143\u7d20\u7684\u65f6\u5019\uff0cMemcache \u5219\u91c7\u7528\u4e86\u901a\u8fc7\u9ed1\u5217\u8868\u7684\u65b9\u5f0f\u6765\u9690\u85cf\u5217\u8868\u91cc\u7684\u5143\u7d20\uff0c\u4ece\u800c\u907f\u514d\u4e86\u5bf9\u5143\u7d20\u7684\u8bfb\u53d6\u3001\u66f4\u65b0\u3001\u5220\u9664\u7b49\u64cd\u4f5c<\/span><\/li>\n<li><span>Redis \u548c\u7f13\u5b58\u90fd\u5c06\u6570\u636e\u5168\u90e8\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff0c\u90fd\u662f\u5185\u5b58\u6570\u636e\u5e93\u3002\u4e0d\u8fc7\u5185\u5b58\u7f13\u5b58\u7528\u4e8e\u7f13\u5b58\u5176\u4ed6\uff0c\u4f8b\u5982\u56fe\u7247\u89c6\u9891\u7b49\u7b49<\/span><\/li>\n<li><span>\u865a\u62df\u5185\u5b58\u2014\u2014\u5f53\u7269\u7406\u5185\u5b58\u7528\u5b8c\uff0c\u53ef\u4ee5\u5c06\u4e00\u4e9b\u6ca1\u6709\u65f6\u7684Redis\u7684\u4ef7\u503c\u4ea4\u6362\u5230\u78c1\u76d8<\/span><\/li>\n<li><span>\u5b58\u50a8\u6570\u636e\u5b89\u5168\u2014\u2014Memcached\u6302\u6389\u540e\uff0c\u6570\u636e\u6ca1\u4e86\uff1bRedis\u53ef\u4ee5\u968f\u65f6\u4fdd\u5b58\u5230\u78c1\u76d8\uff08\u6301\u4e45\u5316\uff09<\/span><\/li>\n<li><span>\u5e94\u7528\u573a\u666f\u4e0d\u4e00\u6837\uff1aRedis \u51fa\u6765\u4f5c\u4e3a NoSQL \u6570\u636e\u5e93\u4f7f\u7528\u5916\uff0c\u8fd8\u53ef\u4ee5\u505a\u6d88\u606f\u6570\u636e\u5e93\u3001\u6570\u636e\u67e5\u8be2\u548c\u6570\u636e\u7f13\u5b58\u7b49\uff1bMemcached \u9002\u5408\u4e8e\u67e5\u770b SQL \u8bed\u53e5\u3001\u6570\u636e\u96c6\u3001\u7528\u6237\u4e34\u65f6\u6027\u6570\u636e\u3001\u5ef6\u8fdf\u6570\u636e\u67e5\u8be2\u548c Session \u7b49<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>Redis\u5b9e\u73b0\u5e94\u7528\u9501<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4f7f\u7528setnx\u5b9e\u73b0\u52a0\u9501\uff0c\u540c\u65f6\u53ef\u4ee5\u901a\u8fc7expire\u8d85\u65f6\u65f6\u95f4<\/span><\/li>\n<li><span>\u9501\u7684\u503c\u53ef\u4ee5\u662f\u4e00\u4e2a\u968f\u673a\u7684uuid\u6216\u8005\u7279\u5b9a\u7684\u4e00\u79cd<\/span><\/li>\n<li><span>\u91ca\u653e\u9501\u7684\u65f6\u5019\uff0c\u901a\u8fc7uuid\u5224\u65ad\u662f\u5426\u662f\u8be5\u9501\uff0c\u662f\u5219\u6267\u884c\u5220\u9664\u91ca\u653e\u9501<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5e38\u89c1\u95ee\u9898<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7f13\u5b58\u96ea\u5d29<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4fee\u6539\u6570\u636e\u8fc7\u671f\uff0c\u5927\u91cf\u8bf7\u6c42\u8bbf\u95ee\u6570\u636e\u5e93<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u7f13\u5b58\u5237\u65b0<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u8bf7\u6c42\u8bbf\u95ee\u6570\u636e\u65f6\uff0c\u67e5\u8be2\u4e2d\u4e0d\u5b58\u5728\uff0c\u6570\u636e\u5e93\u4e2d\u4e5f\u4e0d\u5b58\u5728<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u7d27\u6025\u6ce8\u610f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u521d\u59cb\u5316\u9879\u76ee\uff0c\u5c06\u90e8\u5206\u5e38\u7528\u6570\u636e\u52a0\u5165\u5ba1\u6838<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6709\u66f4\u65b0<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6570\u636e\u66f4\u65b0\uff0c\u8fdb\u884c\u66f4\u65b0\u4fee\u6b63\u6570\u636e<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u53ca\u65f6\u964d\u7ea7<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5f53\u8bbf\u95ee\u91cf\u5267\u589e\u52a0\u3001\u670d\u52a1\u51fa\u73b0\u95ee\u9898\uff08\u5982\u54cd\u5e94\u65f6\u95f4\u7f13\u6162\u6216\u4e0d\u54cd\u5e94\uff09\u6216\u975e\u6838\u5fc3\u670d\u52a1\u5f71\u54cd\u5230\u6838\u5fc3\u6d41\u7a0b\u7684\u65f6\u95f4\uff0c\u4ecd\u7136\u9700\u8981\u4fdd\u8bc1\u670d\u52a1\u4ecd\u7136\u53ef\u7528\uff0c\u5373\u4f7f\u662f\u6709\u635f\u6570\u636e\u670d\u52a1\u3002\u8fdb\u884c\u81ea\u52a8\u964d\u7ea7\uff0c\u4e5f\u53ef\u4ee5\u914d\u7f6e\u5f00\u5173\u81ea\u52a8\u964d\u7ea7<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span>\u4e00\u81f4\u6027\u7b97\u6cd5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4f7f\u7528\u65f6\u95f4\u7684\u65f6\u5019\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u57fa\u4e8eredis\u5b9e\u73b0\u4e00\u4e2a\u5e94\u7528\u9501\uff0c\u8981\u6c42\u4e00\u4e2a\u8d85\u65f6\u7684\u53c2\u6570<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u8bbe\u7f6e<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u865a\u62df\u5185\u5b58<\/span><\/li>\n<li><span>\u5185\u5b58\u64e6<\/span><\/li>\n<\/ul>\n<p><strong><span>Linux<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>Unix \u60c5\u611f\/o \u6a21\u578b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u7535\u7ade<\/span><\/li>\n<li><span>\u975e\u5979io<\/span><\/li>\n<li><span>\u591a\u8def\u7f8e\u98df\uff08Python\u4e0b\u4f7f\u7528selectot\u5b9e\u73b0io\u591a\u8def\u7f8e\u98df\uff09<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u9009\u62e9<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5e76\u53d1\u4e0d\u9ad8\uff0c\u8fde\u63a5\u6570\u5f88\u6b63\u5e38\u7684\u60c5\u51b5\u4e0b<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u8f6e\u8be2<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6bd4\u9009\u62e9\u63d0\u9ad8\u7684\u4e0d\u591a<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6c11\u610f\u8c03\u67e5<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u9002\u7528\u4e8e\u8fde\u63a5\u6570\u91cf\u7684\u60c5\u51b5\uff0c\u4f46\u6d3b\u52a8\u94fe\u63a5\u6570\u5c11\u7684\u60c5\u51b5<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span>\u4fe1\u53f7\u706f<\/span><\/li>\n<li><span>\u5f02\u6b65io(Gevent\/Asyncio\u5b9e\u73b0\u5f02\u6b65)<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6bd4\u4eba\u66f4\u597d\u7684\u4f7f\u7528\u547d\u4ee4\u624b\u518c<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>tldr\uff1a\u4e00\u672c\u547d\u4ee4\u793a\u4f8b\u7684\u624b\u518c<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>kill -9\u548c-15\u7684\u533a\u522b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>-15\uff1a\u7a0b\u5e8f\u7acb\u5373\u505c\u6b62\/\u5f53\u7a0b\u5e8f\u91ca\u653e\u6240\u6709\u8d44\u6e90\u4e4b\u540e\u505c\u6b62\/\u7a0b\u5e8f\u53ef\u80fd\u7ee7\u7eed\u8fd0\u884c<\/span><\/li>\n<li><span>-9\uff1a\u7531\u4e8e-15\u7684\u672c\u8d28\u6027\uff0c\u6240\u4ee5\u76f4\u63a5\u4f7f\u7528-9\u7acb\u5373\u521b\u4f5c\u8fc7\u7a0b<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5206\u9875\u673a\u5236\uff08\u903b\u8f91\u5730\u5740\u548c\u7269\u7406\u5730\u5740\u7684\u5185\u5b58\u5206\u914d\u7ba1\u7406\u65b9\u6848\uff09\uff1a<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e3a\u4e86\u9ad8\u6548\u7ba1\u7406\u5185\u5b58\uff0c\u51cf\u5c11\u4e00\u70b9<\/span><\/li>\n<li><span>\u7a0b\u5e8f\u7684\u903b\u8f91\u5730\u5740\u5212\u5206\u4e3a\u56fa\u5b9a\u5927\u5c0f\u7684\u9875<\/span><\/li>\n<li><span>\u7269\u7406\u5730\u5740\u5212\u5206\u4e3a\u540c\u6837\u5927\u5c0f\u7684\u5e27<\/span><\/li>\n<li><span>\u901a\u8fc7\u9875\u8868\u5bf9\u5e94\u7684\u903b\u8f91\u5730\u5740\u548c\u7269\u7406\u5730\u5740<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u7ffb\u8bd1\u5bf9\u5e94<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4e3a\u4e86\u6ee1\u8db3\u4ee3\u7801\u7684\u4e00\u4e9b\u903b\u8f91\u9700\u6c42<\/span><\/li>\n<li><span>\u6570\u636e\u5171\u4eab\/\u6570\u636e\u4fdd\u62a4\/\u52a8\u6001\u94fe\u63a5<\/span><\/li>\n<li><span>\u82e5\u5e72\u6bb5\u5185\u90e8\u8fde\u7eed\u5206\u914d\uff0c\u6bb5\u548c\u6bb5\u4e4b\u95f4\u662f\u79bb\u6563\u5206\u914d\u7684<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u67e5\u770bcpu\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u6700\u4f73<\/span><\/li>\n<li><span>\u514d\u8d39\u67e5\u770b\u5185\u5b58\uff0c\u6392\u67e5\u5185\u5b58\u95ee\u9898<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong><span>\u8bbe\u8ba1\u6a21\u5f0f<\/span><\/strong><\/p>\n<p><strong><span>\u5355\u4f8b\u6a21\u5f0f<\/span><\/strong><\/p>\n<p><span>\uff03\u65b9\u5f0f\u4e00<\/span><br \/>\n<span>DEF<\/span> <span>\u5355<\/span><span>\uff08CLS\uff0c*\u6307\u5b9a\u53c2\u6570\u65f6\uff0c** kwargs\uff09 <\/span><span>\uff1a<\/span><br \/>\n<span> \u5b9e\u4f8b= {} <\/span><br \/>\n<span>DEF <\/span> <span>get_instance <\/span> <span>\uff08*\u6307\u5b9a\u53c2\u6570\u65f6\uff0c** kwargs\uff09 <\/span><span>\uff1a<\/span><br \/>\n<span>\u5982\u679c<\/span><span>CLS<\/span><span>\u672a<\/span> <span>\u5728<\/span><span>\u5b9e\u4f8b\uff1a<\/span><br \/>\n<span> \u5b9e\u4f8b[CLS] = CLS\uff08*\u6307\u5b9a\u53c2\u6570\u65f6\uff0c** kwargs ) <\/span><br \/>\n<span>return<\/span><span> instances[cls] <\/span><br \/>\n<span>return<\/span><span> get_instance <\/span><br \/>\n<span>@Single <\/span><br \/>\n<span>class <\/span> <span>B<\/span><span> : <\/span><br \/>\n<span>pass <\/span><br \/>\n<span># \u65b9\u5f0f<\/span><br \/>\n<span>\u4e8c\u7c7b<\/span> <span>Single<\/span><span> : <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> print( <\/span><span>&#8220;\u5355\u4f8b\u6a21\u5f0f\u5b9e\u73b0\u65b9\u5f0f\u4e8c\u3002\u3002\u3002&#8221;<\/span><span> ) <\/span><\/p>\n<p><span> single = Single() <\/span><br \/>\n<span>del<\/span><span> Single <\/span><span># \u6bcf\u6b21\u8c03\u7528single\u5c31\u53ef\u4ee5\u4e86<\/span><br \/>\n<span>#\u65b9\u5f0f\u4e09(\u6700\u5e38\u7528\u7684\u65b9\u5f0f) <\/span><br \/>\n<span>class <\/span> <span>Single<\/span><span> : <\/span><br \/>\n<span>def <\/span> <span>__new__ <\/span><span>(cls,*args,**kwargs)<\/span><span> : <\/span><br \/>\n<span>if <\/span> <span>not<\/span><span> hasattr(cls, <\/span><span>&#8216;_instance&#8217;<\/span><span> ): <\/span><br \/>\n<span> cls._instance = super( ).__new__(cls,*args,**kwargs)<\/span><br \/>\n<span>\u8fd4\u56de<\/span><span>cls._instance<\/span><\/p>\n<p><strong><span>\u5de5\u5382\u6a21\u5f0f<\/span><\/strong><\/p>\n<p><span>class <\/span> <span>Dog<\/span><span> : <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> print( <\/span><span>&#8220;Wang Wang Wang&#8221;<\/span><span> ) <\/span><br \/>\n<span>class <\/span> <span>Cat<\/span><span> : <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> print( <\/span><span>&#8220;Miao Miao Miao&#8221;<\/span><span> ) <\/span><\/p>\n<p><span>def <\/span> <span>fac <\/span><span>(animal)<\/span><span> : <\/span><br \/>\n<span>if<\/span><span> animal.lower() == <\/span><span>&#8220;dog &#8220;<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> Dog() <\/span><br \/>\n<span>if<\/span><span> animal.lower() == <\/span><span>&#8220;cat&#8221;<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> Cat() <\/span><br \/>\n<span> print( <\/span><span>&#8220;\u5bf9\u4e0d\u8d77\uff0c\u5fc5\u987b\u662f\uff1adog,cat&#8221;<\/span><span> )<\/span><\/p>\n<p><strong><span>\u6784\u9020\u6a21\u5f0f<\/span><\/strong><\/p>\n<p><span> class Computer: <\/span><br \/>\n<span> def __init__(self,serial_number): <\/span><br \/>\n<span> self.serial_number = serial_number <\/span><br \/>\n<span> self.memory = None <\/span><br \/>\n<span> self.hadd = None <\/span><br \/>\n<span> self.gpu = None <\/span><br \/>\n<span> def __str__(self): <\/span><br \/>\n<span> info = (f&#8217;Memory:{self.memoryGB}&#8217; , <\/span><br \/>\n<span> &#8216;Hard Disk:{self.hadd}GB&#8217;, <\/span><br \/>\n<span> &#8216;Graphics Card:{self.gpu}&#8217;) <\/span><br \/>\n<span> return &#8221;.join(info) <\/span><br \/>\n<span> class ComputerBuilder\uff1a<\/span><br \/>\n<span> def __init__(self): <\/span><br \/>\n<span> self.computer = Computer(&#8216;Jim1996&#8217; ) <\/span><br \/>\n<span> def configure_memory(self,amount): <\/span><br \/>\n<span> self.computer.memory = amount <\/span><br \/>\n<span> return self #\u4e3a\u4e86\u65b9\u4fbf\u94fe\u5f0f\u8c03\u7528<\/span><br \/>\n<span> def configure_hdd(self,amount): <\/span><br \/>\n<span> pass <\/span><br \/>\n<span> def configure_gpu(self,gpu_model): <\/span><br \/>\n<span> pass <\/span><br \/>\n<span> class HardwareEngineer: <\/span><br \/>\n<span> def __init__(self): <\/span><br \/>\n<span> self.builder = None <\/span><br \/>\n<span> def constructor_computer(self,memory,hdd,gpu) <\/span><br \/>\n<span> self.builder = ComputerBuilder() <\/span><br \/>\n<span> self.builder.configure_memory(memory).configure_hdd(hdd).configure_gpu(gpu) <\/span><br \/>\n<span> @property <\/span><br \/>\n<span> def computer(self): <\/span><br \/>\n<span> return self.builder.computer<\/span><\/p>\n<p><strong><span>\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u5185\u7f6e\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5<\/span><\/strong><\/p>\n<p><strong><span>python\u5b9e\u73b0\u5404\u79cd\u6570\u636e\u7ed3\u6784<\/span><\/strong><\/p>\n<p><strong><span>\u5feb\u901f\u6392\u5e8f<\/span><\/strong><\/p>\n<p><span>def <\/span> <span>quick_sort <\/span><span>(_list)<\/span><span> : <\/span><br \/>\n<span>if<\/span><span> len(_list) &lt;<\/span><span> 2<\/span><span> :<\/span><br \/>\n<span> return<\/span><span> _list<\/span><br \/>\n<span> pivot_index =<\/span><span> 0<\/span><br \/>\n<span> pivot = _list(pivot_index)<\/span><br \/>\n<span> left_list = [i<\/span><span> for<\/span><span> i<\/span><span> in<\/span><span> _list[:pivot_index]<\/span><span> if<\/span><span> i &lt; pivot]<\/span><br \/>\n<span> right_list = [i<\/span><span> for<\/span><span> i<\/span><span> in<\/span><span> _list [pivot_index:]<\/span><span> if<\/span><span> i &gt; pivot]<\/span><br \/>\n<span> return<\/span><span> quick_sort(left) + [pivot] + quick_sort(right)<\/span><\/p>\n<p><strong><span>\u9009\u62e9\u6392\u5e8f<\/span><\/strong><\/p>\n<p><span>def <\/span> <span>select_sort <\/span><span>(seq)<\/span><span> :<\/span><br \/>\n<span> n = len(seq)<\/span><br \/>\n<span> for<\/span><span> i<\/span><span> in<\/span><span> range(n-<\/span><span> 1<\/span><span> )<\/span><br \/>\n<span> min_idx = i<\/span><br \/>\n<span> for<\/span><span> j<\/span><span> in<\/span><span> range(i+<\/span><span> 1<\/span><span> ,n):<\/span><br \/>\n<span> if<\/span><span> seq[j] &lt; seq[min_inx]:<\/span><br \/>\n<span> min_idx = j<\/span><br \/>\n<span> if<\/span><span> min_idx != i:<\/span><br \/>\n<span> seq[i], seq[min_idx] = seq[min_idx],seq[i]<\/span><\/p>\n<p><strong><span>\u63d2\u5165\u6392\u5e8f<\/span><\/strong><\/p>\n<p><span>DEF <\/span> <span>insertion_sort <\/span><span>\uff08_list\uff09 <\/span><span>\uff1a<\/span><br \/>\n<span> N = LEN\uff08_list\uff09<\/span><br \/>\n<span>\u7528\u4e8e<\/span><span>\u6211<\/span><span>\u5728<\/span><span>\u8303\u56f4\uff08<\/span><span> 1<\/span><span>\uff0cN\uff09\uff1a<\/span><br \/>\n<span> \u503c= _list [I]<\/span><br \/>\n<span> POS = I<\/span><br \/>\n<span>\uff0c\u800c<\/span><span>POS&gt;<\/span><span> 0<\/span> <span>\u548c<\/span><span>\u503c&lt;_list [POS &#8211;<\/span><span> 1<\/span><span> ]<\/span><br \/>\n<span> _list [POS] = _list [pos &#8211;<\/span><span> 1<\/span><span> ]<\/span><br \/>\n<span> pos -=<\/span><span> 1<\/span><br \/>\n<span> _list[pos] = value<\/span><br \/>\n<span> print(sql)<\/span><\/p>\n<p><strong><span>\u5f52\u5e76\u6392\u5e8f<\/span><\/strong><\/p>\n<p><span>def <\/span> <span>merge_sorted_list <\/span><span>(_list1,_list2)<\/span><span> : <\/span> <span>#\u5408\u5e76<\/span><br \/>\n<span> \u6392\u5e8f\u5217\u8868len_a, len_b = len(_list1),len(_list2)<\/span><br \/>\n<span> a = b =<\/span><span> 0<\/span><br \/>\n<span> sort = []<\/span><br \/>\n<span> while<\/span><span> len_ &gt; a<\/span><span> and<\/span><span> len_b &gt; b:<\/span><br \/>\n<span> if<\/span><span> _list1[a] &gt; _list2[b]:<\/span><br \/>\n<span> sort.append(_list2[b])<\/span><br \/>\n<span> b +=<\/span><span> 1 <\/span><br \/>\n<span>else<\/span><span> :<\/span><br \/>\n<span> sort.append(_list1[a])<\/span><br \/>\n<span> a +=<\/span><span> 1 <\/span><br \/>\n<span>if<\/span><span> len_a &gt; a:<\/span><br \/>\n<span> sort.append(_list1[a:])<\/span><br \/>\n<span> if<\/span><span> len_b &gt; b:<\/span><br \/>\n<span> sort.append(_list2[b:])<\/span><br \/>\n<span> return<\/span><span> sort<\/span><\/p>\n<p><span> def <\/span> <span>merge_sort<\/span><span>(_list)<\/span><span> : <\/span><br \/>\n<span>if<\/span><span> len(list1)&lt;<\/span><span> 2<\/span><span> :<\/span><br \/>\n<span> return<\/span><span> list1<\/span><br \/>\n<span> else<\/span><span> :<\/span><br \/>\n<span> mid = int(len(list1)\/<\/span><span> 2<\/span><span> )<\/span><br \/>\n<span> left = mergesort(list1[:mid])<\/span><br \/>\n<span> right = mergesort(list1[mid:])<\/span><br \/>\n<span> return<\/span><span> merge_sorted_list(\u5de6\u53f3\uff09<\/span><\/p>\n<p><strong><span>\u5806\u53e0\u6392\u5e8fheapq\u6a21\u5757<\/span><\/strong><\/p>\n<p><span>from<\/span><span> heapq <\/span><span>import<\/span><span> nsmallest <\/span><br \/>\n<span>def <\/span> <span>heap_sort <\/span><span>(_list)<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> nsmallest(len(_list),_list)<\/span><\/p>\n<p><strong><span>\u6808<\/span><\/strong><\/p>\n<p><span>from<\/span><span> collections <\/span><span>import<\/span><span> deque <\/span><br \/>\n<span>class <\/span> <span>Stack<\/span><span> : <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> self.s = deque() <\/span><br \/>\n<span>def <\/span> <span>peek <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> p = self.pop() <\/span><br \/>\n<span> self.push(p) <\/span><br \/>\n<span>return<\/span><span> p <\/span><br \/>\n<span>def <\/span> <span>push <\/span><span>(self, el)<\/span><span> :<\/span><br \/>\n<span> self .s.append(el) <\/span><br \/>\n<span>def <\/span> <span>pop <\/span><span>(self)<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> self.pop()<\/span><\/p>\n<p><strong><span>\u96f7<\/span><\/strong><\/p>\n<p><span>from<\/span><span> collections <\/span><span>import<\/span><span> deque <\/span><br \/>\n<span>class <\/span> <span>Queue<\/span><span> : <\/span><br \/>\n<span>def <\/span> <span>__init__ <\/span><span>(self)<\/span><span> :<\/span><br \/>\n<span> self.s = deque() <\/span><br \/>\n<span>def <\/span> <span>push <\/span><span>(self, el)<\/span><span> :<\/span><br \/>\n<span> self.s.append(el) <\/span><br \/>\n<span>def <\/span> <span>pop <\/span><span>(self)<\/span><span> : <\/span><br \/>\n<span>return<\/span><span> self.popleft()<\/span><\/p>\n<p><strong><span>\u4e8c\u5206\u67e5\u627e<\/span><\/strong><\/p>\n<p><span>def <\/span> <span>binary_search <\/span><span>(_list,num)<\/span><span> :<\/span><br \/>\n<span> mid = len(_list)\/\/<\/span><span> 2 <\/span><br \/>\n<span>if<\/span><span> len(_list) &lt;<\/span><span> 1<\/span><span> :<\/span><br \/>\n<span> return<\/span><span> Flase<\/span><br \/>\n<span> if<\/span><span> num &gt; _list[mid]:<\/span><br \/>\n<span> BinarySearch(_list[mid:],num)<\/span><br \/>\n<span> elif<\/span><span> num &lt; _list[ mid]:<\/span><br \/>\n<span> BinarySearch(_list[:mid],num)<\/span><br \/>\n<span> else<\/span><span> :<\/span><br \/>\n<span> return<\/span><span> _list.index(num)<\/span><\/p>\n<p><strong><span>\u9762\u8bd5\u9898\uff1a<\/span><\/strong><\/p>\n<p><span>\u5173\u4e8e\u6570\u636e\u5e93\u4f18\u5316\u53ca\u8bbe\u8ba1<\/span><\/p>\n<p><span>https:\/\/segmentfault.com\/a\/1190000018426586<\/span><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5982\u4f55\u4f7f\u7528\u4e24\u4e2a\u6808\u5b9e\u73b0\u4e00\u4e2a\u65b9\u6cd5<\/span><\/li>\n<li><span>\u8054\u94fe\u8868<\/span><\/li>\n<li><span>\u5408\u5e76\u4e24\u4e2a\u94fe\u8868<\/span><\/li>\n<li><span>\u5220\u9664\u94fe\u8868\u8282\u70b9<\/span><\/li>\n<li><span>\u4f3c\u4e8c\u53c9\u6811<\/span><\/li>\n<li><span>\u8bbe\u8ba1\u77ed\u7f51\u5740\u670d\u52a1\uff1f62\u79cd\u65b9\u5f0f\u5b9e\u73b0<\/span><\/li>\n<li><span>\u8bbe\u8ba1\u4e00\u4e2a\u79d2\u6740\u7cfb\u7edf(feed\u6d41)\uff1f<\/span>\n<p><span>https:\/\/www.jianshu.com\/p\/ea0259d109f9<\/span><\/li>\n<li><span>\u4e3a\u4ec0\u4e48mysql\u6570\u636e\u5e93\u7684\u952e\u4f7f\u7528\u81ea\u589e\u7684\u80fd\u6bd4\u8f83\u597d\uff1f\u4f7f\u7528uuid\u53ef\u4ee5\u5417\uff1f\u4e3a\u4ec0\u4e48\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u5982\u679c InnoDB \u7684\u6570\u636e\u5199\u5165\u987a\u5e8f\u80fd\u548c B+\u6811\u7d22\u5f15\u7684\u8d77\u59cb\u8282\u70b9\u987a\u5e8f\u4e00\u81f4\u7684\u8bdd\uff0c\u8fd9\u65f6\u5019\u8868\u8bbf\u95ee\u541e\u5410\u91cf\u662f\u6700\u9ad8\u7684\u3002\u4e3a\u4e86\u5b58\u50a8\u548c\u6027\u80fd\u5e94\u8be5\u4f7f\u7528\u81ea\u589e\u957f ID \u505a\u4e3b\u67e5\u8be2\u3002<\/span><\/li>\n<li><span>\u5bf9\u4e8eInnoDB\u7684\u4e3b\u7d22\u5f15\uff0c\u6570\u636e\u4f1a\u6309\u7167\u4e3b\u952e\u8fdb\u884c\u81ea\u6392\u5e8f\uff0c\u56e0\u4e3aUUID\u7684\u65e0\u6027\uff0cInnoDB\u4f1a\u4ea7\u751f\u4ea7\u751f\u7684IO\u538b\u529b\uff0c\u4e0d\u9002\u5408\u4f7f\u7528UUID\u505a\u7269\u7406\u4e3b\u952e\uff0c\u53ef\u4ee5\u628a\u5b83\u5f53\u4f5c\u903b\u8f91\u4e3b\u952e\uff0c\u7269\u7406\u4e3b\u952e\u4ecd\u7136\u4f7f\u7528\u589eID\u3002\u4e3a\u4e86\u5176\u4ed6\u7684\u552f\u4e00\u6027\uff0c\u5e94\u8be5\u7528uuid\u505a\u7d22\u5f15\u5173\u8054\u5176\u4ed6\u8868\u6216\u505a\u5916\u952e<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5982\u679c\u662f\u6c11\u95f4\u7cfb\u7edf\u4e0b\u6211\u4eec\u600e\u4e48\u751f\u6210\u6570\u636e\u5e93\u7684\u81ea\u589eid\u5462\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4f7f\u7528redis<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u57fa\u4e8eredis\u5b9e\u73b0\u4e00\u4e2a\u5e94\u7528\u9501\uff0c\u8981\u6c42\u4e00\u4e2a\u8d85\u65f6\u7684\u53c2\u6570<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u8bbe\u7f6e<\/span><\/li>\n<li><span>setnx + \u8fc7\u671f<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5982\u679credis\u4e2a\u522b\u5904\u7406\u4e8b\u4ef6\u53d1\u751f\u4e86\uff0c\u5982\u4f55\uff1f\u8fd8\u6709\u5176\u4ed6\u7684\u89e3\u51b3\u65b9\u6848\u5b9e\u73b0\u4e86\u9501\u7801\uff1f<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4f7f\u7528hash\u534f\u8bae<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong><span>\u5373\u65f6\u7b97\u6cd5<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>LRU(least-recent-used):\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u5bf9\u8c61<\/span><\/li>\n<li><span>LFU\uff08Least \u7ecf\u5e38\u4f7f\u7528\uff09\uff1a\u6700\u4e0d\u7ecf\u5e38\u4f7f\u7528\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u6570\u636e\u5728\u8fd1\u671f\u5185\u4f7f\u7528\u6b21\u6570\u5f88\u5c11\uff0c\u90a3\u4e48\u5728\u4ee5\u540e\u53ef\u80fd\u5185\u88ab\u4f7f\u7528\u7684\u95ee\u9898\u4e5f\u80fd\u4fdd\u8bc1<\/span><\/li>\n<\/ul>\n<p><strong><span>\u670d\u52a1\u7aef\u6027\u80fd\u4f18\u5316\u65b9\u5411<\/span><\/strong><\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4f7f\u7528\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5<\/span><\/li>\n<li><span>\u6570\u636e\u5e93<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u4f18\u5316\u4f18\u5316<\/span><\/li>\n<li><span>\u6162\u67e5\u8be2\u5220\u9664<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>slow_query_log_file\u5f00\u542f\u5e76\u4e14\u67e5\u8be2\u6162\u67e5\u8be2\u65e5\u5fd7<\/span><\/li>\n<li><span>\u901a\u8fc7\u89e3\u91ca\u6392\u67e5\u7d22\u5f15\u95ee\u9898<\/span><\/li>\n<li><span>\u8c03\u6574\u6570\u636e\u4fee\u6539\u7d22\u5f15<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u64cd\u4f5c\uff0c\u4ece\u800c\u51cf\u5c11\u64cd\u4f5c<\/span><\/li>\n<li><span>\u4f7f\u7528NoSQL\uff1a\u4f8b\u5982Redis<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u7f51\u7edc<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>\u793a\u8303\u64cd\u4f5c<\/span><\/li>\n<li><span>\u7ba1\u9053<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u6b64\u523b<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>Redis<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>\u5f02\u6b65<\/span>\n<ul class=\"list-paddingleft-2\">\n<li><span>Asyncio 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c-198 -44 -350 -190 -395 -379 -18 -76 -8 -221 19 -290 114 -284 457 -406 731 -260 98 52 188 154 231 260 27 69 37 214 19 290 -38 163 -166 304 -326 360 -67 23 -215 33 -279 19z\"\/><\/g><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/aif.amtbbs.org\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u662f\u6765\u81ea SegmentFault \u4e0a\u7684\u5f00\u53d1\u8005@\u4e8c\u5341\u4e00\u603b\u7ed3\u7684 Python \u91cd\u70b9\u3002\u7531\u4e8e\u603b\u7ed3\u4e86\u5f88\u591a\u4e1c\u897f\uff0c\u6240\u4ee5\u7bc7\u5e45\u6709 [&hellip;]<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_1611\" class=\"pvc_stats total_only  \" data-element-id=\"1611\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" version=\"1.0\" viewBox=\"0 0 502 315\" preserveAspectRatio=\"xMidYMid meet\"><g transform=\"translate(0,332) scale(0.1,-0.1)\" fill=\"\" stroke=\"none\"><path d=\"M2394 3279 l-29 -30 -3 -207 c-2 -182 0 -211 15 -242 39 -76 157 -76 196 0 15 31 17 60 15 243 l-3 209 -33 29 c-26 23 -41 29 -80 29 -41 0 -53 -5 -78 -31z\"\/><path d=\"M3085 3251 c-45 -19 -58 -50 -96 -229 -47 -217 -49 -260 -13 -295 52 -53 146 -42 177 20 16 31 87 366 87 410 0 70 -86 122 -155 94z\"\/><path d=\"M1751 3234 c-13 -9 -29 -31 -37 -50 -12 -29 -10 -49 21 -204 19 -94 39 -189 45 -210 14 -50 54 -80 110 -80 34 0 48 6 76 34 21 21 34 44 34 59 0 14 -18 113 -40 219 -37 178 -43 195 -70 221 -36 32 -101 37 -139 11z\"\/><path d=\"M1163 3073 c-36 -7 -73 -59 -73 -102 0 -56 133 -378 171 -413 34 -32 83 -37 129 -13 70 36 67 87 -16 290 -86 209 -89 214 -129 231 -35 14 -42 15 -82 7z\"\/><path d=\"M3689 3066 c-15 -9 -33 -30 -42 -48 -48 -103 -147 -355 -147 -375 0 -98 131 -148 192 -74 13 15 57 108 97 206 80 196 84 226 37 273 -30 30 -99 39 -137 18z\"\/><path d=\"M583 2784 c-38 -19 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class=\"pvc_clear\"><\/div>\n","protected":false},"author":1,"featured_media":1612,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/posts\/1611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/comments?post=1611"}],"version-history":[{"count":1,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/posts\/1611\/revisions"}],"predecessor-version":[{"id":1613,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/posts\/1611\/revisions\/1613"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/media\/1612"}],"wp:attachment":[{"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/media?parent=1611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/categories?post=1611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aif.amtbbs.org\/index.php\/wp-json\/wp\/v2\/tags?post=1611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}