{"id":14534,"date":"2023-03-05T22:33:06","date_gmt":"2023-03-05T14:33:06","guid":{"rendered":"http:\/\/139.9.1.231\/?p=14534"},"modified":"2025-07-03T09:50:52","modified_gmt":"2025-07-03T01:50:52","slug":"python-multiprocessing-and-multithreading","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2023\/03\/05\/python-multiprocessing-and-multithreading\/","title":{"rendered":"PYTHON &#8212; \u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b"},"content":{"rendered":"\n<h4 id=\"%E8%BF%9B%E7%A8%8B%E4%B8%8E%E7%BA%BF%E7%A8%8B%E7%9A%84%E6%A6%82%E5%BF%B5%EF%BC%8C%E4%BB%A5%E5%8F%8A%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E6%9C%89%E8%BF%9B%E7%A8%8B%E7%BA%BF%E7%A8%8B%EF%BC%8C%E5%85%B6%E4%B8%AD%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%8C%E4%BB%96%E4%BB%AC%E5%90%84%E8%87%AA%E5%8F%88%E6%98%AF%E6%80%8E%E4%B9%88%E5%90%8C%E6%AD%A5%E7%9A%84?\">        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rel=\"noreferrer noopener\" href=\"https:\/\/zh.wikipedia.org\/wiki\/%E4%BA%92%E6%96%A5%E9%94%81\" target=\"_blank\">&#8220;\u4e92\u65a5\u9501&#8221;<\/a>\uff08Mutual exclusion\uff0c\u7f29\u5199 Mutex\uff09\uff0c\u9632\u6b62\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bfb\u5199\u67d0\u4e00\u5757\u5185\u5b58\u533a\u57df\u3002<\/p>\n\n\n\n<p>\u8fd8\u6709\u4e9b\u623f\u95f4\uff0c\u53ef\u4ee5\u540c\u65f6\u5bb9\u7eb3n\u4e2a\u4eba\uff0c\u6bd4\u5982\u53a8\u623f\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u4eba\u6570\u5927\u4e8en\uff0c\u591a\u51fa\u6765\u7684\u4eba\u53ea\u80fd\u5728\u5916\u9762\u7b49\u7740\u3002\u8fd9\u597d\u6bd4\u67d0\u4e9b\u5185\u5b58\u533a\u57df\uff0c\u53ea\u80fd\u4f9b\u7ed9\u56fa\u5b9a\u6570\u76ee\u7684\u7ebf\u7a0b\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>\u8fd9\u65f6\u7684\u89e3\u51b3\u65b9\u6cd5\uff0c\u5c31\u662f\u5728\u95e8\u53e3\u6302n\u628a\u94a5\u5319\u3002\u8fdb\u53bb\u7684\u4eba\u5c31\u53d6\u4e00\u628a\u94a5\u5319\uff0c\u51fa\u6765\u65f6\u518d\u628a\u94a5\u5319\u6302\u56de\u539f\u5904\u3002\u540e\u5230\u7684\u4eba\u53d1\u73b0\u94a5\u5319\u67b6\u7a7a\u4e86\uff0c\u5c31\u77e5\u9053\u5fc5\u987b\u5728\u95e8\u53e3\u6392\u961f\u7b49\u7740\u4e86\u3002\u8fd9\u79cd\u505a\u6cd5\u53eb\u505a<a href=\"https:\/\/en.wikipedia.org\/wiki\/Semaphore_(programming)\" target=\"_blank\" rel=\"noreferrer noopener\">&#8220;\u4fe1\u53f7\u91cf&#8221;<\/a>\uff08Semaphore\uff09\uff0c\u7528\u6765\u4fdd\u8bc1\u591a\u4e2a\u7ebf\u7a0b\u4e0d\u4f1a\u4e92\u76f8\u51b2\u7a81\u3002<\/p>\n\n\n\n<p>\u4e0d\u96be\u770b\u51fa\uff0cmutex\u662fsemaphore\u7684\u4e00\u79cd\u7279\u6b8a\u60c5\u51b5\uff08n=1\u65f6\uff09\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b8c\u5168\u53ef\u4ee5\u7528\u540e\u8005\u66ff\u4ee3\u524d\u8005\u3002\u4f46\u662f\uff0c\u56e0\u4e3amutex\u8f83\u4e3a\u7b80\u5355\uff0c\u4e14\u6548\u7387\u9ad8\uff0c\u6240\u4ee5\u5728\u5fc5\u987b\u4fdd\u8bc1\u8d44\u6e90\u72ec\u5360\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd8\u662f\u91c7\u7528\u8fd9\u79cd\u8bbe\u8ba1\u3002<\/p>\n\n\n\n<p>\u64cd\u4f5c\u7cfb\u7edf\u7684\u8bbe\u8ba1\uff0c\u56e0\u6b64\u53ef\u4ee5\u5f52\u7ed3\u4e3a\u4e09\u70b9\uff1a<\/p>\n\n\n\n<p>\uff081\uff09\u4ee5\u591a\u8fdb\u7a0b\u5f62\u5f0f\uff0c\u5141\u8bb8\u591a\u4e2a\u4efb\u52a1\u540c\u65f6\u8fd0\u884c\uff1b<\/p>\n\n\n\n<p>\uff082\uff09\u4ee5\u591a\u7ebf\u7a0b\u5f62\u5f0f\uff0c\u5141\u8bb8\u5355\u4e2a\u4efb\u52a1\u5206\u6210\u4e0d\u540c\u7684\u90e8\u5206\u8fd0\u884c\uff1b<\/p>\n\n\n\n<p>\uff083\uff09\u63d0\u4f9b\u534f\u8c03\u673a\u5236\uff0c\u4e00\u65b9\u9762\u9632\u6b62\u8fdb\u7a0b\u4e4b\u95f4\u548c\u7ebf\u7a0b\u4e4b\u95f4\u4ea7\u751f\u51b2\u7a81\uff0c\u53e6\u4e00\u65b9\u9762\u5141\u8bb8\u8fdb\u7a0b\u4e4b\u95f4\u548c\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\u8d44\u6e90\u3002<\/p>\n\n\n\n<h4 class=\"has-light-blue-background-color has-background\">Python\u4e2d\u7684\u8fdb\u7a0b\u548c\u7ebf\u7a0b\uff1a<\/h4>\n\n\n\n<p>       python\u4e2d\u7684\u7684multiprocess\u548cthreading\u6a21\u5757\u7528\u4e8e\u8fdb\u884c\u591a\u7ebf\u7a0b\u548c\u591a\u8fdb\u7a0b\u7f16\u7a0b\u3002<\/p>\n\n\n\n<p><strong>Python\u7684\u591a\u8fdb\u7a0b\u7f16\u7a0b\u4e0emultiprocess\u6a21\u5757<\/strong><\/p>\n\n\n\n<p>python\u7684\u591a\u8fdb\u7a0b\u7f16\u7a0b\u4e3b\u8981\u4f9d\u9760multiprocess\u6a21\u5757\u3002\u6211\u4eec\u5148\u5bf9\u6bd4\u4e24\u6bb5\u4ee3\u7801\uff0c\u770b\u770b\u591a\u8fdb\u7a0b\u7f16\u7a0b\u7684\u4f18\u52bf\u3002\u6211\u4eec\u6a21\u62df\u4e86\u4e00\u4e2a\u975e\u5e38\u8017\u65f6\u7684\u4efb\u52a1\uff0c\u8ba1\u7b978\u768420\u6b21\u65b9\uff0c\u4e3a\u4e86\u4f7f\u8fd9\u4e2a\u4efb\u52a1\u663e\u5f97\u66f4\u8017\u65f6\uff0c\u6211\u4eec\u8fd8\u8ba9\u5b83sleep 2\u79d2\u3002\u7b2c\u4e00\u6bb5\u4ee3\u7801\u662f\u5355\u8fdb\u7a0b\u8ba1\u7b97(\u4ee3\u7801\u5982\u4e0b\u6240\u793a)\uff0c\u6211\u4eec\u6309\u987a\u5e8f\u6267\u884c\u4ee3\u7801\uff0c\u91cd\u590d\u8ba1\u7b972\u6b21\uff0c\u5e76\u6253\u5370\u51fa\u603b\u5171\u8017\u65f6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import time\nimport os\n\ndef long_time_task():\n    print('\u5f53\u524d\u8fdb\u7a0b: {}'.format(os.getpid()))\n    time.sleep(2)\n    print(\"\u7ed3\u679c: {}\".format(8 ** 20))\n\nif __name__ == \"__main__\":\n    print('\u5f53\u524d\u6bcd\u8fdb\u7a0b: {}'.format(os.getpid()))\n    start = time.time()\n    for i in range(2):\n        long_time_task()\n\n    end = time.time()\n    print(\"\u7528\u65f6{}\u79d2\".format((end-start)))<\/code><\/pre>\n\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\uff0c\u603b\u5171\u8017\u65f64\u79d2\uff0c\u81f3\u59cb\u81f3\u7ec8\u53ea\u6709\u4e00\u4e2a\u8fdb\u7a0b14236\u3002\u770b\u6765\u7535\u8111\u8ba1\u7b978\u768420\u6b21\u65b9\u57fa\u672c\u4e0d\u8d39\u65f6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5f53\u524d\u6bcd\u8fdb\u7a0b: 14236\n\u5f53\u524d\u8fdb\u7a0b: 14236\n\u7ed3\u679c: 1152921504606846976\n\u5f53\u524d\u8fdb\u7a0b: 14236\n\u7ed3\u679c: 1152921504606846976\n\u7528\u65f64.01080060005188\u79d2<\/code><\/pre>\n\n\n\n<p>\u7b2c2\u6bb5\u4ee3\u7801\u662f\u591a\u8fdb\u7a0b\u8ba1\u7b97\u4ee3\u7801\u3002\u6211\u4eec\u5229\u7528multiprocess\u6a21\u5757\u7684Process\u65b9\u6cd5\u521b\u5efa\u4e86\u4e24\u4e2a\u65b0\u7684\u8fdb\u7a0bp1\u548cp2\u6765\u8fdb\u884c\u5e76\u884c\u8ba1\u7b97\u3002Process\u65b9\u6cd5\u63a5\u6536\u4e24\u4e2a\u53c2\u6570, \u7b2c\u4e00\u4e2a\u662ftarget\uff0c\u4e00\u822c\u6307\u5411\u51fd\u6570\u540d\uff0c\u7b2c\u4e8c\u4e2a\u65f6args\uff0c\u9700\u8981\u5411\u51fd\u6570\u4f20\u9012\u7684\u53c2\u6570\u3002\u5bf9\u4e8e\u521b\u5efa\u7684\u65b0\u8fdb\u7a0b\uff0c\u8c03\u7528start()\u65b9\u6cd5\u5373\u53ef\u8ba9\u5176\u5f00\u59cb\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528os.getpid()\u6253\u5370\u51fa\u5f53\u524d\u8fdb\u7a0b\u7684\u540d\u5b57\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from multiprocessing import Process\nimport os\nimport time\n\n\ndef long_time_task(i):\n    print('\u5b50\u8fdb\u7a0b: {} - \u4efb\u52a1{}'.format(os.getpid(), i))\n    time.sleep(2)\n    print(\"\u7ed3\u679c: {}\".format(8 ** 20))\n\n\nif __name__=='__main__':\n    print('\u5f53\u524d\u6bcd\u8fdb\u7a0b: {}'.format(os.getpid()))\n    start = time.time()\n    p1 = Process(target=long_time_task, args=(1,))\n    p2 = Process(target=long_time_task, args=(2,))\n    print('\u7b49\u5f85\u6240\u6709\u5b50\u8fdb\u7a0b\u5b8c\u6210\u3002')\n    p1.start()\n    p2.start()\n    p1.join()\n    p2.join()\n    end = time.time()\n    print(\"\u603b\u5171\u7528\u65f6{}\u79d2\".format((end - start)))<\/code><\/pre>\n\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\u6240\u793a\uff0c\u8017\u65f6\u53d8\u4e3a2\u79d2\uff0c\u65f6\u95f4\u51cf\u4e86\u4e00\u534a\uff0c\u53ef\u89c1\u5e76\u53d1\u6267\u884c\u7684\u65f6\u95f4\u660e\u663e\u6bd4\u987a\u5e8f\u6267\u884c\u8981\u5feb\u5f88\u591a\u3002\u4f60\u8fd8\u53ef\u4ee5\u770b\u5230\u5c3d\u7ba1\u6211\u4eec\u53ea\u521b\u5efa\u4e86\u4e24\u4e2a\u8fdb\u7a0b\uff0c\u53ef\u5b9e\u9645\u8fd0\u884c\u4e2d\u5374\u5305\u542b\u91cc1\u4e2a\u6bcd\u8fdb\u7a0b\u548c2\u4e2a\u5b50\u8fdb\u7a0b\u3002\u4e4b\u6240\u4ee5\u6211\u4eec\u4f7f\u7528join()\u65b9\u6cd5\u5c31\u662f\u4e3a\u4e86\u8ba9\u6bcd\u8fdb\u7a0b\u963b\u585e\uff0c\u7b49\u5f85\u5b50\u8fdb\u7a0b\u90fd\u5b8c\u6210\u540e\u624d\u6253\u5370\u51fa\u603b\u5171\u8017\u65f6\uff0c\u5426\u5219\u8f93\u51fa\u65f6\u95f4\u53ea\u662f\u6bcd\u8fdb\u7a0b\u6267\u884c\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5f53\u524d\u6bcd\u8fdb\u7a0b: 6920\n\u7b49\u5f85\u6240\u6709\u5b50\u8fdb\u7a0b\u5b8c\u6210\u3002\n\u5b50\u8fdb\u7a0b: 17020 - \u4efb\u52a11\n\u5b50\u8fdb\u7a0b: 5904 - \u4efb\u52a12\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976\n\u603b\u5171\u7528\u65f62.131091356277466\u79d2<\/code><\/pre>\n\n\n\n<p>\u77e5\u8bc6\u70b9:<\/p>\n\n\n\n<ul><li>\u65b0\u521b\u5efa\u7684\u8fdb\u7a0b\u4e0e\u8fdb\u7a0b\u7684\u5207\u6362\u90fd\u662f\u8981\u8017\u8d44\u6e90\u7684\uff0c\u6240\u4ee5\u5e73\u65f6\u5de5\u4f5c\u4e2d\u8fdb\u7a0b\u6570\u4e0d\u80fd\u5f00\u592a\u5927\u3002<\/li><li>\u540c\u65f6\u53ef\u4ee5\u8fd0\u884c\u7684\u8fdb\u7a0b\u6570\u4e00\u822c\u53d7\u5236\u4e8eCPU\u7684\u6838\u6570\u3002<\/li><li>\u9664\u4e86\u4f7f\u7528Process\u65b9\u6cd5\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528Pool\u7c7b\u521b\u5efa\u591a\u8fdb\u7a0b\u3002<\/li><\/ul>\n\n\n\n<p><strong>\u5229\u7528multiprocess\u6a21\u5757\u7684Pool\u7c7b\u521b\u5efa\u591a\u8fdb\u7a0b<\/strong><\/p>\n\n\n\n<p>\u5f88\u591a\u65f6\u5019\u7cfb\u7edf\u90fd\u9700\u8981\u521b\u5efa\u591a\u4e2a\u8fdb\u7a0b\u4ee5\u63d0\u9ad8CPU\u7684\u5229\u7528\u7387\uff0c\u5f53\u6570\u91cf\u8f83\u5c11\u65f6\uff0c\u53ef\u4ee5\u624b\u52a8\u751f\u6210\u4e00\u4e2a\u4e2aProcess\u5b9e\u4f8b\u3002\u5f53\u8fdb\u7a0b\u6570\u91cf\u5f88\u591a\u65f6\uff0c\u6216\u8bb8\u53ef\u4ee5\u5229\u7528\u5faa\u73af\uff0c\u4f46\u662f\u8fd9\u9700\u8981\u7a0b\u5e8f\u5458\u624b\u52a8\u7ba1\u7406\u7cfb\u7edf\u4e2d\u5e76\u53d1\u8fdb\u7a0b\u7684\u6570\u91cf\uff0c\u6709\u65f6\u4f1a\u5f88\u9ebb\u70e6\u3002\u8fd9\u65f6\u8fdb\u7a0b\u6c60Pool\u5c31\u53ef\u4ee5\u53d1\u6325\u5176\u529f\u6548\u4e86\u3002\u53ef\u4ee5\u901a\u8fc7\u4f20\u9012\u53c2\u6570\u9650\u5236\u5e76\u53d1\u8fdb\u7a0b\u7684\u6570\u91cf\uff0c\u9ed8\u8ba4\u503c\u4e3aCPU\u7684\u6838\u6570\u3002<\/p>\n\n\n\n<p>Pool\u7c7b\u53ef\u4ee5\u63d0\u4f9b\u6307\u5b9a\u6570\u91cf\u7684\u8fdb\u7a0b\u4f9b\u7528\u6237\u8c03\u7528\uff0c\u5f53\u6709\u65b0\u7684\u8bf7\u6c42\u63d0\u4ea4\u5230Pool\u4e2d\u65f6\uff0c\u5982\u679c\u8fdb\u7a0b\u6c60\u8fd8\u6ca1\u6709\u6ee1\uff0c\u5c31\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\u6765\u6267\u884c\u8bf7\u6c42\u3002\u5982\u679c\u6c60\u6ee1\uff0c\u8bf7\u6c42\u5c31\u4f1a\u544a\u77e5\u5148\u7b49\u5f85\uff0c\u76f4\u5230\u6c60\u4e2d\u6709\u8fdb\u7a0b\u7ed3\u675f\uff0c\u624d\u4f1a\u521b\u5efa\u65b0\u7684\u8fdb\u7a0b\u6765\u6267\u884c\u8fd9\u4e9b\u8bf7\u6c42\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u4ecb\u7ecd\u4e00\u4e0bmultiprocessing \u6a21\u5757\u4e0b\u7684Pool\u7c7b\u7684\u51e0\u4e2a\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p>1.apply_async<\/p>\n\n\n\n<p>\u51fd\u6570\u539f\u578b\uff1aapply_async(func[, args=()[, kwds={}[, callback=None]]])<\/p>\n\n\n\n<p>\u5176\u4f5c\u7528\u662f\u5411\u8fdb\u7a0b\u6c60\u63d0\u4ea4\u9700\u8981\u6267\u884c\u7684\u51fd\u6570\u53ca\u53c2\u6570\uff0c \u5404\u4e2a\u8fdb\u7a0b\u91c7\u7528\u975e\u963b\u585e\uff08\u5f02\u6b65\uff09\u7684\u8c03\u7528\u65b9\u5f0f\uff0c\u5373\u6bcf\u4e2a\u5b50\u8fdb\u7a0b\u53ea\u7ba1\u8fd0\u884c\u81ea\u5df1\u7684\uff0c\u4e0d\u7ba1\u5176\u5b83\u8fdb\u7a0b\u662f\u5426\u5df2\u7ecf\u5b8c\u6210\u3002\u8fd9\u662f\u9ed8\u8ba4\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>2.map()<\/p>\n\n\n\n<p>\u51fd\u6570\u539f\u578b\uff1amap(func, iterable[, chunksize=None])<\/p>\n\n\n\n<p>Pool\u7c7b\u4e2d\u7684map\u65b9\u6cd5\uff0c\u4e0e\u5185\u7f6e\u7684map\u51fd\u6570\u7528\u6cd5\u884c\u4e3a\u57fa\u672c\u4e00\u81f4\uff0c\u5b83\u4f1a\u4f7f\u8fdb\u7a0b\u963b\u585e\u76f4\u5230\u7ed3\u679c\u8fd4\u56de\u3002 \u6ce8\u610f\uff1a\u867d\u7136\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u4f46\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u5fc5\u987b\u5728\u6574\u4e2a\u961f\u5217\u90fd\u5c31\u7eea\u540e\uff0c\u7a0b\u5e8f\u624d\u4f1a\u8fd0\u884c\u5b50\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p>3.map_async()<\/p>\n\n\n\n<p>\u51fd\u6570\u539f\u578b\uff1amap_async(func, iterable[, chunksize[, callback]])<br>\u4e0emap\u7528\u6cd5\u4e00\u81f4\uff0c\u4f46\u662f\u5b83\u662f\u975e\u963b\u585e\u7684\u3002\u5176\u6709\u5173\u4e8b\u9879\u89c1apply_async\u3002<\/p>\n\n\n\n<p>4.close()<\/p>\n\n\n\n<p>\u5173\u95ed\u8fdb\u7a0b\u6c60\uff08pool\uff09\uff0c\u4f7f\u5176\u4e0d\u5728\u63a5\u53d7\u65b0\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>5. terminate()<\/p>\n\n\n\n<p>\u7ed3\u675f\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u4e0d\u5728\u5904\u7406\u672a\u5904\u7406\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>6.join()<\/p>\n\n\n\n<p>\u4e3b\u8fdb\u7a0b\u963b\u585e\u7b49\u5f85\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\uff0c join\u65b9\u6cd5\u8981\u5728close\u6216terminate\u4e4b\u540e\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>\u4e0b\u4f8b\u662f\u4e00\u4e2a\u7b80\u5355\u7684multiprocessing.Pool\u7c7b\u7684\u5b9e\u4f8b\u3002\u56e0\u4e3a\u5c0f\u7f16\u6211\u7684CPU\u662f4\u6838\u7684\uff0c\u4e00\u6b21\u6700\u591a\u53ef\u4ee5\u540c\u65f6\u8fd0\u884c4\u4e2a\u8fdb\u7a0b\uff0c\u6240\u4ee5\u6211\u5f00\u542f\u4e86\u4e00\u4e2a\u5bb9\u91cf\u4e3a4\u7684\u8fdb\u7a0b\u6c60\u30024\u4e2a\u8fdb\u7a0b\u9700\u8981\u8ba1\u7b975\u6b21\uff0c\u4f60\u53ef\u4ee5\u60f3\u8c614\u4e2a\u8fdb\u7a0b\u5e76\u884c4\u6b21\u8ba1\u7b97\u4efb\u52a1\u540e\uff0c\u8fd8\u5269\u4e00\u6b21\u8ba1\u7b97\u4efb\u52a1(\u4efb\u52a14)\u6ca1\u6709\u5b8c\u6210\uff0c\u7cfb\u7edf\u4f1a\u7b49\u5f854\u4e2a\u8fdb\u7a0b\u5b8c\u6210\u540e\u91cd\u65b0\u5b89\u6392\u4e00\u4e2a\u8fdb\u7a0b\u6765\u8ba1\u7b97\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from multiprocessing import Pool, cpu_count\nimport os\nimport time\n\n\ndef long_time_task(i):\n    print('\u5b50\u8fdb\u7a0b: {} - \u4efb\u52a1{}'.format(os.getpid(), i))\n    time.sleep(2)\n    print(\"\u7ed3\u679c: {}\".format(8 ** 20))\n\n\nif __name__=='__main__':\n    print(\"CPU\u5185\u6838\u6570:{}\".format(cpu_count()))\n    print('\u5f53\u524d\u6bcd\u8fdb\u7a0b: {}'.format(os.getpid()))\n    start = time.time()\n    p = Pool(4)\n    for i in range(5):\n        p.apply_async(long_time_task, args=(i,))\n    print('\u7b49\u5f85\u6240\u6709\u5b50\u8fdb\u7a0b\u5b8c\u6210\u3002')\n    p.close()\n    p.join()\n    end = time.time()\n    print(\"\u603b\u5171\u7528\u65f6{}\u79d2\".format((end - start)))<\/code><\/pre>\n\n\n\n<p>\u77e5\u8bc6\u70b9:<\/p>\n\n\n\n<ul><li>\u5bf9Pool\u5bf9\u8c61\u8c03\u7528join()\u65b9\u6cd5\u4f1a\u7b49\u5f85\u6240\u6709\u5b50\u8fdb\u7a0b\u6267\u884c\u5b8c\u6bd5\uff0c\u8c03\u7528join()\u4e4b\u524d\u5fc5\u987b\u5148\u8c03\u7528close()\u6216terminate()\u65b9\u6cd5\uff0c\u8ba9\u5176\u4e0d\u518d\u63a5\u53d7\u65b0\u7684Process\u4e86\u3002<\/li><\/ul>\n\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\u6240\u793a\uff0c5\u4e2a\u4efb\u52a1\uff08\u6bcf\u4e2a\u4efb\u52a1\u5927\u7ea6\u8017\u65f62\u79d2)\u4f7f\u7528\u591a\u8fdb\u7a0b\u5e76\u884c\u8ba1\u7b97\u53ea\u97004.37\u79d2,, \u8017\u65f6\u51cf\u5c11\u4e8660%\uff0c\u53ef\u89c1\u5e76\u884c\u8ba1\u7b97\u4f18\u52bf\u8fd8\u662f\u5f88\u660e\u663e\u7684\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CPU\u5185\u6838\u6570:4\n\u5f53\u524d\u6bcd\u8fdb\u7a0b: 2556\n\u7b49\u5f85\u6240\u6709\u5b50\u8fdb\u7a0b\u5b8c\u6210\u3002\n\u5b50\u8fdb\u7a0b: 16480 - \u4efb\u52a10\n\u5b50\u8fdb\u7a0b: 15216 - \u4efb\u52a11\n\u5b50\u8fdb\u7a0b: 15764 - \u4efb\u52a12\n\u5b50\u8fdb\u7a0b: 10176 - \u4efb\u52a13\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976\n\u5b50\u8fdb\u7a0b: 15216 - \u4efb\u52a14\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976\n\u603b\u5171\u7528\u65f64.377134561538696\u79d2<\/code><\/pre>\n\n\n\n<p>\u76f8\u4fe1\u5927\u5bb6\u90fd\u77e5\u9053python\u89e3\u91ca\u5668\u4e2d\u5b58\u5728GIL(\u5168\u5c40\u89e3\u91ca\u5668\u9501), \u5b83\u7684\u4f5c\u7528\u5c31\u662f\u4fdd\u8bc1\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u6267\u884c\u4ee3\u7801\u3002\u7531\u4e8eGIL\u7684\u5b58\u5728\uff0c\u5f88\u591a\u4eba\u8ba4\u4e3apython\u4e2d\u7684\u591a\u7ebf\u7a0b\u5176\u5b9e\u5e76\u4e0d\u662f\u771f\u6b63\u7684\u591a\u7ebf\u7a0b\uff0c\u5982\u679c\u60f3\u8981\u5145\u5206\u5730\u4f7f\u7528\u591a\u6838CPU\u7684\u8d44\u6e90\uff0c\u5728python\u4e2d\u5927\u90e8\u5206\u60c5\u51b5\u9700\u8981\u4f7f\u7528\u591a\u8fdb\u7a0b\u3002\u7136\u800c\u8fd9\u5e76\u610f\u5473\u7740python\u591a\u7ebf\u7a0b\u7f16\u7a0b\u6ca1\u6709\u610f\u4e49\u54e6\uff0c\u8bf7\u7ee7\u7eed\u9605\u8bfb\u4e0b\u6587\u3002<\/p>\n\n\n\n<p><strong>\u591a\u8fdb\u7a0b\u95f4\u7684\u6570\u636e\u5171\u4eab\u4e0e\u901a\u4fe1<\/strong><\/p>\n\n\n\n<p>\u901a\u5e38\uff0c\u8fdb\u7a0b\u4e4b\u95f4\u662f\u76f8\u4e92\u72ec\u7acb\u7684\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u72ec\u7acb\u7684\u5185\u5b58\u3002\u901a\u8fc7\u5171\u4eab\u5185\u5b58(nmap\u6a21\u5757)\uff0c\u8fdb\u7a0b\u4e4b\u95f4\u53ef\u4ee5\u5171\u4eab\u5bf9\u8c61\uff0c\u4f7f\u591a\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u8bbf\u95ee\u540c\u4e00\u4e2a\u53d8\u91cf(\u5730\u5740\u76f8\u540c\uff0c\u53d8\u91cf\u540d\u53ef\u80fd\u4e0d\u540c)\u3002\u591a\u8fdb\u7a0b\u5171\u4eab\u8d44\u6e90\u5fc5\u7136\u4f1a\u5bfc\u81f4\u8fdb\u7a0b\u95f4\u76f8\u4e92\u7ade\u4e89\uff0c\u6240\u4ee5\u5e94\u8be5\u5c3d\u6700\u5927\u53ef\u80fd\u9632\u6b62\u4f7f\u7528\u5171\u4eab\u72b6\u6001\u3002\u8fd8\u6709\u4e00\u79cd\u65b9\u5f0f\u5c31\u662f\u4f7f\u7528\u961f\u5217queue\u6765\u5b9e\u73b0\u4e0d\u540c\u8fdb\u7a0b\u95f4\u7684\u901a\u4fe1\u6216\u6570\u636e\u5171\u4eab\uff0c\u8fd9\u4e00\u70b9\u548c\u591a\u7ebf\u7a0b\u7f16\u7a0b\u7c7b\u4f3c\u3002<\/p>\n\n\n\n<p>\u4e0b\u4f8b\u8fd9\u6bb5\u4ee3\u7801\u4e2d\u4e2d\u521b\u5efa\u4e862\u4e2a\u72ec\u7acb\u8fdb\u7a0b\uff0c\u4e00\u4e2a\u8d1f\u8d23\u5199(pw), \u4e00\u4e2a\u8d1f\u8d23\u8bfb(pr), \u5b9e\u73b0\u4e86\u5171\u4eab\u4e00\u4e2a\u961f\u5217queue\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from multiprocessing import Process, Queue\nimport os, time, random\n\n# \u5199\u6570\u636e\u8fdb\u7a0b\u6267\u884c\u7684\u4ee3\u7801:\ndef write(q):\n    print('Process to write: {}'.format(os.getpid()))\n    for value in &#91;'A', 'B', 'C']:\n        print('Put %s to queue...' % value)\n        q.put(value)\n        time.sleep(random.random())\n\n# \u8bfb\u6570\u636e\u8fdb\u7a0b\u6267\u884c\u7684\u4ee3\u7801:\ndef read(q):\n    print('Process to read:{}'.format(os.getpid()))\n    while True:\n        value = q.get(True)\n        print('Get %s from queue.' % value)\n\nif __name__=='__main__':\n    # \u7236\u8fdb\u7a0b\u521b\u5efaQueue\uff0c\u5e76\u4f20\u7ed9\u5404\u4e2a\u5b50\u8fdb\u7a0b\uff1a\n    q = Queue()\n    pw = Process(target=write, args=(q,))\n    pr = Process(target=read, args=(q,))\n    # \u542f\u52a8\u5b50\u8fdb\u7a0bpw\uff0c\u5199\u5165:\n    pw.start()\n    # \u542f\u52a8\u5b50\u8fdb\u7a0bpr\uff0c\u8bfb\u53d6:\n    pr.start()\n    # \u7b49\u5f85pw\u7ed3\u675f:\n    pw.join()\n    # pr\u8fdb\u7a0b\u91cc\u662f\u6b7b\u5faa\u73af\uff0c\u65e0\u6cd5\u7b49\u5f85\u5176\u7ed3\u675f\uff0c\u53ea\u80fd\u5f3a\u884c\u7ec8\u6b62:\n    pr.terminate()<\/code><\/pre>\n\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\u6240\u793a:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Process to write: 3036\nPut A to queue...\nProcess to read:9408\nGet A from queue.\nPut B to queue...\nGet B from queue.\nPut C to queue...\nGet C from queue.<\/code><\/pre>\n\n\n\n<p class=\"has-light-pink-background-color has-background\"><strong>python\u4e2d\u7684\u591a\u7ebf\u7a0b\uff08\u4f2a\u591a\u7ebf\u7a0b\uff09\uff1a<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u77e5\u9053 Python \u4e4b\u6240\u4ee5\u7075\u6d3b\u548c\u5f3a\u5927\uff0c\u662f\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u89e3\u91ca\u6027\u8bed\u8a00\uff0c\u8fb9\u89e3\u91ca\u8fb9\u6267\u884c\uff0c\u5b9e\u73b0\u8fd9\u79cd\u7279\u6027\u7684\u6807\u51c6\u5b9e\u73b0\u53eb\u4f5c CPython\u3002<\/p>\n\n\n\n<p>\u5b83\u5206\u4e24\u6b65\u6765\u8fd0\u884c Python \u7a0b\u5e8f\uff1a<\/p>\n\n\n\n<ul><li>\u9996\u5148\u89e3\u6790\u6e90\u4ee3\u7801\u6587\u672c\uff0c\u5e76\u5c06\u5176\u7f16\u8bd1\u4e3a<strong>\u5b57\u8282\u7801\uff08bytecode\uff09[1]<\/strong><\/li><li>\u7136\u540e\u91c7\u7528\u57fa\u4e8e\u6808\u7684\u89e3\u91ca\u5668\u6765\u8fd0\u884c\u5b57\u8282\u7801<\/li><li>\u4e0d\u65ad\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u76f4\u5230\u7a0b\u5e8f\u7ed3\u675f\u6216\u8005\u88ab\u7ec8\u6b62<\/li><\/ul>\n\n\n\n<p>\u7075\u6d3b\u6027\u6709\u4e86\uff0c\u4f46\u662f\u4e3a\u4e86\u4fdd\u8bc1\u7a0b\u5e8f\u6267\u884c\u7684\u7a33\u5b9a\u6027\uff0c\u4e5f\u4ed8\u51fa\u4e86\u5de8\u5927\u7684\u4ee3\u4ef7\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u5f15\u5165\u4e86&nbsp;<strong>\u5168\u5c40\u89e3\u91ca\u5668\u9501<\/strong>&nbsp;<strong>GIL\uff08global interpreter lock\uff09[2]<\/strong><\/p><\/blockquote>\n\n\n\n<p>\u4ee5\u4fdd\u8bc1\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a\u5b57\u8282\u7801\u5728\u8fd0\u884c\uff0c\u8fd9\u6837\u5c31\u4e0d\u4f1a\u56e0\u4e3a\u6ca1\u7528\u4e8b\u5148\u7f16\u8bd1\uff0c\u800c\u5f15\u53d1\u8d44\u6e90\u4e89\u593a\u548c\u72b6\u6001\u6df7\u4e71\u7684\u95ee\u9898\u4e86\u3002<\/p>\n\n\n\n<p>\u770b\u4f3c \u201c\u5341\u5168\u5341\u7f8e\u201d \uff0c\u4f46\uff0c\u8fd9\u6837\u505a\uff0c\u5c31\u610f\u5473\u7740\u591a\u7ebf\u7a0b\u6267\u884c\u65f6\uff0c\u4f1a\u88ab GIL \u53d8\u4e3a\u5355\u7ebf\u7a0b\uff0c\u65e0\u6cd5\u5145\u5206\u5229\u7528\u786c\u4ef6\u8d44\u6e90\u3002<\/p>\n\n\n\n<h4>\u6234\u7740\u9563\u94d0\u8df3\u821e<\/h4>\n\n\n\n<p>\u96be\u9053 Python \u91cc\u7684\u591a\u7ebf\u7a0b\u771f\u7684\u6ca1\u7528\u5417\uff1f<\/p>\n\n\n\n<p>\u5176\u5b9e\u4e5f\u5e76\u4e0d\u662f\uff0c\u867d\u7136\u4e86\u56e0\u4e3a GIL\uff0c\u65e0\u6cd5\u5b9e\u73b0\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u591a\u7ebf\u7a0b\uff0c\u4f46\uff0c\u591a\u7ebf\u7a0b\u673a\u5236\uff0c\u8fd8\u662f\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e24\u4e2a\u91cd\u8981\u7684\u7279\u6027\u3002<\/p>\n\n\n\n<h4>\u4e00\uff1a\u591a\u7ebf\u7a0b\u5199\u6cd5\u53ef\u4ee5\u8ba9\u67d0\u4e9b\u7a0b\u5e8f\u66f4\u597d\u5199<\/h4>\n\n\n\n<p>\u600e\u4e48\u7406\u89e3\u5462\uff1f<\/p>\n\n\n\n<p>\u5982\u679c\u8981\u89e3\u51b3\u4e00\u4e2a\u9700\u8981\u540c\u65f6\u7ef4\u62a4\u591a\u79cd\u72b6\u6001\u7684\u7a0b\u5e8f\uff0c\u7528\u5355\u7ebf\u7a0b\u662f\u5b9e\u73b0\u662f\u5f88\u56f0\u96be\u7684\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u8981\u68c0\u7d22\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u6570\u636e\uff0c\u4e3a\u4e86\u63d0\u9ad8\u68c0\u7d22\u6548\u7387\uff0c\u53ef\u4ee5\u5c06\u6587\u4ef6\u5206\u6210\u5c0f\u6bb5\u7684\u6765\u5904\u7406\uff0c\u6700\u5148\u5728\u90a3\u6bb5\u4e2d\u627e\u5230\u4e86\uff0c\u5c31\u7ed3\u675f\u5904\u7406\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>\u7528\u5355\u7ebf\u7a0b\u7684\u8bdd\uff0c\u5f88\u96be\u5b9e\u73b0\u540c\u65f6\u517c\u987e\u591a\u4e2a\u5206\u6bb5\u7684\u60c5\u51b5\uff0c\u53ea\u80fd\u987a\u5e8f\uff0c\u6216\u8005\u7528\u4e8c\u5206\u6cd5\u6267\u884c\u68c0\u7d22\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>\u800c\u91c7\u7528\u591a\u7ebf\u7a0b\uff0c\u53ef\u4ee5\u5c06\u6bcf\u4e2a\u5206\u6bb5\u4ea4\u7ed9\u6bcf\u4e2a\u7ebf\u7a0b\uff0c\u4f1a\u8f6e\u6d41\u6267\u884c\uff0c\u76f8\u5f53\u4e8e\u540c\u65f6\u63a8\u8350\u68c0\u7d22\u4efb\u52a1\uff0c\u5904\u7406\u8d77\u6765\uff0c\u6548\u7387\u4f1a\u6bd4\u987a\u5e8f\u67e5\u627e\u5927\u5927\u63d0\u9ad8\u3002<\/p>\n\n\n\n<h4>\u4e8c\uff1a\u5904\u7406\u963b\u585e\u578b I\/O \u4efb\u52a1\u6548\u7387\u66f4\u9ad8<\/h4>\n\n\n\n<p><strong>\u963b\u585e\u578b I\/O \u7684\u610f\u601d\u662f\uff0c\u5f53\u7cfb\u7edf\u9700\u8981\u4e0e\u6587\u4ef6\u7cfb\u7edf\uff08\u4e5f\u5305\u62ec\u7f51\u7edc\u548c\u7ec8\u7aef\u663e\u793a\uff09\u4ea4\u4e92\u65f6\uff0c\u7531\u4e8e\u6587\u4ef6\u7cfb\u7edf\u76f8\u6bd4\u4e8e CPU \u7684\u5904\u7406\u901f\u5ea6\u6162\u5f97\u591a\uff0c\u6240\u4ee5\u7a0b\u5e8f\u4f1a\u88ab\u8bbe\u7f6e\u4e3a\u963b\u585e\u72b6\u6001\uff0c\u5373\uff0c\u4e0d\u518d\u88ab\u5206\u914d\u8ba1\u7b97\u8d44\u6e90\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u76f4\u5230\u6587\u4ef6\u7cfb\u7edf\u7684\u7ed3\u679c\u8fd4\u56de\uff0c\u624d\u4f1a\u88ab\u6fc0\u6d3b\uff0c\u5c06\u6709\u673a\u4f1a\u518d\u6b21\u88ab\u5206\u914d\u8ba1\u7b97\u8d44\u6e90\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5904\u4e8e\u963b\u585e\u72b6\u6001\u7684\u7a0b\u5e8f\uff0c\u4f1a\u4e00\u76f4\u7b49\u7740\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u90a3\u4e48\u5982\u679c\u4e00\u4e2a\u7a0b\u5e8f\u662f\u9700\u8981\u4e0d\u65ad\u5730\u4ece\u6587\u4ef6\u7cfb\u7edf\u8bfb\u53d6\u6570\u636e\uff0c\u5904\u7406\u540e\u5728\u5199\u5165\uff0c\u5355\u7ebf\u7a0b\u7684\u8bdd\u5c31\u9700\u8981\u7b49\u7b49\u8bfb\u53d6\u540e\uff0c\u624d\u80fd\u5904\u7406\uff0c\u7b49\u5f85\u5904\u7406\u5b8c\u624d\u80fd\u5199\u5165\uff0c\u4e8e\u662f\u5904\u7406\u8fc7\u7a0b\u5c31\u6210\u4e86\u4e00\u4e2a\u4e2a\u7684\u7b49\u5f85\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u800c\u7528\u591a\u7ebf\u7a0b\uff0c\u5f53\u4e00\u4e2a\u5904\u7406\u8fc7\u7a0b\u88ab\u963b\u585e\u4e4b\u540e\uff0c\u5c31\u4f1a\u7acb\u5373\u88ab GIL \u5207\u8d70\uff0c\u5c06\u8ba1\u7b97\u8d44\u6e90\u5206\u914d\u7ed9\u5176\u4ed6\u53ef\u4ee5\u6267\u884c\u7684\u8fc7\u7a0b\uff0c\u4ece\u800c\u63d0\u793a\u6267\u884c\u6548\u7387\u3002<\/strong><\/p>\n\n\n\n<p>\u6709\u4e86\u8fd9\u4e24\u4e2a\u7279\u6027\uff0c\u5c31\u8bf4\u660e Python \u7684\u591a\u7ebf\u7a0b\u5e76\u975e\u4e00\u65e0\u662f\u5904\uff0c\u5982\u679c\u80fd\u6839\u636e\u60c5\u51b5\u7f16\u5199\u597d\uff0c\u6548\u7387\u4f1a\u5927\u5927\u63d0\u9ad8\uff0c\u53ea\u4e0d\u8fc7\u5bf9\u4e8e\u8ba1\u7b97\u5bc6\u96c6\u578b\u7684\u4efb\u52a1\uff0c\u591a\u7ebf\u7a0b\u7279\u6027\u7231\u83ab\u80fd\u52a9\u3002<\/p>\n\n\n\n<h4>\u81ea\u5f3a\u4e0d\u606f<\/h4>\n\n\n\n<p>\u4e86\u89e3\u5230 Python \u591a\u7ebf\u7a0b\u7684\u95ee\u9898\u548c\u89e3\u51b3\u65b9\u6848\uff0c\u5bf9\u4e8e\u949f\u7231 Python \u7684\u6211\u4eec\uff0c\u4f55\u53bb\u4f55\u4ece\u5462\uff1f<\/p>\n\n\n\n<p>\u6709\u53e5\u8bdd\u7528\u5728\u8fd9\u91cc\u5f88\u5408\u9002\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u6c42\u4eba\u4e0d\u5982\u6c42\u5df1<\/p><\/blockquote>\n\n\n\n<p>\u54ea\u6015\u518d\u600e\u4e48\u5389\u5bb3\u7684\u5de5\u5177\u6216\u8005\u6b66\u5668\uff0c\u90fd\u65e0\u6cd5\u89e3\u51b3\u6240\u6709\u7684\u95ee\u9898\uff0c\u800c\u95ee\u9898\u4e4b\u6240\u4ee5\u80fd\u88ab\u89e3\u51b3\uff0c\u4e3b\u8981\u662f\u56e0\u4e3a\u6211\u4eec\u7684\u4e3b\u89c2\u80fd\u52a8\u6027\u3002<\/p>\n\n\n\n<p>\u5bf9\u60c5\u51b5\u8fdb\u884c\u5206\u6790\u5224\u65ad\uff0c\u9009\u62e9\u5408\u9002\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4e0d\u5c31\u662f\u9700\u8981\u6211\u4eec\u505a\u7684\u4e48\uff1f<\/p>\n\n\n\n<p>\u5bf9\u4e8e Python \u4e2d \u591a\u7ebf\u7a0b\u7684\u8bdf\u75c5\uff0c\u6211\u4eec\u66f4\u591a\u7684\u662f\u770b\u5230\u5b83\u9633\u5149\u548c\u7f8e\u7684\u4e00\u9762\uff0c\u800c\u5bf9\u4e8e\u9700\u8981\u63d0\u5347\u901f\u5ea6\u7684\u5730\u65b9\uff0c\u91c7\u53d6\u5408\u9002\u7684\u65b9\u5f0f\u3002\u8fd9\u91cc\u7b80\u5355\u603b\u7ed3\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<ol><li>I\/O \u5bc6\u96c6\u578b\u7684\u4efb\u52a1\uff0c\u91c7\u7528 Python \u7684\u591a\u7ebf\u7a0b\u5b8c\u5168\u6ca1\u7528\u95ee\u9898\uff0c\u53ef\u4ee5\u5927\u5e45\u5ea6\u63d0\u9ad8\u6267\u884c\u6548\u7387<\/li><li>\u5bf9\u4e8e\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\uff0c\u8981\u770b\u6570\u636e\u4f9d\u8d56\u6027\u662f\u5426\u4f4e\uff0c\u5982\u679c\u4f4e\uff0c\u91c7\u7528 ProcessPoolExecutor \u4ee3\u66ff\u591a\u7ebf\u7a0b\u5904\u7406\uff0c\u53ef\u4ee5\u5145\u5206\u5229\u7528\u786c\u4ef6\u8d44\u6e90<\/li><li>\u5982\u679c\u6570\u636e\u4f9d\u8d56\u6027\u9ad8\uff0c\u53ef\u4ee5\u8003\u8651\u5c06\u5173\u952e\u7684\u5730\u65b9\u8be5\u7528 C \u6765\u5b9e\u73b0\uff0c\u4e00\u65b9\u9762 C \u672c\u8eab\u6bd4 Python \u66f4\u5feb\uff0c\u53e6\u4e00\u65b9\u9762\uff0cC \u53ef\u4ee5\u4e4b\u95f4\u4f7f\u7528\u66f4\u5e95\u5c42\u7684\u591a\u7ebf\u7a0b\u673a\u5236\uff0c\u800c\u5b8c\u5168\u4e0d\u7528\u62c5\u5fc3\u53d7 GIL \u7684\u5f71\u54cd<\/li><li>\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e8e\u53ea\u80fd\u7528\u591a\u7ebf\u7a0b\u5904\u7406\u7684\u4efb\u52a1\uff0c\u4e0d\u7528\u592a\u591a\u8003\u8651\uff0c\u4e4b\u95f4\u5229\u7528 Python \u7684\u591a\u7ebf\u7a0b\u673a\u5236\u5c31\u597d\u4e86\uff0c\u4e0d\u7528\u8003\u8651\u592a\u591a<\/li><\/ol>\n\n\n\n<p class=\"has-light-pink-background-color has-background\"><strong>Python\u7684\u591a\u7ebf\u7a0b\u7f16\u7a0b\u4e0ethreading\u6a21\u5757<\/strong><\/p>\n\n\n\n<p>python 3\u4e2d\u7684\u591a\u8fdb\u7a0b\u7f16\u7a0b\u4e3b\u8981\u4f9d\u9760threading\u6a21\u5757\u3002\u521b\u5efa\u65b0\u7ebf\u7a0b\u4e0e\u521b\u5efa\u65b0\u8fdb\u7a0b\u7684\u65b9\u6cd5\u975e\u5e38\u7c7b\u4f3c\u3002threading.Thread\u65b9\u6cd5\u53ef\u4ee5\u63a5\u6536\u4e24\u4e2a\u53c2\u6570, \u7b2c\u4e00\u4e2a\u662ftarget\uff0c\u4e00\u822c\u6307\u5411\u51fd\u6570\u540d\uff0c\u7b2c\u4e8c\u4e2a\u65f6args\uff0c\u9700\u8981\u5411\u51fd\u6570\u4f20\u9012\u7684\u53c2\u6570\u3002\u5bf9\u4e8e\u521b\u5efa\u7684\u65b0\u7ebf\u7a0b\uff0c\u8c03\u7528start()\u65b9\u6cd5\u5373\u53ef\u8ba9\u5176\u5f00\u59cb\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528current_thread().name\u6253\u5370\u51fa\u5f53\u524d\u7ebf\u7a0b\u7684\u540d\u5b57\u3002 \u4e0b\u4f8b\u4e2d\u6211\u4eec\u4f7f\u7528\u591a\u7ebf\u7a0b\u6280\u672f\u91cd\u6784\u4e4b\u524d\u7684\u8ba1\u7b97\u4ee3\u7801\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import threading\nimport time\n\n\ndef long_time_task(i):\n    print('\u5f53\u524d\u5b50\u7ebf\u7a0b: {} - \u4efb\u52a1{}'.format(threading.current_thread().name, i))\n    time.sleep(2)\n    print(\"\u7ed3\u679c: {}\".format(8 ** 20))\n\n\nif __name__=='__main__':\n    start = time.time()\n    print('\u8fd9\u662f\u4e3b\u7ebf\u7a0b\uff1a{}'.format(threading.current_thread().name))\n    t1 = threading.Thread(target=long_time_task, args=(1,))\n    t2 = threading.Thread(target=long_time_task, args=(2,))\n    t1.start()\n    t2.start()\n\n    end = time.time()\n    print(\"\u603b\u5171\u7528\u65f6{}\u79d2\".format((end - start)))<\/code><\/pre>\n\n\n\n<p>\u4e0b\u9762\u662f\u8f93\u51fa\u7ed3\u679c\u3002\u4e3a\u4ec0\u4e48\u603b\u8017\u65f6\u5c45\u7136\u662f0\u79d2? \u6211\u4eec\u53ef\u4ee5\u660e\u663e\u770b\u5230\u4e3b\u7ebf\u7a0b\u548c\u5b50\u7ebf\u7a0b\u5176\u5b9e\u662f\u72ec\u7acb\u8fd0\u884c\u7684\uff0c\u4e3b\u7ebf\u7a0b\u6839\u672c\u6ca1\u6709\u7b49\u5b50\u7ebf\u7a0b\u5b8c\u6210\uff0c\u800c\u662f\u81ea\u5df1\u7ed3\u675f\u540e\u5c31\u6253\u5370\u4e86\u6d88\u8017\u65f6\u95f4\u3002\u4e3b\u7ebf\u7a0b\u7ed3\u675f\u540e\uff0c\u5b50\u7ebf\u7a0b\u4ecd\u5728\u72ec\u7acb\u8fd0\u884c\uff0c\u8fd9\u663e\u7136\u4e0d\u662f\u6211\u4eec\u60f3\u8981\u7684\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u8fd9\u662f\u4e3b\u7ebf\u7a0b\uff1aMainThread\n\u5f53\u524d\u5b50\u7ebf\u7a0b: Thread-1 - \u4efb\u52a11\n\u5f53\u524d\u5b50\u7ebf\u7a0b: Thread-2 - \u4efb\u52a12\n\u603b\u5171\u7528\u65f60.0017192363739013672\u79d2\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u8981\u5b9e\u73b0\u4e3b\u7ebf\u7a0b\u548c\u5b50\u7ebf\u7a0b\u7684\u540c\u6b65\uff0c\u6211\u4eec\u5fc5\u9700\u4f7f\u7528join\u65b9\u6cd5\uff08\u4ee3\u7801\u5982\u4e0b\u6240\u793a)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import threading\nimport time\n\n\ndef long_time_task(i):\n    print('\u5f53\u524d\u5b50\u7ebf\u7a0b: {} \u4efb\u52a1{}'.format(threading.current_thread().name, i))\n    time.sleep(2)\n    print(\"\u7ed3\u679c: {}\".format(8 ** 20))\n\n\nif __name__=='__main__':\n    start = time.time()\n    print('\u8fd9\u662f\u4e3b\u7ebf\u7a0b\uff1a{}'.format(threading.current_thread().name))\n    thread_list = &#91;]\n    for i in range(1, 3):\n        t = threading.Thread(target=long_time_task, args=(i, ))\n        thread_list.append(t)\n\n    for t in thread_list:\n        t.start()\n\n    for t in thread_list:\n        t.join()\n\n    end = time.time()\n    print(\"\u603b\u5171\u7528\u65f6{}\u79d2\".format((end - start)))<\/code><\/pre>\n\n\n\n<p>\u4fee\u6539\u4ee3\u7801\u540e\u7684\u8f93\u51fa\u5982\u4e0b\u6240\u793a\u3002\u8fd9\u65f6\u4f60\u53ef\u4ee5\u770b\u5230\u4e3b\u7ebf\u7a0b\u5728\u7b49\u5b50\u7ebf\u7a0b\u5b8c\u6210\u540e\u624d\u7b54\u5e94\u51fa\u603b\u6d88\u8017\u65f6\u95f4(2\u79d2)\uff0c\u6bd4\u6b63\u5e38\u987a\u5e8f\u6267\u884c\u4ee3\u7801(4\u79d2)\u8fd8\u662f\u8282\u7701\u4e86\u4e0d\u5c11\u65f6\u95f4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u8fd9\u662f\u4e3b\u7ebf\u7a0b\uff1aMainThread\n\u5f53\u524d\u5b50\u7ebf\u7a0b: Thread - 1 \u4efb\u52a11\n\u5f53\u524d\u5b50\u7ebf\u7a0b: Thread - 2 \u4efb\u52a12\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976\n\u603b\u5171\u7528\u65f62.0166890621185303\u79d2<\/code><\/pre>\n\n\n\n<p>\u5f53\u6211\u4eec\u8bbe\u7f6e\u591a\u7ebf\u7a0b\u65f6\uff0c\u4e3b\u7ebf\u7a0b\u4f1a\u521b\u5efa\u591a\u4e2a\u5b50\u7ebf\u7a0b\uff0c\u5728python\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e3b\u7ebf\u7a0b\u548c\u5b50\u7ebf\u7a0b\u72ec\u7acb\u8fd0\u884c\u4e92\u4e0d\u5e72\u6d89\u3002\u5982\u679c\u5e0c\u671b\u8ba9\u4e3b\u7ebf\u7a0b\u7b49\u5f85\u5b50\u7ebf\u7a0b\u5b9e\u73b0\u7ebf\u7a0b\u7684\u540c\u6b65\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528join()\u65b9\u6cd5\u3002\u5982\u679c\u6211\u4eec\u5e0c\u671b\u4e00\u4e2a\u4e3b\u7ebf\u7a0b\u7ed3\u675f\u65f6\u4e0d\u518d\u6267\u884c\u5b50\u7ebf\u7a0b\uff0c\u6211\u4eec\u5e94\u8be5\u600e\u4e48\u529e\u5462? \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528t.setDaemon(True)\uff0c\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import threading\nimport time\n\n\ndef long_time_task():\n    print('\u5f53\u5b50\u7ebf\u7a0b: {}'.format(threading.current_thread().name))\n    time.sleep(2)\n    print(\"\u7ed3\u679c: {}\".format(8 ** 20))\n\n\nif __name__=='__main__':\n    start = time.time()\n    print('\u8fd9\u662f\u4e3b\u7ebf\u7a0b\uff1a{}'.format(threading.current_thread().name))\n    for i in range(5):\n        t = threading.Thread(target=long_time_task, args=())\n        t.setDaemon(True)\n        t.start()\n\n    end = time.time()\n    print(\"\u603b\u5171\u7528\u65f6{}\u79d2\".format((end - start)))<\/code><\/pre>\n\n\n\n<p><strong>\u901a\u8fc7\u7ee7\u627fThread\u7c7b\u91cd\u5199run\u65b9\u6cd5\u521b\u5efa\u65b0\u8fdb\u7a0b<\/strong><\/p>\n\n\n\n<p>\u9664\u4e86\u4f7f\u7528Thread()\u65b9\u6cd5\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u7ee7\u627fThread\u7c7b\u91cd\u5199run\u65b9\u6cd5\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\uff0c\u8fd9\u79cd\u65b9\u6cd5\u66f4\u7075\u6d3b\u3002\u4e0b\u4f8b\u4e2d\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u7c7b\u4e3aMyThread, \u968f\u540e\u6211\u4eec\u901a\u8fc7\u8be5\u7c7b\u7684\u5b9e\u4f8b\u5316\u521b\u5efa\u4e862\u4e2a\u5b50\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#-*- encoding:utf-8 -*-\nimport threading\nimport time\n\n\ndef long_time_task(i):\n    time.sleep(2)\n    return 8**20\n\n\nclass MyThread(threading.Thread):\n    def __init__(self, func, args , name='', ):\n        threading.Thread.__init__(self)\n        self.func = func\n        self.args = args\n        self.name = name\n        self.result = None\n\n    def run(self):\n        print('\u5f00\u59cb\u5b50\u8fdb\u7a0b{}'.format(self.name))\n        self.result = self.func(self.args&#91;0],)\n        print(\"\u7ed3\u679c: {}\".format(self.result))\n        print('\u7ed3\u675f\u5b50\u8fdb\u7a0b{}'.format(self.name))\n\n\nif __name__=='__main__':\n    start = time.time()\n    threads = &#91;]\n    for i in range(1, 3):\n        t = MyThread(long_time_task, (i,), str(i))\n        threads.append(t)\n\n    for t in threads:\n        t.start()\n    for t in threads:\n        t.join()\n\n    end = time.time()\n    print(\"\u603b\u5171\u7528\u65f6{}\u79d2\".format((end - start)))\n<\/code><\/pre>\n\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\u6240\u793a:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5f00\u59cb\u5b50\u8fdb\u7a0b1\n\u5f00\u59cb\u5b50\u8fdb\u7a0b2\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u679c: 1152921504606846976\n\u7ed3\u675f\u5b50\u8fdb\u7a0b1\n\u7ed3\u675f\u5b50\u8fdb\u7a0b2\n\u603b\u5171\u7528\u65f62.005445718765259\u79d2\n<\/code><\/pre>\n\n\n\n<p><strong>\u4e0d\u540c\u7ebf\u7a0b\u95f4\u7684\u6570\u636e\u5171\u4eab<\/strong><\/p>\n\n\n\n<p>\u4e00\u4e2a\u8fdb\u7a0b\u6240\u542b\u7684\u4e0d\u540c\u7ebf\u7a0b\u95f4\u5171\u4eab\u5185\u5b58\uff0c\u8fd9\u5c31\u610f\u5473\u7740\u4efb\u4f55\u4e00\u4e2a\u53d8\u91cf\u90fd\u53ef\u4ee5\u88ab\u4efb\u4f55\u4e00\u4e2a\u7ebf\u7a0b\u4fee\u6539\uff0c\u56e0\u6b64\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\u6570\u636e\u6700\u5927\u7684\u5371\u9669\u5728\u4e8e\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u6539\u4e00\u4e2a\u53d8\u91cf\uff0c\u628a\u5185\u5bb9\u7ed9\u6539\u4e71\u4e86\u3002\u5982\u679c\u4e0d\u540c\u7ebf\u7a0b\u95f4\u6709\u5171\u4eab\u7684\u53d8\u91cf\uff0c\u5176\u4e2d\u4e00\u4e2a\u65b9\u6cd5\u5c31\u662f\u5728\u4fee\u6539\u524d\u7ed9\u5176\u4e0a\u4e00\u628a\u9501lock\uff0c\u786e\u4fdd\u4e00\u6b21\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u80fd\u4fee\u6539\u5b83\u3002threading.lock()\u65b9\u6cd5\u53ef\u4ee5\u8f7b\u6613\u5b9e\u73b0\u5bf9\u4e00\u4e2a\u5171\u4eab\u53d8\u91cf\u7684\u9501\u5b9a\uff0c\u4fee\u6539\u5b8c\u540erelease\u4f9b\u5176\u5b83\u7ebf\u7a0b\u4f7f\u7528\u3002\u6bd4\u5982\u4e0b\u4f8b\u4e2d\u8d26\u6237\u4f59\u989dbalance\u662f\u4e00\u4e2a\u5171\u4eab\u53d8\u91cf\uff0c\u4f7f\u7528lock\u53ef\u4ee5\u4f7f\u5176\u4e0d\u88ab\u6539\u4e71\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># -*- coding: utf-8 -*\n\nimport threading\n\n\nclass Account:\n    def __init__(self):\n        self.balance = 0\n\n    def add(self, lock):\n        # \u83b7\u5f97\u9501\n        lock.acquire()\n        for i in range(0, 100000):\n            self.balance += 1\n        # \u91ca\u653e\u9501\n        lock.release()\n\n    def delete(self, lock):\n        # \u83b7\u5f97\u9501\n        lock.acquire()\n        for i in range(0, 100000):\n            self.balance -= 1\n            # \u91ca\u653e\u9501\n        lock.release()\n\n\nif __name__ == \"__main__\":\n    account = Account()\n    lock = threading.Lock()\n    # \u521b\u5efa\u7ebf\u7a0b\n   thread_add = threading.Thread(target=account.add, args=(lock,), name='Add')\n    thread_delete = threading.Thread(target=account.delete, args=(lock,), name='Delete')\n\n    # \u542f\u52a8\u7ebf\u7a0b\n   thread_add.start()\n    thread_delete.start()\n\n    # \u7b49\u5f85\u7ebf\u7a0b\u7ed3\u675f\n   thread_add.join()\n    thread_delete.join()\n\n    print('The final balance is: {}'.format(account.balance))<\/code><\/pre>\n\n\n\n<p>\u53e6\u4e00\u79cd\u5b9e\u73b0\u4e0d\u540c\u7ebf\u7a0b\u95f4\u6570\u636e\u5171\u4eab\u7684\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528\u6d88\u606f\u961f\u5217queue\u3002\u4e0d\u50cf\u5217\u8868\uff0cqueue\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u53ef\u4ee5\u653e\u5fc3\u4f7f\u7528\uff0c\u89c1\u4e0b\u6587\u3002<\/p>\n\n\n\n<p><strong>\u4f7f\u7528queue\u961f\u5217\u901a\u4fe1-\u7ecf\u5178\u7684\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6a21\u578b<\/strong><\/p>\n\n\n\n<p>\u4e0b\u4f8b\u4e2d\u521b\u5efa\u4e86\u4e24\u4e2a\u7ebf\u7a0b\uff0c\u4e00\u4e2a\u8d1f\u8d23\u751f\u6210\uff0c\u4e00\u4e2a\u8d1f\u8d23\u6d88\u8d39\uff0c\u6240\u751f\u6210\u7684\u4ea7\u54c1\u5b58\u653e\u5728queue\u91cc\uff0c\u5b9e\u73b0\u4e86\u4e0d\u540c\u7ebf\u7a0b\u95f4\u6c9f\u901a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from queue import Queue\nimport random, threading, time\n\n\n# \u751f\u4ea7\u8005\u7c7b\nclass Producer(threading.Thread):\n    def __init__(self, name, queue):\n        threading.Thread.__init__(self, name=name)\n        self.queue = queue\n\n    def run(self):\n        for i in range(1, 5):\n            print(\"{} is producing {} to the queue!\".format(self.getName(), i))\n            self.queue.put(i)\n            time.sleep(random.randrange(10) \/ 5)\n        print(\"%s finished!\" % self.getName())\n\n\n# \u6d88\u8d39\u8005\u7c7b\nclass Consumer(threading.Thread):\n    def __init__(self, name, queue):\n        threading.Thread.__init__(self, name=name)\n        self.queue = queue\n\n    def run(self):\n        for i in range(1, 5):\n            val = self.queue.get()\n            print(\"{} is consuming {} in the queue.\".format(self.getName(), val))\n            time.sleep(random.randrange(10))\n        print(\"%s finished!\" % self.getName())\n\n\ndef main():\n    queue = Queue()\n    producer = Producer('Producer', queue)\n    consumer = Consumer('Consumer', queue)\n\n    producer.start()\n    consumer.start()\n\n    producer.join()\n    consumer.join()\n    print('All threads finished!')\n\n\nif __name__ == '__main__':\n    main()\n<\/code><\/pre>\n\n\n\n<p>\u961f\u5217queue\u7684put\u65b9\u6cd5\u53ef\u4ee5\u5c06\u4e00\u4e2a\u5bf9\u8c61obj\u653e\u5165\u961f\u5217\u4e2d\u3002\u5982\u679c\u961f\u5217\u5df2\u6ee1\uff0c\u6b64\u65b9\u6cd5\u5c06\u963b\u585e\u81f3\u961f\u5217\u6709\u7a7a\u95f4\u53ef\u7528\u4e3a\u6b62\u3002queue\u7684get\u65b9\u6cd5\u4e00\u6b21\u8fd4\u56de\u961f\u5217\u4e2d\u7684\u4e00\u4e2a\u6210\u5458\u3002\u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0c\u6b64\u65b9\u6cd5\u5c06\u963b\u585e\u81f3\u961f\u5217\u4e2d\u6709\u6210\u5458\u53ef\u7528\u4e3a\u6b62\u3002queue\u540c\u65f6\u8fd8\u81ea\u5e26emtpy(), full()\u7b49\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u961f\u5217\u662f\u5426\u4e3a\u7a7a\u6216\u5df2\u6ee1\uff0c\u4f46\u662f\u8fd9\u4e9b\u65b9\u6cd5\u5e76\u4e0d\u53ef\u9760\uff0c\u56e0\u4e3a\u591a\u7ebf\u7a0b\u548c\u591a\u8fdb\u7a0b\uff0c\u5728\u8fd4\u56de\u7ed3\u679c\u548c\u4f7f\u7528\u7ed3\u679c\u4e4b\u95f4\uff0c\u961f\u5217\u4e2d\u53ef\u80fd\u6dfb\u52a0\/\u5220\u9664\u4e86\u6210\u5458\u3002<\/p>\n\n\n\n<p><strong>Python\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u54ea\u4e2a\u5feb?<\/strong><\/p>\n\n\n\n<p>\u7531\u4e8eGIL\u7684\u5b58\u5728\uff0c\u5f88\u591a\u4eba\u8ba4\u4e3aPython\u591a\u8fdb\u7a0b\u7f16\u7a0b\u66f4\u5feb\uff0c\u9488\u5bf9\u591a\u6838CPU\uff0c\u7406\u8bba\u4e0a\u6765\u8bf4\u4e5f\u662f\u91c7\u7528\u591a\u8fdb\u7a0b\u66f4\u80fd\u6709\u6548\u5229\u7528\u8d44\u6e90\u3002\u7f51\u4e0a\u5f88\u591a\u4eba\u5df2\u505a\u8fc7\u6bd4\u8f83\uff0c\u6211\u76f4\u63a5\u544a\u8bc9\u4f60\u7ed3\u8bba\u5427\u3002<\/p>\n\n\n\n<ul><li>\u5bf9CPU\u5bc6\u96c6\u578b\u4ee3\u7801(\u6bd4\u5982\u5faa\u73af\u8ba1\u7b97) &#8211; \u591a\u8fdb\u7a0b\u6548\u7387\u66f4\u9ad8<\/li><li>\u5bf9IO\u5bc6\u96c6\u578b\u4ee3\u7801(\u6bd4\u5982\u6587\u4ef6\u64cd\u4f5c\uff0c\u7f51\u7edc\u722c\u866b) &#8211; 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1. \u57fa\u672c\u6982\u5ff5\uff1a \u8fdb\u7a0b\u662f\u5bf9\u8fd0\u884c\u65f6\u7a0b\u5e8f\u7684\u5c01\u88c5\uff0c\u662f\u7cfb\u7edf &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2023\/03\/05\/python-multiprocessing-and-multithreading\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">PYTHON &#8212; 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