{"id":4985,"date":"2021-01-24T21:04:39","date_gmt":"2021-01-24T13:04:39","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4985"},"modified":"2021-01-24T21:04:39","modified_gmt":"2021-01-24T13:04:39","slug":"%e4%bb%8e0%e5%88%b01%ef%bc%8cpython%e5%bc%82%e6%ad%a5%e7%bc%96%e7%a8%8b%e7%9a%84%e6%bc%94%e8%bf%9b%e4%b9%8b%e8%b7%af","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4985","title":{"rendered":"\u4ece0\u52301\uff0cPython\u5f02\u6b65\u7f16\u7a0b\u7684\u6f14\u8fdb\u4e4b\u8def"},"content":{"rendered":"
\u539f\u6587\u5730\u5740<\/a><\/div>\n
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\u672c\u6587\u5c06\u901a\u8fc7\u4e00\u4e9b\u4f8b\u5b50\u6765\u8bb2\u8ff0\u4f5c\u4e3aPython\u5f00\u53d1\u8005\u6709\u54ea\u4e9b\u5e38\u7528\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u5f02\u6b65\u7f16\u7a0b\uff0c\u4ee5\u53ca\u5206\u4eab\u4e2a\u4eba\u5bf9\u5f02\u6b65\u7f16\u7a0b\u7684\u7406\u89e3\uff0c\u5982\u6709\u9519\u8bef\uff0c\u6b22\u8fce\u6307\u6b63\u3002<\/p>\n

\u5148\u4ece\u4e00\u4e2a\u4f8b\u5b50\u8bf4\u8d77\u3002<\/p>\n

\u5c0f\u6881\u662f\u4e00\u4e2a\u5fe0\u5b9e\u7684\u7535\u5f71\u597d\u7231\u8005\uff0c\u6709\u4e00\u5929\uff0c\u5c0f\u6881\u770b\u5230\u8c46\u74e3\u8fd9\u4e2a\u7f51\u7ad9\uff0c\u53d1\u73b0\u4e86\u5f88\u591a\u81ea\u5df1\u559c\u6b22\u7684\u5185\u5bb9\uff0c\u6070\u597d\u5c0f\u6881\u662f\u4e2a\u7a0b\u5e8f\u733f\uff0c\u4e8e\u662f\u5fc3\u8840\u6765\u6f6e\u7684\u4ed6\u51b3\u5b9a\u5199\u4e2a\u7a0b\u5e8f\uff0c\u628a\u8c46\u74e3Top250\u7684\u7535\u5f71\u5217\u8868\u7ed9\u722c\u4e0b\u6765\u3002\u5c0f\u6881\u5e73\u65f6\u662f\u4e2aPython\u53d1\u70e7\u53cb\uff0c\u505a\u8d77\u8fd9\u4e9b\u4e8b\u60c5\u6765\u81ea\u7136\u662f\u5f97\u5fc3\u5e94\u624b\uff0c\u4e8e\u662f\u4ed6\u6b23\u559c\u5730\u64b8\u8d77\u8896\u5b50\u5c31\u662f\u5e72\uff01\u679c\u4e0d\u5176\u7136\uff0c\u4e0d\u5230\u5341\u5206\u949f\uff0c\u5c0f\u6881\u5c31\u5199\u597d\u4e86\u7b2c\u4e00\u4e2a\u7a0b\u5e8f\u3002<\/p>\n

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#-*- coding:utf-8 -*-<\/span>\r\nimport<\/span> urllib.request<\/span>\r\nimport<\/span> ssl<\/span>\r\nfrom<\/span> lxml<\/span> import<\/span> etree<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\ncontext<\/span> =<\/span> ssl<\/span>.<\/span>SSLContext<\/span>(<\/span>ssl<\/span>.<\/span>PROTOCOL_TLSv1_1<\/span>)<\/span>\r\n\r\ndef<\/span> fetch_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> urllib<\/span>.<\/span>request<\/span>.<\/span>urlopen<\/span>(<\/span>url<\/span>,<\/span> context<\/span>=<\/span>context<\/span>)<\/span>\r\n    return<\/span> response<\/span>\r\n\r\ndef<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n    page<\/span> =<\/span> response<\/span>.<\/span>read<\/span>()<\/span>\r\n    html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n\r\n    xpath_movie<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/ol\/li'<\/span>\r\n    xpath_title<\/span> =<\/span> '.\/\/span[@class=\"title\"]'<\/span>\r\n    xpath_pages<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/div[2]\/a'<\/span>\r\n\r\n    pages<\/span> =<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_pages<\/span>)<\/span>\r\n    fetch_list<\/span> =<\/span> []<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> p<\/span> in<\/span> pages<\/span>:<\/span>\r\n        fetch_list<\/span>.<\/span>append<\/span>(<\/span>url<\/span> +<\/span> p<\/span>.<\/span>get<\/span>(<\/span>'href'<\/span>))<\/span>\r\n\r\n    for<\/span> url<\/span> in<\/span> fetch_list<\/span>:<\/span>\r\n        response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n        page<\/span> =<\/span> response<\/span>.<\/span>read<\/span>()<\/span>\r\n        html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n        for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n            result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> movie<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> movie<\/span>.<\/span>find<\/span>(<\/span>xpath_title<\/span>)<\/span>.<\/span>text<\/span>         \r\n        print<\/span>(<\/span>i<\/span>,<\/span> title<\/span>)<\/span>\r\n\r\n\r\ndef<\/span> main<\/span>():<\/span>\r\n    parse<\/span>(<\/span>url<\/span>)<\/span>\r\n\r\nif<\/span> __name__<\/span> ==<\/span> '__main__'<\/span>:<\/span>\r\n    main<\/span>()<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u7a0b\u5e8f\u4e5f\u4e0d\u51fa\u610f\u5916\u5730\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n
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\u4f46\u662f\uff0c\u8fd9\u4e2a\u7a0b\u5e8f\u8ba9\u4eba\u611f\u89c9\u6bd4\u8f83\u6162\uff0c\u6709\u591a\u6162\u5462\uff1f\u5c0f\u6881\u5728\u4e3b\u51fd\u6570\u4e2d\u52a0\u4e86\u4e0b\u9762\u4e00\u6bb5\u4ee3\u7801\u3002<\/p>\n
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def<\/span> main<\/span>():<\/span>\r\n    from<\/span> time<\/span> import<\/span> time<\/span>\r\n    start<\/span> =<\/span> time<\/span>()<\/span>    \r\n    for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>5<\/span>):<\/span>\r\n        parse<\/span>(<\/span>url<\/span>)<\/span>\r\n    end<\/span> =<\/span> time<\/span>()<\/span>\r\n    print<\/span> (<\/span>'Cost {} seconds'<\/span>.<\/span>format<\/span>((<\/span>end<\/span> -<\/span> start<\/span>)<\/span> \/<\/span> 5<\/span>))<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u53d1\u73b0\u603b\u5171\u8017\u65f67.6\u79d2\uff01\uff01<\/p>\n
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python movie.py\r\nCost 7.619797945022583 seconds\r\n<\/code><\/pre>\n<\/div>\n
\u5c0f\u6881\u4e0d\u7981\u9677\u5165\u4e86\u6c89\u601d…<\/p>\n
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\u5c0f\u6881\u7a81\u7136\u60f3\u8d77\u4e86\u4e24\u5929\u524d\u5c0f\u5f20\u540c\u5b66\u7ed9\u4ed6\u5b89\u5229\u7684\u4e00\u4e2a\u5e93\uff0c\u53ebrequests<\/strong>\uff0c\u6bd4\u90a3urllib,urllib2,urllib3,urllibn…\u4e0d\u77e5\u9ad8\u5230\u54ea\u91cc\u53bb\u4e86\uff01\u5c0f\u6881\u5174\u81f4\u52c3\u52c3\u5730\u4fee\u6539\u7a0b\u5e8f\uff0c\u7528requests\u4ee3\u66ff\u4e86\u6807\u51c6\u5e93urllib\u3002
\n <\/p>\n
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import<\/span> requests<\/span>\r\nfrom<\/span> lxml<\/span> import<\/span> etree<\/span>\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\n\r\ndef<\/span> fetch_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> requests<\/span>.<\/span>get<\/span>(<\/span>url<\/span>)<\/span>\r\n    return<\/span> response<\/span>\r\n\r\ndef<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n    page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n    html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n\r\n    xpath_movie<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/ol\/li'<\/span>\r\n    xpath_title<\/span> =<\/span> '.\/\/span[@class=\"title\"]'<\/span>\r\n    xpath_pages<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/div[2]\/a'<\/span>\r\n\r\n    pages<\/span> =<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_pages<\/span>)<\/span>\r\n    fetch_list<\/span> =<\/span> []<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> p<\/span> in<\/span> pages<\/span>:<\/span>\r\n        fetch_list<\/span>.<\/span>append<\/span>(<\/span>url<\/span> +<\/span> p<\/span>.<\/span>get<\/span>(<\/span>'href'<\/span>))<\/span>\r\n\r\n    for<\/span> url<\/span> in<\/span> fetch_list<\/span>:<\/span>\r\n        response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n        page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n        html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n        for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n            result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> movie<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> movie<\/span>.<\/span>find<\/span>(<\/span>xpath_title<\/span>)<\/span>.<\/span>text<\/span>\r\n        # print(i, title)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u7ed3\u679c\u4e00\u6d4b\uff0c6.5\u79d2\uff01\u867d\u7136\u6bd4\u7528urllib\u5feb\u4e861\u79d2\u591a\uff0c\u4f46\u662f\u603b\u4f53\u6765\u8bf4\uff0c\u4ed6\u4eec\u57fa\u672c\u8fd8\u662f\u5904\u4e8e\u540c\u4e00\u6c34\u5e73\u7ebf\u7684\uff0c\u7a0b\u5e8f\u5e76\u6ca1\u6709\u5feb\u5f88\u591a\uff0c\u8fd9\u4e00\u70b9\u7684\u5dee\u8ddd\u6216\u8bb8\u662frequests\u5bf9\u8bf7\u6c42\u505a\u4e86\u4f18\u5316\u5bfc\u81f4\u7684\u3002<\/p>\n
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python movie_requests.py\r\nCost 6.540304231643677 seconds\r\n<\/code><\/pre>\n<\/div>\n
\u5c0f\u6881\u4e0d\u7981\u6697\u60f3\uff1a\u662f\u6211\u7684\u7a0b\u5e8f\u5199\u7684\u592a\u632b\u4e86\u5417\uff1f\u4f1a\u4e0d\u4f1a\u662flxml\u8fd9\u4e2a\u5e93\u89e3\u6790\u7684\u901f\u5ea6\u592a\u6162\u4e86\uff0c\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u4f1a\u4e0d\u4f1a\u597d\u4e00\u4e9b\uff1f<\/p>\n
\u4e8e\u662f\u5c0f\u6881\u628alxml\u5e93\u6362\u6210\u4e86\u6807\u51c6\u7684re\u5e93\u3002<\/p>\n
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#-*- coding:utf-8 -*-<\/span>\r\nimport<\/span> requests<\/span>\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nimport<\/span> re<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\n\r\ndef<\/span> fetch_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> requests<\/span>.<\/span>get<\/span>(<\/span>url<\/span>)<\/span>\r\n    return<\/span> response<\/span>\r\n\r\ndef<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n    page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n    \r\n    fetch_list<\/span> =<\/span> set<\/span>()<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> title<\/span> in<\/span> re<\/span>.<\/span>findall<\/span>(<\/span>rb<\/span>'<a href=.*\\s.*<span class=\"title\">(.*)<\/span>'<\/span>,<\/span> page<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>title<\/span>)<\/span>\r\n\r\n    for<\/span> postfix<\/span> in<\/span> re<\/span>.<\/span>findall<\/span>(<\/span>rb<\/span>'<a href=\"(\\?start=.*?)\"'<\/span>,<\/span> page<\/span>):<\/span>\r\n        fetch_list<\/span>.<\/span>add<\/span>(<\/span>url<\/span> +<\/span> postfix<\/span>.<\/span>decode<\/span>())<\/span>\r\n\r\n    for<\/span> url<\/span> in<\/span> fetch_list<\/span>:<\/span>\r\n        response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n        page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n        for<\/span> title<\/span> in<\/span> re<\/span>.<\/span>findall<\/span>(<\/span>rb<\/span>'<a href=.*\\s.*<span class=\"title\">(.*)<\/span>'<\/span>,<\/span> page<\/span>):<\/span>\r\n            result<\/span>.<\/span>append<\/span>(<\/span>title<\/span>)<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> title<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> title<\/span>.<\/span>decode<\/span>()<\/span>\r\n        # print(i, title)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u518d\u4e00\u8dd1\uff0c\u54a6\uff0c\u53c8\u8db3\u8db3\u63d0\u5347\u4e86\u5c06\u8fd1\u4e00\u79d2\uff01<\/p>\n
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python movie_regex.py\r\nCost 5.578997182846069 seconds\r\n<\/code><\/pre>\n<\/div>\n
\u5c0f\u6881\u5fc3\u91cc\u6697\u723d\uff0c\u7a0b\u5e8f\u53d8\u5f97\u66f4\u77ed\u4e86\uff0c\u8fd0\u884c\u5f97\u4e5f\u66f4\u5feb\u4e86\uff0c\u611f\u89c9\u79bb\u6210\u529f\u8d8a\u6765\u8d8a\u8fd1\u4e86\uff0c\u4f46\u5c0f\u6881\u7709\u5934\u4e00\u76b1\uff0c\u5f88\u5feb\u5730\u610f\u8bc6\u5230\u4e86\u4e00\u4e2a\u95ee\u9898\uff0c\u8fd9\u6837\u5199\u51fa\u6765\u7684\u7a0b\u5e8f\u867d\u7136\u770b\u8d77\u6765\u66f4\u77ed\u4e86\uff0c\u4f46\u6240\u505a\u7684\u90fd\u662f\u5728\u76f2\u76ee\u5730\u6c42\u5feb<\/strong>\uff0c\u4f46\u5b8c\u5168\u6ca1\u6709\u6269\u5c55\u6027<\/strong>\u53ef\u8a00\uff01\u867d\u7136\u8fd9\u6837\u505a\u53ef\u4ee5\u6ee1\u8db3\u666e\u901a\u7684\u9700\u6c42\u573a\u666f\uff0c\u4f46\u5f53\u7a0b\u5e8f\u903b\u8f91\u53d8\u590d\u6742\u65f6\uff0c\u4f9d\u8d56\u539f\u751f\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7a0b\u5e8f\u4f1a\u66f4\u52a0\u96be\u4ee5\u7ef4\u62a4\uff01\u501f\u52a9\u4e00\u4e9b\u4e13\u95e8\u505a\u8fd9\u4e9b\u4e8b\u60c5\u7684\u89e3\u6790\u5e93\uff0c\u624d\u80fd\u4f7f\u7a0b\u5e8f\u53d8\u5f97\u6e05\u6670\u3002\u5176\u6b21\uff0c\u8fd9\u79cd\u7f51\u7edc\u5e94\u7528\u901a\u5e38\u74f6\u9888\u90fd\u5728IO\u5c42\u9762\uff0c\u89e3\u51b3\u7b49\u5f85\u8bfb\u5199\u7684\u95ee\u9898\u6bd4\u63d0\u9ad8\u6587\u672c\u89e3\u6790\u901f\u5ea6\u6765\u7684\u66f4\u6709\u6027\u4ef7\u6bd4\uff01\u5c0f\u6881\u60f3\u8d77\u4e86\u6628\u5929\u4e0a\u64cd\u4f5c\u7cfb\u7edf\u8bfe\u65f6\u8001\u5e08\u8bb2\u7684\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u6982\u5ff5\uff0c\u6b63\u597d\u7528\u4ed6\u4eec\u6765\u89e3\u51b3\u5b9e\u9645\u95ee\u9898\u3002<\/p>\n
<\/figure>\n
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#-*- coding:utf-8 -*-<\/span>\r\nimport<\/span> requests<\/span>\r\nfrom<\/span> lxml<\/span> import<\/span> etree<\/span>\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nfrom<\/span> threading<\/span> import<\/span> Thread<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\n\r\ndef<\/span> fetch_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> requests<\/span>.<\/span>get<\/span>(<\/span>url<\/span>)<\/span>\r\n    return<\/span> response<\/span>\r\n\r\ndef<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n    page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n    html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n\r\n    xpath_movie<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/ol\/li'<\/span>\r\n    xpath_title<\/span> =<\/span> '.\/\/span[@class=\"title\"]'<\/span>\r\n    xpath_pages<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/div[2]\/a'<\/span>\r\n\r\n    pages<\/span> =<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_pages<\/span>)<\/span>\r\n    fetch_list<\/span> =<\/span> []<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> p<\/span> in<\/span> pages<\/span>:<\/span>\r\n        fetch_list<\/span>.<\/span>append<\/span>(<\/span>url<\/span> +<\/span> p<\/span>.<\/span>get<\/span>(<\/span>'href'<\/span>))<\/span>\r\n\r\n    def<\/span> fetch_content<\/span>(<\/span>url<\/span>):<\/span>\r\n        response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n        page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n        html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n        for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n            result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    threads<\/span> =<\/span> []<\/span>\r\n    for<\/span> url<\/span> in<\/span> fetch_list<\/span>:<\/span>\r\n        t<\/span> =<\/span> Thread<\/span>(<\/span>target<\/span>=<\/span>fetch_content<\/span>,<\/span> args<\/span>=<\/span>[<\/span>url<\/span>])<\/span>\r\n        t<\/span>.<\/span>start<\/span>()<\/span>\r\n        threads<\/span>.<\/span>append<\/span>(<\/span>t<\/span>)<\/span>\r\n\r\n    for<\/span> t<\/span> in<\/span> threads<\/span>:<\/span>\r\n        t<\/span>.<\/span>join<\/span>()<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> movie<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> movie<\/span>.<\/span>find<\/span>(<\/span>xpath_title<\/span>)<\/span>.<\/span>text<\/span>\r\n        # print(i, title)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u6548\u679c\u679c\u7136\u7acb\u7aff\u89c1\u5f71\uff01\u591a\u7ebf\u7a0b\u6709\u6548\u7684\u89e3\u51b3\u4e86\u963b\u585e\u7b49\u5f85\u7684\u95ee\u9898\uff0c\u8fd9\u4e2a\u7a0b\u5e8f\u8db3\u8db3\u6bd4\u4e4b\u524d\u7684\u7a0b\u5e8f\u5feb\u4e8680%\uff01\u53ea\u9700\u89811.4\u79d2\u5c31\u53ef\u5b8c\u6210\u7535\u5f71\u5217\u8868\u7684\u6293\u53d6\u3002<\/p>\n
\n
python movie_multithread.py\r\nCost 1.451986598968506 seconds\r\n<\/code><\/pre>\n<\/div>\n
\u4f46\u5c0f\u6881\u8fd8\u662f\u89c9\u5f97\u4e0d\u591f\u8fc7\u763e\uff0c\u65e2\u7136Python\u7684\u591a\u7ebf\u7a0b\u4e5f\u53d7\u5236\u4e8eGIL\uff0c\u4e3a\u4ec0\u4e48\u6211\u4e0d\u7528\u591a\u8fdb\u7a0b\u5462\uff1f\u4e8e\u662f\u8bdd\u4e0d\u591a\u8bf4\u53c8\u64b8\u51fa\u4e86\u4e00\u4e2a\u57fa\u4e8e\u591a\u8fdb\u7a0b\u7684\u7248\u672c\u3002\u75284\u4e2a\u8fdb\u7a0b\u7684\u8fdb\u7a0b\u6c60\u6765\u5e76\u884c\u5904\u7406\u7f51\u7edc\u6570\u636e\u3002<\/p>\n
\n
#-*- coding:utf-8 -*-<\/span>\r\nimport<\/span> requests<\/span>\r\nfrom<\/span> lxml<\/span> import<\/span> etree<\/span>\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nfrom<\/span> concurrent.futures<\/span> import<\/span> ProcessPoolExecutor<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\n\r\ndef<\/span> fetch_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> requests<\/span>.<\/span>get<\/span>(<\/span>url<\/span>)<\/span>\r\n    return<\/span> response<\/span>\r\n\r\ndef<\/span> fetch_content<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n    page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n    return<\/span> page<\/span>\r\n\r\ndef<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    page<\/span> =<\/span> fetch_content<\/span>(<\/span>url<\/span>)<\/span>\r\n    html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n\r\n    xpath_movie<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/ol\/li'<\/span>\r\n    xpath_title<\/span> =<\/span> '.\/\/span[@class=\"title\"]'<\/span>\r\n    xpath_pages<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/div[2]\/a'<\/span>\r\n\r\n    pages<\/span> =<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_pages<\/span>)<\/span>\r\n    fetch_list<\/span> =<\/span> []<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> p<\/span> in<\/span> pages<\/span>:<\/span>\r\n        fetch_list<\/span>.<\/span>append<\/span>(<\/span>url<\/span> +<\/span> p<\/span>.<\/span>get<\/span>(<\/span>'href'<\/span>))<\/span>\r\n\r\n    with<\/span> ProcessPoolExecutor<\/span>(<\/span>max_workers<\/span>=<\/span>4<\/span>)<\/span> as<\/span> executor<\/span>:<\/span>\r\n        for<\/span> page<\/span> in<\/span> executor<\/span>.<\/span>map<\/span>(<\/span>fetch_content<\/span>,<\/span> fetch_list<\/span>):<\/span>\r\n            html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n            for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n                result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> movie<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> movie<\/span>.<\/span>find<\/span>(<\/span>xpath_title<\/span>)<\/span>.<\/span>text<\/span>\r\n        # print(i, title)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u7ed3\u679c\u662f2\u79d2\uff0c\u751a\u81f3\u8fd8\u4e0d\u5982\u591a\u7ebf\u7a0b\u7684\u7248\u672c\u3002<\/p>\n
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python movie_multiprocess.py\r\nCost 2.029435634613037 seconds\r\n<\/code><\/pre>\n<\/div>\n
(\u6ce8\uff1aThreadPoolExecutor\u548cProcessPoolExecutor\u662fPython3.2\u4e4b\u540e\u5f15\u5165\u7684\u5206\u522b\u5bf9\u7ebf\u7a0b\u6c60\u548c\u8fdb\u7a0b\u6c60\u7684\u4e00\u4e2a\u5c01\u88c5\uff0c\u5982\u679c\u4f7f\u7528Python2.x\uff0c\u9700\u8981\u5b89\u88c5futures<\/b>\u8fd9\u4e2a\u5e93\u624d\u80fd\u4f7f\u7528\u5b83\u4eec\u3002)<\/em>\u5c0f\u6881\u7acb\u9a6c\u5c31\u50bb\u773c\u4e86\uff0c\u8fd9\u8ddf\u4ed6\u7684\u9884\u671f\u5b8c\u5168\u4e0d\u7b26\u5408\u554a\u3002<\/p>\n
<\/figure>\n
\u591a\u8fdb\u7a0b\u5e26\u6765\u7684\u4f18\u70b9\uff08cpu\u5904\u7406\uff09\u5e76\u6ca1\u6709\u5f97\u5230\u4f53\u73b0\uff0c\u53cd\u800c\u521b\u5efa\u548c\u8c03\u5ea6\u8fdb\u7a0b\u5e26\u6765\u7684\u5f00\u9500\u8981\u8fdc\u8d85\u51fa\u5b83\u7684\u6b63\u9762\u6548\u5e94<\/strong>\uff0c\u62d6\u4e86\u4e00\u628a\u540e\u817f\u3002\u5373\u4fbf\u5982\u6b64\uff0c\u591a\u8fdb\u7a0b\u5e26\u6765\u7684\u6548\u76ca\u76f8\u6bd4\u4e8e\u4e4b\u524d\u5355\u8fdb\u7a0b\u5355\u7ebf\u7a0b\u7684\u6a21\u578b\u8981\u597d\u5f97\u591a\u3002<\/p>\n
<\/figure>\n
\u6b63\u5f53\u5c0f\u6881\u5728\u82e6\u82e6\u601d\u7d22\u8fd8\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\u65f6\uff0c\u4ed6\u65e0\u610f\u4e2d\u770b\u5230\u4e00\u7bc7\u6587\u7ae0\uff0c\u91cc\u9762\u63d0\u5230\u4e86\u534f\u7a0b\u76f8\u6bd4\u4e8e\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u7684\u4f18\u70b9\uff08\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u9664\u4e86\u521b\u5efa\u7684\u5f00\u9500\u5927\u4e4b\u5916\u8fd8\u6709\u4e00\u4e2a\u96be\u4ee5\u6839\u6cbb\u7684\u7f3a\u9677\uff0c\u5c31\u662f\u5904\u7406\u8fdb\u7a0b\u4e4b\u95f4\u6216\u7ebf\u7a0b\u4e4b\u95f4\u7684\u534f\u4f5c\u95ee\u9898\uff0c\u56e0\u4e3a\u662f\u4f9d\u8d56\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u7684\u7a0b\u5e8f\u5728\u4e0d\u52a0\u9501\u7684\u60c5\u51b5\u4e0b\u901a\u5e38\u662f\u4e0d\u53ef\u63a7\u7684\uff0c\u800c\u534f\u7a0b\u5219\u53ef\u4ee5\u5b8c\u7f8e\u5730\u89e3\u51b3\u534f\u4f5c\u95ee\u9898\uff0c\u7531\u7528\u6237\u6765\u51b3\u5b9a\u534f\u7a0b\u4e4b\u95f4\u7684\u8c03\u5ea6\u3002<\/em><\/strong>\uff09\uff0c\u5c0f\u6881\u6298\u817e\u8d77\u6765\u4e5f\u662f\u4e0d\u7518\u4eba\u540e\u554a\uff0c\u4ed6\u641c\u7d22\u4e86\u4e00\u4e9b\u8d44\u6599\uff0c\u601d\u8003\u5982\u4f55\u7528\u534f\u7a0b\u6765\u52a0\u5f3a\u81ea\u5df1\u7684\u7a0b\u5e8f\u3002<\/p>\n
\u5f88\u5feb\uff0c\u5c0f\u6881\u5c31\u53d1\u73b0\u4e86\u4e00\u4e2a\u57fa\u4e8e\u534f\u7a0b\u7684\u7f51\u7edc\u5e93\uff0c\u53eb\u505agevent\uff0c\u800c\u4e14\u66f4\u723d\u7684\u662f\uff0c\u542c\u8bf4\u7528\u4e86gevent\u7684\u7334\u5b50\u8865\u4e01\u540e\uff0c\u6574\u4e2a\u7a0b\u5e8f\u5c31\u4f1a\u53d8\u6210\u5f02\u6b65\u7684\u4e86\uff01<\/p>\n
<\/figure>\n
\u771f\u7684\u6709\u90a3\u4e48\u795e\u5947\u5417\uff1f\u5c0f\u6881\u8feb\u4e0d\u53ca\u5f85\u5730\u8981\u770b\u770b\u8fd9\u5230\u5e95\u662f\u4ec0\u4e48\u9ed1\u79d1\u6280\uff01\u9a6c\u4e0a\u5199\u51fa\u4e86\u57fa\u4e8egevent\u7684\u6817\u5b50\uff1a<\/p>\n
\n
#-*- coding:utf-8 -*-<\/span>\r\nimport<\/span> requests<\/span>\r\nfrom<\/span> lxml<\/span> import<\/span> etree<\/span>\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nimport<\/span> gevent<\/span>\r\nfrom<\/span> gevent<\/span> import<\/span> monkey<\/span>\r\nmonkey<\/span>.<\/span>patch_all<\/span>()<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\n\r\ndef<\/span> fetch_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> requests<\/span>.<\/span>get<\/span>(<\/span>url<\/span>)<\/span>\r\n    return<\/span> response<\/span>\r\n\r\ndef<\/span> fetch_content<\/span>(<\/span>url<\/span>):<\/span>\r\n    response<\/span> =<\/span> fetch_page<\/span>(<\/span>url<\/span>)<\/span>\r\n    page<\/span> =<\/span> response<\/span>.<\/span>content<\/span>\r\n    return<\/span> page<\/span>\r\n\r\ndef<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    page<\/span> =<\/span> fetch_content<\/span>(<\/span>url<\/span>)<\/span>\r\n    html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n\r\n    xpath_movie<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/ol\/li'<\/span>\r\n    xpath_title<\/span> =<\/span> '.\/\/span[@class=\"title\"]'<\/span>\r\n    xpath_pages<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/div[2]\/a'<\/span>\r\n\r\n    pages<\/span> =<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_pages<\/span>)<\/span>\r\n    fetch_list<\/span> =<\/span> []<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> p<\/span> in<\/span> pages<\/span>:<\/span>\r\n        fetch_list<\/span>.<\/span>append<\/span>(<\/span>url<\/span> +<\/span> p<\/span>.<\/span>get<\/span>(<\/span>'href'<\/span>))<\/span>\r\n\r\n    jobs<\/span> =<\/span> [<\/span>gevent<\/span>.<\/span>spawn<\/span>(<\/span>fetch_content<\/span>,<\/span> url<\/span>)<\/span> for<\/span> url<\/span> in<\/span> fetch_list<\/span>]<\/span>\r\n    gevent<\/span>.<\/span>joinall<\/span>(<\/span>jobs<\/span>)<\/span>\r\n    [<\/span>job<\/span>.<\/span>value<\/span> for<\/span> job<\/span> in<\/span> jobs<\/span>]<\/span>\r\n\r\n    for<\/span> page<\/span> in<\/span> [<\/span>job<\/span>.<\/span>value<\/span> for<\/span> job<\/span> in<\/span> jobs<\/span>]:<\/span>\r\n        html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n        for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n            result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> movie<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> movie<\/span>.<\/span>find<\/span>(<\/span>xpath_title<\/span>)<\/span>.<\/span>text<\/span>\r\n        # print(i, title)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u53ea\u67091.2\u79d2\uff0c\u679c\u7136\u5f88\u5feb\uff01\u800c\u4e14\u6211\u4eec\u770b\u6574\u4e2a\u7a0b\u5e8f\uff0c\u51e0\u4e4e\u770b\u4e0d\u5230\u6709\u5f02\u6b65\u5904\u7406\u7684\u5f71\u5b50\uff0cgevent\u7ed9\u4e88\u4e86\u6211\u4eec\u4e00\u79cd\u4ee5\u540c\u6b65\u903b\u8f91\u6765\u4e66\u5199\u5f02\u6b65\u7a0b\u5e8f\u7684\u80fd\u529b<\/strong>\uff0c\u770bmonkey.patch_all()\u8fd9\u6bb5\u4ee3\u7801\uff0c\u5b83\u662f\u6574\u4e2a\u7a0b\u5e8f\u5b9e\u73b0\u5f02\u6b65\u7684\u9ed1\u79d1\u6280\uff0c\u5f53\u6211\u4eec\u7ed9\u7a0b\u5e8f\u6253\u4e86\u7334\u5b50\u8865\u4e01\u540e\uff0cPython\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u4f1a\u52a8\u6001\u5730\u5c06\u4e00\u4e9b\u7f51\u7edc\u5e93\uff08\u4f8b\u5982socket\uff0cthread\uff09\u66ff\u6362\u6389\uff0c\u53d8\u6210\u5f02\u6b65\u7684\u5e93\u3002\u4f7f\u5f97\u7a0b\u5e8f\u5728\u8fdb\u884c\u7f51\u7edc\u64cd\u4f5c\u7684\u65f6\u5019\u90fd\u53d8\u6210\u5f02\u6b65\u7684\u65b9\u5f0f\u53bb\u5de5\u4f5c\uff0c\u6548\u7387\u5c31\u81ea\u7136\u63d0\u5347\u5f88\u591a\u4e86\u3002<\/p>\n
\n
python movie_gevent.py\r\nCost 1.2647549629211425 seconds\r\n<\/code><\/pre>\n<\/div>\n
\u867d\u7136\u7a0b\u5e8f\u53d8\u5f97\u5f88\u5feb\u4e86\uff0c\u4f46\u5c0f\u6881\u6574\u4e2a\u4eba\u90fd\u662f\u61f5\u903c\u7684\u554a\uff0cgevent\u7684\u9b54\u672f\u7ed9\u4ed6\u5e26\u6765\u4e86\u4e00\u5b9a\u7684\u56f0\u60d1\uff0c\u800c\u4e14\u4ed6\u89c9\u5f97gevent\u8fd9\u73a9\u610f\u5b9e\u5728\u4e0d\u597d\u5b66\uff0c\u8ddf\u4ed6\u5fc3\u76ee\u4e2dPythonic\u7684\u6e05\u6670\u4f18\u96c5\u8fd8\u662f\u6709\u8ddd\u79bb\u7684\u3002Python\u793e\u533a\u4e5f\u610f\u8bc6\u5230Python\u9700\u8981\u4e00\u4e2a\u72ec\u7acb\u7684\u6807\u51c6\u5e93\u6765\u652f\u6301\u534f\u7a0b\uff0c\u4e8e\u662f\u5c31\u6709\u4e86\u540e\u6765\u7684asyncio\u3002<\/p>\n
\u5c0f\u6881\u628a\u540c\u6b65\u7684requests\u5e93\u6539\u6210\u4e86\u652f\u6301asyncio\u7684aiohttp\u5e93\uff0c\u4f7f\u75283.5\u7684async\/await\u8bed\u6cd5\uff083.5\u4e4b\u524d\u7528@asyncio.coroutine\u548cyield from\u4ee3\u66ff<\/em>\uff09\u5199\u51fa\u4e86\u534f\u7a0b\u7248\u672c\u7684\u4f8b\u5b50\u3002<\/p>\n
\n
#-*- coding:utf-8 -*-<\/span>\r\nfrom<\/span> lxml<\/span> import<\/span> etree<\/span>\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nimport<\/span> asyncio<\/span>\r\nimport<\/span> aiohttp<\/span>\r\n\r\nurl<\/span> =<\/span> 'https:\/\/movie.douban.com\/top250'<\/span>\r\n\r\nasync<\/span> def<\/span> fetch_content<\/span>(<\/span>url<\/span>):<\/span>\r\n    async<\/span> with<\/span> aiohttp<\/span>.<\/span>ClientSession<\/span>()<\/span> as<\/span> session<\/span>:<\/span>\r\n        async<\/span> with<\/span> session<\/span>.<\/span>get<\/span>(<\/span>url<\/span>)<\/span> as<\/span> response<\/span>:<\/span>\r\n            return<\/span> await<\/span> response<\/span>.<\/span>text<\/span>()<\/span>\r\n\r\nasync<\/span> def<\/span> parse<\/span>(<\/span>url<\/span>):<\/span>\r\n    page<\/span> =<\/span> await<\/span> fetch_content<\/span>(<\/span>url<\/span>)<\/span>\r\n    html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n\r\n    xpath_movie<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/ol\/li'<\/span>\r\n    xpath_title<\/span> =<\/span> '.\/\/span[@class=\"title\"]'<\/span>\r\n    xpath_pages<\/span> =<\/span> '\/\/*[@id=\"content\"]\/div\/div[1]\/div[2]\/a'<\/span>\r\n\r\n    pages<\/span> =<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_pages<\/span>)<\/span>\r\n    fetch_list<\/span> =<\/span> []<\/span>\r\n    result<\/span> =<\/span> []<\/span>\r\n\r\n    for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n        result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> p<\/span> in<\/span> pages<\/span>:<\/span>\r\n        fetch_list<\/span>.<\/span>append<\/span>(<\/span>url<\/span> +<\/span> p<\/span>.<\/span>get<\/span>(<\/span>'href'<\/span>))<\/span>\r\n\r\n    tasks<\/span> =<\/span> [<\/span>fetch_content<\/span>(<\/span>url<\/span>)<\/span> for<\/span> url<\/span> in<\/span> fetch_list<\/span>]<\/span>\r\n    pages<\/span> =<\/span> await<\/span> asyncio<\/span>.<\/span>gather<\/span>(<\/span>*<\/span>tasks<\/span>)<\/span>\r\n\r\n    for<\/span> page<\/span> in<\/span> pages<\/span>:<\/span>\r\n        html<\/span> =<\/span> etree<\/span>.<\/span>HTML<\/span>(<\/span>page<\/span>)<\/span>\r\n        for<\/span> element_movie<\/span> in<\/span> html<\/span>.<\/span>xpath<\/span>(<\/span>xpath_movie<\/span>):<\/span>\r\n            result<\/span>.<\/span>append<\/span>(<\/span>element_movie<\/span>)<\/span>\r\n\r\n    for<\/span> i<\/span>,<\/span> movie<\/span> in<\/span> enumerate<\/span>(<\/span>result<\/span>,<\/span> 1<\/span>):<\/span>\r\n        title<\/span> =<\/span> movie<\/span>.<\/span>find<\/span>(<\/span>xpath_title<\/span>)<\/span>.<\/span>text<\/span>\r\n        # print(i, title)<\/span>\r\n\r\n\r\ndef<\/span> main<\/span>():<\/span>\r\n    loop<\/span> =<\/span> asyncio<\/span>.<\/span>get_event_loop<\/span>()<\/span>    \r\n    start<\/span> =<\/span> time<\/span>()<\/span>    \r\n    for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>5<\/span>):<\/span>\r\n        loop<\/span>.<\/span>run_until_complete<\/span>(<\/span>parse<\/span>(<\/span>url<\/span>))<\/span>\r\n    end<\/span> =<\/span> time<\/span>()<\/span>\r\n    print<\/span> (<\/span>'Cost {} seconds'<\/span>.<\/span>format<\/span>((<\/span>end<\/span> -<\/span> start<\/span>)<\/span> \/<\/span> 5<\/span>))<\/span>\r\n    loop<\/span>.<\/span>close<\/span>()<\/span>\r\n<\/code><\/pre>\n<\/div>\n
1.7\u79d2\uff0c\u4e5f\u4e0d\u9519\u3002\u800c\u4e14\u7528\u4e0a\u4e86async\/await\u8bed\u6cd5\u4f7f\u5f97\u7a0b\u5e8f\u7684\u53ef\u8bfb\u6027\u63d0\u9ad8\u4e86\u4e0d\u5c11\u3002<\/p>\n
\n
python movie_asyncio.py\r\nCost 1.713043785095215 seconds\r\n<\/code><\/pre>\n<\/div>\n
\u7ecf\u8fc7\u4e00\u756a\u6d17\u793c\u540e\uff0c\u5c0f\u6881\u5bf9\u5f02\u6b65\u6709\u4e86\u66f4\u52a0\u6df1\u523b\u7684\u8ba4\u8bc6\u3002\u5f02\u6b65\u65b9\u5f0f\u6709\u5f88\u591a\uff0c\u8fd9\u91cc\u5217\u51fa\u4e86\u6bd4\u8f83\u5e38\u89c1\u7684\u51e0\u79cd\uff0c\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u5e94\u8be5\u6839\u636e\u4f7f\u7528\u573a\u666f\u6765\u6311\u9009\u6700\u5408\u9002\u7684\u5e94\u7528\u65b9\u6848\uff0c\u5f71\u54cd\u7a0b\u5e8f\u6548\u7387\u7684\u56e0\u7d20\u6709\u5f88\u591a\uff0c\u4ee5\u4e0a\u4e0d\u540c\u7684\u5f02\u6b65\u65b9\u5f0f\u5728\u4e0d\u540c\u7684\u573a\u666f\u4e0b\u4e5f\u4f1a\u6709\u4e0d\u4e00\u6837\u7684\u8868\u73b0\uff0c\u4e0d\u8981\u62b1\u6b7b\u5728\u4e00\u4e2a\u5927\u6811\u4e0a\uff0c\u8be5\u7528\u540c\u6b65\u7684\u5730\u65b9\u7528\u540c\u6b65\uff0c\u8be5\u7528\u5f02\u6b65\u7684\u5730\u65b9\u5f02\u6b65\uff0c\u8fd9\u6837\u624d\u80fd\u6784\u5efa\u51fa\u66f4\u52a0\u7075\u6d3b\u7684\u7f51\u7edc\u5e94\u7528\u3002<\/p>\n
\u8bf4\u5230\u8fd9\u91cc\u4f60\u4f30\u8ba1\u4e5f\u660e\u767d\u4e86\uff0c\u6e05\u6670\u4f18\u96c5\u7684\u534f\u7a0b\u53ef\u4ee5\u8bf4\u5b9e\u73b0\u5f02\u6b65\u7684\u6700\u4f18\u65b9\u6848\u4e4b\u4e00<\/b>\u3002<\/p>\n
\u534f\u7a0b\u7684\u673a\u5236\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u7528\u540c\u6b65\u7684\u65b9\u5f0f\u5199\u51fa\u5f02\u6b65\u8fd0\u884c\u7684\u4ee3\u7801\u3002<\/p>\n
\u603b\u6240\u5468\u77e5\uff0cPython\u56e0\u4e3a\u6709GIL\uff08\u5168\u5c40\u89e3\u91ca\u9501\uff09\u8fd9\u73a9\u610f\uff0c\u4e0d\u53ef\u80fd\u6709\u771f\u6b63\u7684\u591a\u7ebf\u7a0b\u7684\u5b58\u5728\uff0c\u56e0\u6b64\u5f88\u591a\u60c5\u51b5\u4e0b\u90fd\u4f1a\u7528multiprocessing\u5b9e\u73b0\u5e76\u53d1\uff0c\u800c\u4e14\u5728Python\u4e2d\u5e94\u7528\u591a\u7ebf\u7a0b\u8fd8\u8981\u6ce8\u610f\u5173\u952e\u5730\u65b9\u7684\u540c\u6b65\uff0c\u4e0d\u592a\u65b9\u4fbf\uff0c\u7528\u534f\u7a0b\u4ee3\u66ff\u591a\u7ebf\u7a0b\u548c\u591a\u8fdb\u7a0b\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\uff0c\u56e0\u4e3a\u5b83\u5438\u5f15\u4eba\u7684\u7279\u6027\uff1a\u4e3b\u52a8\u8c03\u7528\/\u9000\u51fa\uff0c\u72b6\u6001\u4fdd\u5b58\uff0c\u907f\u514dcpu\u4e0a\u4e0b\u6587\u5207\u6362<\/em>\u7b49\u2026<\/p>\n
\u4ec0\u4e48\u662f\u534f\u7a0b\uff1f<\/h2>\n
\u534f\u7a0b\uff0c\u53c8\u79f0\u4f5cCoroutine<\/strong>\u3002\u4ece\u5b57\u9762\u4e0a\u6765\u7406\u89e3\uff0c\u5373\u534f\u540c\u8fd0\u884c\u7684\u4f8b\u7a0b\uff0c\u5b83\u662f\u6bd4\u662f\u7ebf\u7a0b\uff08thread\uff09\u66f4\u7ec6\u91cf\u7ea7\u7684\u7528\u6237\u6001\u7ebf\u7a0b\uff0c\u7279\u70b9\u662f\u5141\u8bb8\u7528\u6237\u7684\u4e3b\u52a8\u8c03\u7528\u548c\u4e3b\u52a8\u9000\u51fa\uff0c\u6302\u8d77\u5f53\u524d\u7684\u4f8b\u7a0b\u7136\u540e\u8fd4\u56de\u503c\u6216\u53bb\u6267\u884c\u5176\u4ed6\u4efb\u52a1\uff0c\u63a5\u7740\u8fd4\u56de\u539f\u6765\u505c\u4e0b\u7684\u70b9\u7ee7\u7eed\u6267\u884c\u3002\u7b49\u4e0b\uff0c\u8fd9\u662f\u5426\u6709\u70b9\u5947\u602a\uff1f\u6211\u4eec\u90fd\u77e5\u9053\u4e00\u822c\u51fd\u6570\u90fd\u662f\u7ebf\u6027\u6267\u884c\u7684\uff0c\u4e0d\u53ef\u80fd\u8bf4\u6267\u884c\u5230\u4e00\u534a\u8fd4\u56de\uff0c\u7b49\u4f1a\u513f\u53c8\u8dd1\u5230\u539f\u6765\u7684\u5730\u65b9\u7ee7\u7eed\u6267\u884c\u3002\u4f46\u4e00\u4e9b\u719f\u6089python\uff08or\u5176\u4ed6\u52a8\u6001\u8bed\u8a00\uff09\u7684\u7ae5\u978b\u90fd\u77e5\u9053\u8fd9\u53ef\u4ee5\u505a\u5230\uff0c\u7b54\u6848\u662f\u7528yield\u8bed\u53e5\u3002\u5176\u5b9e\u8fd9\u91cc\u6211\u4eec\u8981\u611f\u8c22\u64cd\u4f5c\u7cfb\u7edf\uff08OS\uff09\u4e3a\u6211\u4eec\u505a\u7684\u5de5\u4f5c\uff0c\u56e0\u4e3a\u5b83\u5177\u6709getcontext\u548cswapcontext\u8fd9\u4e9b\u7279\u6027\uff0c\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u4e0a\u4e0b\u6587\u548c\u72b6\u6001\u4fdd\u5b58\u8d77\u6765\uff0c\u5207\u6362\u5230\u5176\u4ed6\u7684\u4e0a\u4e0b\u6587\uff0c\u8fd9\u4e9b\u7279\u6027\u4e3acoroutine\u7684\u5b9e\u73b0\u63d0\u4f9b\u4e86\u5e95\u5c42\u7684\u57fa\u7840\u3002\u64cd\u4f5c\u7cfb\u7edf\u7684Interrupts\u548cTraps\u673a\u5236\u5219\u4e3a\u8fd9\u79cd\u5b9e\u73b0\u63d0\u4f9b\u4e86\u53ef\u80fd\u6027\uff0c\u56e0\u6b64\u5b83\u770b\u8d77\u6765\u53ef\u80fd\u662f\u4e0b\u9762\u8fd9\u6837\u7684:<\/p>\n
<\/figure>\n
\u7406\u89e3\u751f\u6210\u5668\uff08generator\uff09<\/b><\/p>\n
\u5b66\u8fc7\u751f\u6210\u5668\u548c\u8fed\u4ee3\u5668\u7684\u540c\u5b66\u5e94\u8be5\u90fd\u77e5\u9053python\u6709yield\u8fd9\u4e2a\u5173\u952e\u5b57\uff0cyield\u80fd\u628a\u4e00\u4e2a\u51fd\u6570\u53d8\u6210\u4e00\u4e2agenerator\uff0c\u4e0ereturn\u4e0d\u540c\uff0cyield\u5728\u51fd\u6570\u4e2d\u8fd4\u56de\u503c\u65f6\u4f1a\u4fdd\u5b58\u51fd\u6570\u7684\u72b6\u6001\uff0c\u4f7f\u4e0b\u4e00\u6b21\u8c03\u7528\u51fd\u6570\u65f6\u4f1a\u4ece\u4e0a\u4e00\u6b21\u7684\u72b6\u6001\u7ee7\u7eed\u6267\u884c\uff0c\u5373\u4eceyield\u7684\u4e0b\u4e00\u6761\u8bed\u53e5\u5f00\u59cb\u6267\u884c\uff0c\u8fd9\u6837\u505a\u6709\u8bb8\u591a\u597d\u5904\uff0c\u6bd4\u5982\u6211\u4eec\u60f3\u8981\u751f\u6210\u4e00\u4e2a\u6570\u5217\uff0c\u82e5\u8be5\u6570\u5217\u7684\u5b58\u50a8\u7a7a\u95f4\u592a\u5927\uff0c\u800c\u6211\u4eec\u4ec5\u4ec5\u9700\u8981\u8bbf\u95ee\u524d\u9762\u51e0\u4e2a\u5143\u7d20\uff0c\u90a3\u4e48yield\u5c31\u6d3e\u4e0a\u7528\u573a\u4e86\uff0c\u5b83\u5b9e\u73b0\u4e86\u8fd9\u79cd\u4e00\u8fb9\u5faa\u73af\u4e00\u8fb9\u8ba1\u7b97\u7684\u673a\u5236\uff0c\u8282\u7701\u4e86\u5b58\u50a8\u7a7a\u95f4\uff0c\u63d0\u9ad8\u4e86\u8fd0\u884c\u6548\u7387\u3002<\/p>\n
\u8fd9\u91cc\u4ee5\u6590\u6ce2\u90a3\u5951\u6570\u5217\u4e3a\u4f8b\uff1a<\/p>\n
\n
def<\/span> fib<\/span>(<\/span>max<\/span>):<\/span>\r\n    n<\/span>,<\/span> a<\/span>,<\/span> b<\/span> =<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> 1<\/span>\r\n    while<\/span> n<\/span>  max<\/span>:<\/span>\r\n        print<\/span> b<\/span>\r\n        a<\/span>,<\/span> b<\/span> =<\/span> b<\/span>,<\/span> a<\/span> +<\/span> b<\/span>\r\n        n<\/span> =<\/span> n<\/span> +<\/span> 1<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u5982\u679c\u4f7f\u7528\u4e0a\u8ff0\u7684\u7b97\u6cd5\uff0c\u90a3\u4e48\u6211\u6bcf\u4e00\u6b21\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u90fd\u8981\u8017\u8d39\u5927\u91cf\u65f6\u95f4\u5faa\u73af\u505a\u91cd\u590d\u7684\u4e8b\u60c5\u3002\u800c\u5982\u679c\u4f7f\u7528yield\u7684\u8bdd\uff0c\u5b83\u5219\u4f1a\u751f\u6210\u4e00\u4e2agenerator\uff0c\u5f53\u6211\u9700\u8981\u65f6\uff0c\u8c03\u7528\u5b83\u7684next\u65b9\u6cd5\u83b7\u5f97\u4e0b\u4e00\u4e2a\u503c\uff0c\u6539\u52a8\u7684\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u76f4\u63a5\u628aprint\u6539\u4e3ayield\u5c31OK\u3002<\/p>\n
\u751f\u4ea7\u8005\uff0d\u6d88\u8d39\u8005\u7684\u534f\u7a0b<\/b><\/p>\n
\n
#-*- coding:utf-8<\/span>\r\ndef<\/span> consumer<\/span>():<\/span>\r\n    status<\/span> =<\/span> True<\/span>\r\n    while<\/span> True<\/span>:<\/span>\r\n        n<\/span> =<\/span> yield<\/span> status<\/span>\r\n        print<\/span>(<\/span>\"\u6211\u62ff\u5230\u4e86{}!\"<\/span>.<\/span>format<\/span>(<\/span>n<\/span>))<\/span>\r\n        if<\/span> n<\/span> ==<\/span> 3<\/span>:<\/span>\r\n            status<\/span> =<\/span> False<\/span>\r\n\r\ndef<\/span> producer<\/span>(<\/span>consumer<\/span>):<\/span>\r\n    n<\/span> =<\/span> 5<\/span>\r\n    while<\/span> n<\/span> ><\/span> 0<\/span>:<\/span>\r\n    # yield\u7ed9\u4e3b\u7a0b\u5e8f\u8fd4\u56de\u6d88\u8d39\u8005\u7684\u72b6\u6001<\/span>\r\n        yield<\/span> consumer<\/span>.<\/span>send<\/span>(<\/span>n<\/span>)<\/span>\r\n        n<\/span> -=<\/span> 1<\/span>\r\n\r\nif<\/span> __name__<\/span> ==<\/span> '__main__'<\/span>:<\/span>\r\n    c<\/span> =<\/span> consumer<\/span>()<\/span>\r\n    c<\/span>.<\/span>send<\/span>(<\/span>None<\/span>)<\/span>\r\n    p<\/span> =<\/span> producer<\/span>(<\/span>c<\/span>)<\/span>\r\n    for<\/span> status<\/span> in<\/span> p<\/span>:<\/span>\r\n        if<\/span> status<\/span> ==<\/span> False<\/span>:<\/span>\r\n            print<\/span>(<\/span>\"\u6211\u53ea\u89813,4,5\u5c31\u884c\u5566\"<\/span>)<\/span>\r\n            break<\/span>\r\n    print<\/span>(<\/span>\"\u7a0b\u5e8f\u7ed3\u675f\"<\/span>)<\/span><\/code><\/pre>\n<\/div>\n
\u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u662f\u5178\u578b\u7684\u751f\u4ea7\u8005\uff0d\u6d88\u8d39\u8005\u95ee\u9898\uff0c\u6211\u4eec\u7528\u534f\u7a0b\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u5b83\u3002\u9996\u5148\u4ece\u4e3b\u7a0b\u5e8f\u4e2d\u5f00\u59cb\u770b\uff0c\u7b2c\u4e00\u53e5c = consumer()\uff0c\u56e0\u4e3aconsumer\u51fd\u6570\u4e2d\u5b58\u5728yield\u8bed\u53e5\uff0cpython\u4f1a\u628a\u5b83\u5f53\u6210\u4e00\u4e2agenerator\uff08\u751f\u6210\u5668\uff0c\u6ce8\u610f\uff1a\u751f\u6210\u5668\u548c\u534f\u7a0b\u7684\u6982\u5ff5\u533a\u522b\u5f88\u5927\uff0c\u5343\u4e07\u522b\u6df7\u6dc6\u4e86\u4e24\u8005\uff09\uff0c\u56e0\u6b64\u5728\u8fd0\u884c\u8fd9\u6761\u8bed\u53e5\u540e\uff0cpython\u5e76\u4e0d\u4f1a\u50cf\u6267\u884c\u51fd\u6570\u4e00\u6837\uff0c\u800c\u662f\u8fd4\u56de\u4e86\u4e00\u4e2agenerator object\u3002<\/p>\n
\u518d\u770b\u7b2c\u4e8c\u6761\u8bed\u53e5c.send(None)\uff0c\u8fd9\u6761\u8bed\u53e5\u7684\u4f5c\u7528\u662f\u5c06consumer\uff08\u5373\u53d8\u91cfc\uff0c\u5b83\u662f\u4e00\u4e2agenerator\uff09\u4e2d\u7684\u8bed\u53e5\u63a8\u8fdb\u5230\u7b2c\u4e00\u4e2ayield\u8bed\u53e5\u51fa\u73b0\u7684\u4f4d\u7f6e\uff0c\u90a3\u4e48\u5728\u4f8b\u5b50\u4e2d\uff0cconsumer\u4e2d\u7684status = True\u548cwhile True:\u90fd\u5df2\u7ecf\u88ab\u6267\u884c\u4e86\uff0c\u7a0b\u5e8f\u505c\u7559\u5728n = yield status\u7684\u4f4d\u7f6e\uff08\u6ce8\u610f\uff1a\u6b64\u65f6\u8fd9\u6761\u8bed\u53e5\u8fd8\u6ca1\u6709\u88ab\u6267\u884c\uff09\uff0c\u4e0a\u9762\u8bf4\u7684send(None)\u8bed\u53e5\u5341\u5206\u91cd\u8981\uff0c\u5982\u679c\u6f0f\u5199\u8fd9\u4e00\u53e5\uff0c\u90a3\u4e48\u7a0b\u5e8f\u76f4\u63a5\u62a5\u9519\uff0c\u8fd9\u4e2asend()\u65b9\u6cd5\u770b\u4e0a\u53bb\u4f3c\u4e4e\u633a\u795e\u5947\uff0c\u7b49\u4e0b\u518d\u8bb2\u5b83\u7684\u4f5c\u7528\u3002<\/p>\n
\u4e0b\u9762\u7b2c\u4e09\u53e5p = producer(c)\uff0c\u8fd9\u91cc\u5219\u50cf\u4e0a\u9762\u4e00\u6837\u5b9a\u4e49\u4e86producer\u7684\u751f\u6210\u5668\uff0c\u6ce8\u610f\u7684\u662f\u8fd9\u91cc\u6211\u4eec\u4f20\u5165\u4e86\u6d88\u8d39\u8005\u7684\u751f\u6210\u5668\uff0c\u6765\u8ba9producer\u8ddfconsumer\u901a\u4fe1\u3002<\/p>\n
\u7b2c\u56db\u53e5for status in p:\uff0c\u8fd9\u6761\u8bed\u53e5\u4f1a\u5faa\u73af\u5730\u8fd0\u884cproducer\u548c\u83b7\u53d6\u5b83yield\u56de\u6765\u7684\u72b6\u6001\u3002<\/p>\n
\u597d\u4e86\uff0c\u8fdb\u5165\u6b63\u9898\uff0c\u73b0\u5728\u6211\u4eec\u8981\u8ba9\u751f\u4ea7\u8005\u53d1\u90011,2,3,4,5\u7ed9\u6d88\u8d39\u8005\uff0c\u6d88\u8d39\u8005\u63a5\u53d7\u6570\u5b57\uff0c\u8fd4\u56de\u72b6\u6001\u7ed9\u751f\u4ea7\u8005\uff0c\u800c\u6211\u4eec\u7684\u6d88\u8d39\u8005\u53ea\u9700\u89813,4,5\u5c31\u884c\u4e86\uff0c\u5f53\u6570\u5b57\u7b49\u4e8e3\u65f6\uff0c\u4f1a\u8fd4\u56de\u4e00\u4e2a\u9519\u8bef\u7684\u72b6\u6001\u3002\u6700\u7ec8\u6211\u4eec\u9700\u8981\u7531\u4e3b\u7a0b\u5e8f\u6765\u76d1\u63a7\u751f\u4ea7\u8005\uff0d\u6d88\u8d39\u8005\u7684\u8fc7\u7a0b\u72b6\u6001\uff0c\u8c03\u5ea6\u7ed3\u675f\u7a0b\u5e8f\u3002<\/em><\/strong><\/p>\n
\u73b0\u5728\u7a0b\u5e8f\u6d41\u8fdb\u5165\u4e86producer\u91cc\u9762\uff0c\u6211\u4eec\u76f4\u63a5\u770byield consumer.send(n)\uff0c\u751f\u4ea7\u8005\u8c03\u7528\u4e86\u6d88\u8d39\u8005\u7684send()\u65b9\u6cd5\uff0c\u628an\u53d1\u9001\u7ed9consumer\uff08\u5373c\uff09\uff0c\u5728consumer\u4e2d\u7684n = yield status\uff0cn\u62ff\u5230\u7684\u662f\u6d88\u8d39\u8005\u53d1\u9001\u7684\u6570\u5b57\uff0c\u540c\u65f6\uff0cconsumer\u7528yield\u7684\u65b9\u5f0f\u628a\u72b6\u6001\uff08status\uff09\u8fd4\u56de\u7ed9\u6d88\u8d39\u8005\uff0c\u6ce8\u610f\uff1a\u8fd9\u65f6producer\uff08\u5373\u6d88\u8d39\u8005\uff09\u7684consumer.send()\u8c03\u7528\u8fd4\u56de\u7684\u5c31\u662fconsumer\u4e2dyield\u7684status\uff01\u6d88\u8d39\u8005\u9a6c\u4e0a\u5c06status\u8fd4\u56de\u7ed9\u8c03\u5ea6\u5b83\u7684\u4e3b\u7a0b\u5e8f\uff0c\u4e3b\u7a0b\u5e8f\u83b7\u53d6\u72b6\u6001\uff0c\u5224\u65ad\u662f\u5426\u9519\u8bef\uff0c\u82e5\u9519\u8bef\uff0c\u5219\u7ec8\u6b62\u5faa\u73af\uff0c\u7ed3\u675f\u7a0b\u5e8f\u3002\u4e0a\u9762\u770b\u8d77\u6765\u6709\u70b9\u7ed5\uff0c\u5176\u5b9e\u8fd9\u91cc\u9762generator.send(n)\u7684\u4f5c\u7528\u662f\uff1a\u628an\u53d1\u9001generator(\u751f\u6210\u5668)\u4e2dyield\u7684\u8d4b\u503c\u8bed\u53e5\u4e2d\uff0c\u540c\u65f6\u8fd4\u56degenerator\u4e2dyield\u7684\u53d8\u91cf\uff08\u7ed3\u679c\uff09\u3002<\/p>\n
\u4e8e\u662f\u7a0b\u5e8f\u4fbf\u4e00\u76f4\u8fd0\u4f5c\uff0c\u76f4\u81f3consumer\u4e2d\u83b7\u53d6\u7684n\u7684\u503c\u53d8\u4e3a3\uff01\u6b64\u65f6consumer\u628astatus\u53d8\u4e3aFalse\uff0c\u6700\u540e\u8fd4\u56de\u5230\u4e3b\u7a0b\u5e8f\uff0c\u4e3b\u7a0b\u5e8f\u4e2d\u65ad\u5faa\u73af\uff0c\u7a0b\u5e8f\u7ed3\u675f\u3002<\/p>\n
\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
\n
\u6211\u62ff\u5230\u4e865!\r\n\u6211\u62ff\u5230\u4e864!\r\n\u6211\u62ff\u5230\u4e863!\r\n\u6211\u53ea\u89813,4,5\u5c31\u884c\u5566\r\n\u7a0b\u5e8f\u7ed3\u675f\r\n<\/code><\/pre>\n<\/div>\n
Coroutine\u4e0eGenerator<\/b><\/p>\n
\u6709\u4e9b\u4eba\u4f1a\u628a\u751f\u6210\u5668\uff08generator\uff09\u548c\u534f\u7a0b\uff08coroutine\uff09\u7684\u6982\u5ff5\u6df7\u6dc6\uff0c\u6211\u4ee5\u524d\u4e5f\u4f1a\u8fd9\u6837\uff0c\u4e0d\u8fc7\u5176\u5b9e\u53d1\u73b0\uff0c\u4e24\u8005\u7684\u533a\u522b\u8fd8\u662f\u5f88\u5927\u7684\u3002<\/p>\n
\u76f4\u63a5\u4e0a\u6700\u91cd\u8981\u7684\u533a\u522b\uff1a<\/p>\n
    \n
  • generator\u603b\u662f\u751f\u6210\u503c\uff0c\u4e00\u822c\u662f\u8fed\u4ee3\u7684\u5e8f\u5217<\/li>\n
  • coroutine\u5173\u6ce8\u7684\u662f\u6d88\u8017\u503c\uff0c\u662f\u6570\u636e(data)\u7684\u6d88\u8d39\u8005<\/li>\n
  • coroutine\u4e0d\u4f1a\u4e0e\u8fed\u4ee3\u64cd\u4f5c\u5173\u8054\uff0c\u800cgenerator\u4f1a<\/li>\n
  • coroutine\u5f3a\u8c03\u534f\u540c\u63a7\u5236\u7a0b\u5e8f\u6d41\uff0cgenerator\u5f3a\u8c03\u4fdd\u5b58\u72b6\u6001\u548c\u4ea7\u751f\u6570\u636e<\/li>\n<\/ul>\n
    \u76f8\u4f3c\u7684\u662f\uff0c\u5b83\u4eec\u90fd\u662f\u4e0d\u7528return\u6765\u5b9e\u73b0\u91cd\u590d\u8c03\u7528\u7684\u51fd\u6570\/\u5bf9\u8c61\uff0c\u90fd\u7528\u5230\u4e86yield(\u4e2d\u65ad\/\u6062\u590d)\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u3002<\/p>\n
    asyncio<\/b><\/p>\n
    asyncio\u662fpython 3.4\u4e2d\u65b0\u589e\u7684\u6a21\u5757\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u673a\u5236\uff0c\u4f7f\u5f97\u4f60\u53ef\u4ee5\u7528\u534f\u7a0b\uff08coroutines\uff09\u3001IO\u590d\u7528\uff08multiplexing I\/O\uff09\u5728\u5355\u7ebf\u7a0b\u73af\u5883\u4e2d\u7f16\u5199\u5e76\u53d1\u6a21\u578b\u3002<\/p>\n
    \u6839\u636e\u5b98\u65b9\u8bf4\u660e\uff0casyncio\u6a21\u5757\u4e3b\u8981\u5305\u62ec\u4e86\uff1a<\/p>\n
      \n
    • \u5177\u6709\u7279\u5b9a\u7cfb\u7edf\u5b9e\u73b0\u7684\u4e8b\u4ef6\u5faa\u73af\uff08event loop\uff09;<\/li>\n
    • \u6570\u636e\u901a\u8baf\u548c\u534f\u8bae\u62bd\u8c61\uff08\u7c7b\u4f3cTwisted\u4e2d\u7684\u90e8\u5206);<\/li>\n
    • TCP\uff0cUDP,SSL\uff0c\u5b50\u8fdb\u7a0b\u7ba1\u9053\uff0c\u5ef6\u8fdf\u8c03\u7528\u548c\u5176\u4ed6;<\/li>\n
    • Future\u7c7b;<\/li>\n
    • yield from\u7684\u652f\u6301;<\/li>\n
    • \u540c\u6b65\u7684\u652f\u6301;<\/li>\n
    • \u63d0\u4f9b\u5411\u7ebf\u7a0b\u6c60\u8f6c\u79fb\u4f5c\u4e1a\u7684\u63a5\u53e3;<\/li>\n<\/ul>\n
      \u4e0b\u9762\u6765\u770b\u4e0basyncio\u7684\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
      \n
      import<\/span> asyncio<\/span>\r\n\r\nasync<\/span> def<\/span> compute<\/span>(<\/span>x<\/span>,<\/span> y<\/span>):<\/span>\r\n    print<\/span>(<\/span>\"Compute <\/span>%s<\/span> + <\/span>%s<\/span> ...\"<\/span> %<\/span> (<\/span>x<\/span>,<\/span> y<\/span>))<\/span>\r\n    await<\/span> asyncio<\/span>.<\/span>sleep<\/span>(<\/span>1.0<\/span>)<\/span>\r\n    return<\/span> x<\/span> +<\/span> y<\/span>\r\n\r\nasync<\/span> def<\/span> print_sum<\/span>(<\/span>x<\/span>,<\/span> y<\/span>):<\/span>\r\n    result<\/span> =<\/span> await<\/span> compute<\/span>(<\/span>x<\/span>,<\/span> y<\/span>)<\/span>\r\n    print<\/span>(<\/span>\"<\/span>%s<\/span> + <\/span>%s<\/span> = <\/span>%s<\/span>\"<\/span> %<\/span> (<\/span>x<\/span>,<\/span> y<\/span>,<\/span> result<\/span>))<\/span>\r\n\r\nloop<\/span> =<\/span> asyncio<\/span>.<\/span>get_event_loop<\/span>()<\/span>\r\nloop<\/span>.<\/span>run_until_complete<\/span>(<\/span>print_sum<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>))<\/span>\r\nloop<\/span>.<\/span>close<\/span>()<\/span>\r\n<\/code><\/pre>\n<\/div>\n
      <\/figure>\n
      \u5f53\u4e8b\u4ef6\u5faa\u73af\u5f00\u59cb\u8fd0\u884c\u65f6\uff0c\u5b83\u4f1a\u5728Task\u4e2d\u5bfb\u627ecoroutine\u6765\u6267\u884c\u8c03\u5ea6\uff0c\u56e0\u4e3a\u4e8b\u4ef6\u5faa\u73af\u6ce8\u518c\u4e86print_sum()<\/i>\uff0c\u56e0\u6b64print_sum()<\/i>\u88ab\u8c03\u7528\uff0c\u6267\u884cresult = await compute(x, y)<\/i>\u8fd9\u6761\u8bed\u53e5\uff08\u7b49\u540c\u4e8eresult = yield from compute(x, y)<\/i>\uff09\uff0c\u56e0\u4e3acompute()<\/i>\u81ea\u8eab\u5c31\u662f\u4e00\u4e2acoroutine\uff0c\u56e0\u6b64print_sum()<\/i>\u8fd9\u4e2a\u534f\u7a0b\u5c31\u4f1a\u6682\u65f6\u88ab\u6302\u8d77\uff0ccompute()<\/i>\u88ab\u52a0\u5165\u5230\u4e8b\u4ef6\u5faa\u73af\u4e2d\uff0c\u7a0b\u5e8f\u6d41\u6267\u884ccompute()<\/i>\u4e2d\u7684print\u8bed\u53e5\uff0c\u6253\u5370\u201dCompute %s + %s \u2026\u201d\uff0c\u7136\u540e\u6267\u884c\u4e86await asyncio.sleep(1.0)<\/i>\uff0c\u56e0\u4e3aasyncio.sleep()<\/i>\u4e5f\u662f\u4e00\u4e2acoroutine\uff0c\u63a5\u7740compute()<\/i>\u5c31\u4f1a\u88ab\u6302\u8d77\uff0c\u7b49\u5f85\u8ba1\u65f6\u5668\u8bfb\u79d2\uff0c\u5728\u8fd91\u79d2\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e8b\u4ef6\u5faa\u73af\u4f1a\u5728\u961f\u5217\u4e2d\u67e5\u8be2\u53ef\u4ee5\u88ab\u8c03\u5ea6\u7684coroutine\uff0c\u800c\u56e0\u4e3a\u6b64\u524dprint_sum()<\/i>\u4e0ecompute()<\/i>\u90fd\u88ab\u6302\u8d77\u4e86\uff0c\u56e0\u6b64\u4e8b\u4ef6\u5faa\u73af\u4f1a\u505c\u4e0b\u6765\u7b49\u5f85\u534f\u7a0b\u7684\u8c03\u5ea6\uff0c\u5f53\u8ba1\u65f6\u5668\u8bfb\u79d2\u7ed3\u675f\u540e\uff0c\u7a0b\u5e8f\u6d41\u4fbf\u4f1a\u8fd4\u56de\u5230compute()<\/i>\u4e2d\u6267\u884creturn\u8bed\u53e5\uff0c\u7ed3\u679c\u4f1a\u8fd4\u56de\u5230print_sum()<\/i>\u4e2d\u7684result\u4e2d\uff0c\u6700\u540e\u6253\u5370result\uff0c\u4e8b\u4ef6\u961f\u5217\u4e2d\u6ca1\u6709\u53ef\u4ee5\u8c03\u5ea6\u7684\u4efb\u52a1\u4e86\uff0c\u6b64\u65f6loop.close()<\/i>\u628a\u4e8b\u4ef6\u961f\u5217\u5173\u95ed\uff0c\u7a0b\u5e8f\u7ed3\u675f\u3002<\/p>\n
      \u4f1aJS\u7684\u540c\u5b66\u662f\u4e0d\u662f\u611f\u89c9\u500d\u611f\u4eb2\u5207\uff1f\u6ca1\u9519\uff0c\u4e8b\u4ef6\u9a71\u52a8<\/strong>\u6a21\u578b\u5c31\u662f\u5f02\u6b65\u7f16\u7a0b\u7684\u91cd\u4e2d\u4e4b\u91cd\u3002<\/p>\n
      \u6700\u540e\u518d\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\uff0c\u6f14\u793a\u4e8b\u4ef6\u9a71\u52a8<\/strong>\u6a21\u578b\u7684\u8fd0\u4f5c\u539f\u7406\u3002<\/p>\n
      \u9996\u5148\uff0c\u6211\u4eec\u7528\u540c\u6b65\u7684\u65b9\u5f0f\uff0c\u6293\u53d6baidu\u7684\u4e00\u767e\u4e2a\u7f51\u9875\u3002<\/p>\n
      \n
      def<\/span> sync_way<\/span>():<\/span>\r\n    for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>100<\/span>):<\/span>\r\n        sock<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>()<\/span>\r\n        sock<\/span>.<\/span>connect<\/span>((<\/span>'www.baidu.com'<\/span>,<\/span> 80<\/span>))<\/span>\r\n        print<\/span>(<\/span>'connected'<\/span>)<\/span>\r\n        request<\/span> =<\/span> 'GET {} HTTP\/1.0<\/span>\\r\\n<\/span>Host: www.baidu.com<\/span>\\r\\n\\r\\n<\/span>'<\/span>.<\/span>format<\/span>(<\/span>'\/s?wd={}'<\/span>.<\/span>format<\/span>(<\/span>i<\/span>))<\/span>\r\n        sock<\/span>.<\/span>send<\/span>(<\/span>request<\/span>.<\/span>encode<\/span>(<\/span>'ascii'<\/span>))<\/span>\r\n        response<\/span> =<\/span> b<\/span>''<\/span>\r\n        chunk<\/span> =<\/span> sock<\/span>.<\/span>recv<\/span>(<\/span>4096<\/span>)<\/span>\r\n        while<\/span> chunk<\/span>:<\/span>\r\n            response<\/span> +=<\/span> chunk<\/span>\r\n            chunk<\/span> =<\/span> sock<\/span>.<\/span>recv<\/span>(<\/span>4096<\/span>)<\/span>\r\n        print<\/span>(<\/span>'done!!'<\/span>)<\/span>\r\n\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nstart<\/span> =<\/span> time<\/span>()<\/span>\r\n\r\nsync_way<\/span>()<\/span>  #Cost 47.757508993148804 seconds<\/span>\r\n\r\nend<\/span> =<\/span> time<\/span>()<\/span>\r\nprint<\/span> (<\/span>'Cost {} seconds'<\/span>.<\/span>format<\/span>(<\/span>end<\/span> -<\/span> start<\/span>))<\/span>\r\n<\/code><\/pre>\n<\/div>\n
      \u603b\u5171\u8017\u65f647\u79d2\uff0c\u8fd9\u5bf9\u4e8e\u4e00\u4e2a\u8981\u6c42\u6027\u80fd\u7684\u722c\u866b\u6765\u8bf4\u662f\u4e0d\u53ef\u63a5\u53d7\u7684\uff0c\u770b\u770b\u6211\u4eec\u6709\u6ca1\u6709\u529e\u6cd5\u5c06\u8fd9\u4e2a\u722c\u866b\u7684\u6027\u80fd\u63d0\u9ad8\u5341\u500d\u4ee5\u4e0a\uff0c\u628a\u65f6\u95f4\u7f29\u77ed\u52305\u79d2\u4e4b\u5185\u3002<\/p>\n
      \u9996\u5148\u8003\u8651\u4e0a\u9762\u8fd9\u4e2a\u7a0b\u5e8f\u7684\u74f6\u9888\u51fa\u5728\u54ea\u4e2a\u5730\u65b9\uff0c\u7ecf\u8fc7\u601d\u8003\uff0c\u5f88\u5bb9\u6613\u770b\u51fa\u4e0a\u9762\u7684\u7a0b\u5e8f\u6709\u51e0\u4e2a\u4e0d\u8db3\u4e4b\u5904\uff1a<\/p>\n
        \n
      1. socket\u8fde\u63a5\u7684\u5efa\u7acb\u9700\u8981\u7b49\u5f85\uff0c\u4e00\u65e6\u63e1\u624b\u5efa\u7acb\u7684\u65f6\u95f4\u6f2b\u957f\uff0c\u5c31\u4f1a\u5f71\u54cd\u4e0b\u9762\u7684\u6d41\u7a0b\u6b63\u5e38\u8fd0\u884c\u3002<\/li>\n
      2. socket\u63a5\u6536\u6570\u636e\u7684\u8fc7\u7a0b\u662f\u963b\u585e\u5f0f\u7684\uff0c\u7b49\u5f85buffer\u7684\u8fc7\u7a0b\u4e5f\u662f\u9700\u8981\u4e00\u6bb5\u65f6\u95f4\u7684\u3002<\/li>\n
      3. socket\u7684\u5efa\u7acb\u8fde\u63a5-\u63a5\u6536\u8fc7\u7a0b\u90fd\u662f\u4e00\u4e2a\u4e00\u4e2a\u6765\u7684\uff0c\u5728\u6ca1\u5b8c\u6210\u4e00\u4e2a\u8fde\u63a5\u65f6\u4e0d\u80fd\u8fdb\u884c\u5176\u4ed6\u8fde\u63a5\u7684\u5904\u7406\u3002<\/li>\n<\/ol>\n
        \u597d\u4e86\uff0c\u5148\u89e3\u51b3\u7b2c\u4e00\u4e2a\u95ee\u9898\uff1asocket\u7684\u7b49\u5f85\u3002\u75db\u70b9\u5f88\u660e\u663e\uff0c\u6211\u4eec\u4e0d\u80fd\u4e00\u76f4\u7b49\u5f85socket\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\uff0c\u800c\u662f\u5f53socket\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u8ba9\u5b83\u544a\u8bc9\u6211\u4eec\u3002\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u5229\u7528io\u590d\u7528\uff0c\u5148\u770b\u770bio\u590d\u7528\u7684\u5b9a\u4e49\uff1a<\/p>\n
        IO\u590d\u7528\uff1a\u9884\u5148\u544a\u77e5\u5185\u6838\uff0c\u4f7f\u5185\u6838\u4e00\u65e6\u53d1\u73b0\u8fdb\u7a0b\u6307\u5b9a\u7684\u4e00\u4e2a\u6216\u591a\u4e2aIO\u6761\u4ef6\u5c31\u7eea\uff08\u8f93\u5165\u51c6\u5907\u88ab\u8bfb\u53d6\uff0c\u6216\u63cf\u8ff0\u7b26\u80fd\u627f\u63a5\u66f4\u591a\u7684\u8f93\u51fa\uff09\uff0c\u5b83\u5c31\u901a\u77e5\u8fdb\u7a0b\u3002<\/p><\/blockquote>\n
        \u963b\u585eIO\u6a21\u578b\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
        recvfrom->\u65e0\u6570\u636e\u62a5\u51c6\u5907\u597d->\u7b49\u5f85\u6570\u636e->\u6570\u636e\u62a5\u51c6\u5907\u597d->\u6570\u636e\u4ece\u5185\u6838\u590d\u5236\u5230\u7528\u6237\u7a7a\u95f4->\u590d\u5236\u5b8c\u6210->\u8fd4\u56de\u6210\u529f\u6307\u793a<\/em><\/strong><\/p>\n
        \u800cIO\u590d\u7528\u6a21\u578b\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
        select->\u65e0\u6570\u636e\u62a5\u51c6\u5907\u597d->\u636e\u62a5\u51c6\u5907\u597d->\u8fd4\u56de\u53ef\u8bfb\u6761\u4ef6->recvfrom->\u6570\u636e\u4ece\u5185\u6838\u590d\u5236\u5230\u7528\u6237\u7a7a\u95f4->\u590d\u5236\u5b8c\u6210->\u8fd4\u56de\u6210\u529f\u6307\u793a<\/em><\/strong><\/p>\n
        \u4e8e\u662f\u6211\u4eec\u53ef\u4ee5\u5bf9\u4e0a\u9762\u7684\u4ee3\u7801\u8fd9\u6837\u4fee\u6539\u3002<\/p>\n
        \n
        from<\/span> selectors<\/span> import<\/span> DefaultSelector<\/span>,<\/span> EVENT_WRITE<\/span>\r\n\r\nselector<\/span> =<\/span> DefaultSelector<\/span>()<\/span>\r\n\r\nsock<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>()<\/span>\r\nsock<\/span>.<\/span>setblocking<\/span>(<\/span>False<\/span>)<\/span>\r\ntry<\/span>:<\/span>\r\n    sock<\/span>.<\/span>connect<\/span>((<\/span>'www.baidu.com'<\/span>,<\/span> 80<\/span>))<\/span>\r\nexcept<\/span> BlockingIOError<\/span>:<\/span>\r\n    pass<\/span>\r\n\r\ndef<\/span> connected<\/span>():<\/span>\r\n    selector<\/span>.<\/span>unregister<\/span>(<\/span>sock<\/span>.<\/span>fileno<\/span>())<\/span>\r\n    print<\/span>(<\/span>'connected!'<\/span>)<\/span>\r\n    \r\nselector<\/span>.<\/span>register<\/span>(<\/span>sock<\/span>.<\/span>fileno<\/span>(),<\/span> EVENT_WRITE<\/span>,<\/span> connected<\/span>)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        \u628asocket\u8bbe\u7f6e\u4e3a\u975e\u963b\u585e\uff0c\u628asocket\u7684\u53e5\u67c4\u6ce8\u518c\u5230\u4e8b\u4ef6\u8f6e\u8be2\u4e2d\uff0c\u5f53socket\u53d1\u751f\u53ef\u5199\u4e8b\u4ef6\u65f6\uff0c\u8868\u793asocket\u8fde\u63a5\u5c31\u7eea\u4e86\uff0c\u8fd9\u65f6\u5019\u518d\u628asocket\u4ece\u4e8b\u4ef6\u8f6e\u8be2\u4e2d\u5220\u9664\uff0c\u5728socket\u8fd4\u56de\u53ef\u5199\u4e8b\u4ef6\u4e4b\u524d\uff0c\u7cfb\u7edf\u90fd\u4e0d\u662f\u963b\u585e\u72b6\u6001\u7684\u3002\u540c\u7406\uff0c\u5bf9\u4e8esocket\u4ece\u7f51\u7edc\u4e2d\u63a5\u6536\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u7528\u540c\u6837\u7684\u65b9\u6cd5\uff0c\u53ea\u9700\u8981\u628a\u8981\u76d1\u542c\u7684\u4e8b\u4ef6\u6539\u4e3a\u53ef\u8bfb\u4e8b\u4ef6\u5c31\u884c\u4e86\u3002<\/p>\n
        \u5f53\u7136\uff0c\u4ec5\u4ec5\u8fd9\u6837\u8fd8\u662f\u4e0d\u591f\u7684\uff0c\u8bd5\u60f3\u4e00\u4e0b\uff0c\u5982\u679c\u6709\u591a\u4e2asocket\u8fdb\u884c\u8fde\u63a5\uff0c\u91c7\u7528\u4e0a\u9762\u7684\u975e\u963b\u585e\u65b9\u5f0f\uff0c\u5f53\u4e00\u4e2asocket\u5f00\u59cb\u7b49\u5f85\u4e8b\u4ef6\u8fd4\u56de\u65f6\uff0c\u7406\u8bba\u4e0a\u7cfb\u7edf\u6b64\u65f6\u5e94\u8be5\u505a\u7684\u662f\u5904\u7406\u53e6\u4e00\u4e2asocket\u7684\u6d41\u7a0b\uff0c\u4f46\u8fd9\u91cc\u8fd8\u7f3a\u4e4f\u4e86\u4e00\u4e2a\u5fc5\u8981\u7684\u673a\u5236\uff0c\u5f53\u4ece\u4e00\u4e2a\u5904\u7406socket\u6d41\u7a0b\u5207\u5230\u53e6\u4e00\u4e2a\u5904\u7406socket\u6d41\u7a0b\u65f6\uff0c\u539f\u6765\u7684\u6d41\u7a0b\u7684\u4e0a\u4e0b\u6587\u72b6\u6001\u8be5\u600e\u4e48\u4fdd\u5b58\u4e0b\u6765\u4ee5\u4fbf\u6062\u590d\u5462\uff0c\u663e\u7136\u6613\u89c1\u8fd9\u91cc\u9700\u8981\u7528\u5230\u4e0a\u9762\u8bf4\u5230\u7684\u534f\u7a0b\u673a\u5236\uff0c\u5728python\u4e2d\u901a\u8fc7yield\u8bed\u6cd5\u53ef\u4ee5\u628a\u4e00\u4e2a\u51fd\u6570\u6216\u65b9\u6cd5\u5305\u88c5\u6210\u4e00\u4e2a\u751f\u6210\u5668\uff0c\u5f53\u751f\u6210\u5668\u6267\u884cyield\u8bed\u53e5\u65f6\uff0c\u751f\u6210\u5668\u5185\u90e8\u7684\u4e0a\u4e0b\u6587\u72b6\u6001\u5c31\u4f1a\u88ab\u4fdd\u5b58\uff0c\u5982\u679c\u60f3\u8981\u5728\u672a\u6765\u7684\u64cd\u4f5c\u4e2d\u628a\u8fd9\u4e2a\u751f\u6210\u5668\u6062\u590d\uff0c\u53ea\u9700\u8981\u8c03\u7528\u751f\u6210\u5668\u7684send\u65b9\u6cd5\u5373\u53ef\u4ece\u539f\u6d41\u7a0b\u4e2d\u7ee7\u7eed\u5f80\u4e0b\u8d70\u3002<\/p>\n
        \u6709\u4e86\u4e0a\u9762\u8fd9\u4e2a\u6982\u5ff5\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2aFuture\u7c7b\uff0c\u5b83\u4ee3\u8868\u4e86\u534f\u7a0b\u4e2d\u7b49\u5f85\u7684\u201c\u672a\u6765\u53d1\u751f\u7684\u7ed3\u679c\u201d\uff0c\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5728\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u65f6\uff0csocket\u4f1a\u5728buffer\u4e2d\u8fd4\u56de\u4e00\u4e9b\u6570\u636e\uff0c\u8fd9\u4e2a\u83b7\u53d6\u7684\u52a8\u4f5c\u5728\u5f02\u6b65\u6d41\u7a0b\u4e2d\u53d1\u751f\u7684\u65f6\u95f4\u662f\u4e0d\u786e\u5b9a\u7684\uff0cFuture\u5c31\u662f\u7528\u6765\u5c01\u88c5\u8fd9\u4e2a\u672a\u6765\u7ed3\u679c\u7684\u7c7b\uff0c\u4f46\u5f53socket\u5728\u67d0\u4e2a\u65f6\u95f4\u6bb5\u76d1\u6d4b\u5230\u53ef\u8bfb\u4e8b\u4ef6\uff0c\u8bfb\u53d6\u5230\u6570\u636e\u4e86\uff0c\u90a3\u4e48\u4ed6\u5c31\u4f1a\u628a\u6570\u636e\u5199\u5165Future\u91cc\uff0c\u5e76\u544a\u77e5Future\u8981\u6267\u884c\u67d0\u4e9b\u56de\u8c03\u52a8\u4f5c\u3002<\/p>\n
        \n
        class<\/span> Future<\/span>:<\/span>\r\n    def<\/span> __init__<\/span>(<\/span>self<\/span>):<\/span>\r\n        self<\/span>.<\/span>result<\/span> =<\/span> None<\/span>\r\n        self<\/span>.<\/span>_callbacks<\/span> =<\/span> []<\/span>\r\n\r\n    def<\/span> add_done_callback<\/span>(<\/span>self<\/span>,<\/span> fn<\/span>):<\/span>\r\n        self<\/span>.<\/span>_callbacks<\/span>.<\/span>append<\/span>(<\/span>fn<\/span>)<\/span>\r\n\r\n    def<\/span> set_result<\/span>(<\/span>self<\/span>,<\/span> result<\/span>):<\/span>\r\n        self<\/span>.<\/span>result<\/span> =<\/span> result<\/span>\r\n        for<\/span> callback<\/span> in<\/span> self<\/span>.<\/span>_callbacks<\/span>:<\/span>\r\n            callback<\/span>(<\/span>self<\/span>)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        \u6709\u4e86Future\uff0c\u6211\u4eec\u53ef\u4ee5\u5305\u88c5\u4e00\u4e2aAsyncRequest\u7c7b\uff0c\u7528\u4ee5\u53d1\u8d77\u5f02\u6b65\u8bf7\u6c42\u7684\u64cd\u4f5c\u3002<\/p>\n
        \n
        class<\/span> AsyncRequest<\/span>:<\/span>\r\n    def<\/span> __init__<\/span>(<\/span>self<\/span>,<\/span> host<\/span>,<\/span> url<\/span>,<\/span> port<\/span>,<\/span> timeout<\/span>=<\/span>5<\/span>):<\/span>\r\n        self<\/span>.<\/span>sock<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>()<\/span>\r\n        self<\/span>.<\/span>sock<\/span>.<\/span>settimeout<\/span>(<\/span>timeout<\/span>)<\/span>\r\n        self<\/span>.<\/span>sock<\/span>.<\/span>setblocking<\/span>(<\/span>False<\/span>)<\/span>\r\n        self<\/span>.<\/span>host<\/span> =<\/span> host<\/span>\r\n        self<\/span>.<\/span>url<\/span> =<\/span> url<\/span>\r\n        self<\/span>.<\/span>port<\/span> =<\/span> port<\/span>\r\n        self<\/span>.<\/span>method<\/span> =<\/span> None<\/span>\r\n\r\n    def<\/span> get<\/span>(<\/span>self<\/span>):<\/span>\r\n        self<\/span>.<\/span>method<\/span> =<\/span> 'GET'<\/span>\r\n        self<\/span>.<\/span>request<\/span> =<\/span> '{} {} HTTP\/1.0<\/span>\\r\\n<\/span>Host: {}<\/span>\\r\\n\\r\\n<\/span>'<\/span>.<\/span>format<\/span>(<\/span>self<\/span>.<\/span>method<\/span>,<\/span> self<\/span>.<\/span>url<\/span>,<\/span> self<\/span>.<\/span>host<\/span>)<\/span>\r\n        return<\/span> self<\/span>\r\n\r\n    def<\/span> process<\/span>(<\/span>self<\/span>):<\/span>\r\n        if<\/span> self<\/span>.<\/span>method<\/span> is<\/span> None<\/span>:<\/span>\r\n            self<\/span>.<\/span>get<\/span>()<\/span>\r\n        try<\/span>:<\/span>\r\n            self<\/span>.<\/span>sock<\/span>.<\/span>connect<\/span>((<\/span>self<\/span>.<\/span>host<\/span>,<\/span> self<\/span>.<\/span>port<\/span>))<\/span>\r\n        except<\/span> BlockingIOError<\/span>:<\/span>\r\n            pass<\/span>\r\n        self<\/span>.<\/span>f<\/span> =<\/span> Future<\/span>()<\/span>\r\n        selector<\/span>.<\/span>register<\/span>(<\/span>self<\/span>.<\/span>sock<\/span>.<\/span>fileno<\/span>(),<\/span>\r\n                      EVENT_WRITE<\/span>,<\/span>\r\n                      self<\/span>.<\/span>on_connected<\/span>)<\/span>\r\n        yield<\/span> self<\/span>.<\/span>f<\/span>\r\n        selector<\/span>.<\/span>unregister<\/span>(<\/span>self<\/span>.<\/span>sock<\/span>.<\/span>fileno<\/span>())<\/span>\r\n\r\n        self<\/span>.<\/span>sock<\/span>.<\/span>send<\/span>(<\/span>self<\/span>.<\/span>request<\/span>.<\/span>encode<\/span>(<\/span>'ascii'<\/span>))<\/span>\r\n\r\n        chunk<\/span> =<\/span> yield<\/span> from<\/span> read_all<\/span>(<\/span>self<\/span>.<\/span>sock<\/span>)<\/span>\r\n        return<\/span> chunk<\/span>\r\n\r\n    def<\/span> on_connected<\/span>(<\/span>self<\/span>,<\/span> key<\/span>,<\/span> mask<\/span>):<\/span>\r\n        self<\/span>.<\/span>f<\/span>.<\/span>set_result<\/span>(<\/span>None<\/span>)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        \u5728AsyncRequest\u7684process\u65b9\u6cd5\u91cc\uff0c\u5b9e\u4f8b\u5728\u53d1\u8d77\u5f02\u6b65\u8fde\u63a5\u8bf7\u6c42\u540e\u901a\u8fc7yield\u4e00\u4e2afuture\u963b\u65ad\u4e86\u7a0b\u5e8f\u6d41\uff0c\u8868\u793a\u4ed6\u9700\u8981\u7b49\u5f85\u672a\u6765\u53d1\u751f\u7684\u52a8\u4f5c\u53d1\u751f\uff08\u5728\u8fd9\u91cc\u662f\u7b49\u5f85socket\u53ef\u5199\uff09\uff0c\u8fd9\u65f6\u5019\u7cfb\u7edf\u4f1a\u53bb\u6267\u884c\u5176\u4ed6\u4e8b\u4ef6\uff0c\u5f53\u672a\u6765socket\u53d8\u6210\u53ef\u5199\u65f6\uff0cfuture\u88ab\u5199\u5165\u6570\u636e\uff0c\u540c\u65f6\u6267\u884c\u56de\u8c03\uff0c\u4ece\u539f\u6765\u505c\u4e0b\u7684\u5730\u65b9\u5f00\u59cb\u6267\u884c\uff0c\u6267\u884c\u8bfb\u53d6socket\u6570\u636e\u7684\u5904\u7406\u3002<\/p>\n
        \u8fd9\u91cc\u5173\u952e\u7684\u5730\u65b9\u5c31\u662ffuture\u5728yield\u4e4b\u540e\u4f1a\u5728\u672a\u6765\u67d0\u4e2a\u65f6\u5019\u518d\u6b21\u88absend\u7136\u540e\u7ee7\u7eed\u5f80\u4e0b\u8d70\uff0c\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u4e00\u4e2a\u7528\u6765\u9a71\u52a8Future\u7684\u7c7b\u3002\u8fd9\u91cc\u79f0\u4e3aTask\uff0c\u5b83\u9700\u8981\u63a5\u53d7\u4e00\u4e2a\u534f\u7a0b\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u9a71\u52a8\u534f\u7a0b\u7684\u7a0b\u5e8f\u6d41\u6267\u884c\u3002<\/p>\n
        \n
        class<\/span> Task<\/span>(<\/span>Future<\/span>):<\/span>\r\n    def<\/span> __init__<\/span>(<\/span>self<\/span>,<\/span> coro<\/span>):<\/span>\r\n        super<\/span>()<\/span>.<\/span>__init__<\/span>()<\/span>\r\n        self<\/span>.<\/span>coro<\/span> =<\/span> coro<\/span>\r\n        f<\/span> =<\/span> Future<\/span>()<\/span>\r\n        f<\/span>.<\/span>set_result<\/span>(<\/span>None<\/span>)<\/span>\r\n        self<\/span>.<\/span>step<\/span>(<\/span>f<\/span>)<\/span>\r\n\r\n    def<\/span> step<\/span>(<\/span>self<\/span>,<\/span> future<\/span>):<\/span>\r\n        try<\/span>:<\/span>\r\n            next_future<\/span> =<\/span> self<\/span>.<\/span>coro<\/span>.<\/span>send<\/span>(<\/span>future<\/span>.<\/span>result<\/span>)<\/span>\r\n            if<\/span> next_future<\/span> is<\/span> None<\/span>:<\/span>\r\n                return<\/span>\r\n        except<\/span> StopIteration<\/span> as<\/span> exc<\/span>:<\/span>\r\n            self<\/span>.<\/span>set_result<\/span>(<\/span>exc<\/span>.<\/span>value<\/span>)<\/span>\r\n            return<\/span>\r\n        next_future<\/span>.<\/span>add_done_callback<\/span>(<\/span>self<\/span>.<\/span>step<\/span>)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        \u6700\u7ec8\uff0c\u6574\u4e2a\u7a0b\u5e8f\u8fd8\u9700\u8981\u4e00\u4e2aEventLoop\u7c7b\uff0c\u7528\u6765\u76d1\u542c\u5230\u6765\u7684\u4e8b\u4ef6\u4e3asocket\u6267\u884c\u56de\u8c03\u4ee5\u53ca\u628a\u534f\u7a0b\u5305\u88c5\u6210Task\u6765\u5b9e\u73b0\u5f02\u6b65\u9a71\u52a8\u3002<\/p>\n
        \n
        class<\/span> EventLoop<\/span>:<\/span>\r\n    stopped<\/span> =<\/span> False<\/span>\r\n    select_timeout<\/span> =<\/span> 5<\/span>\r\n\r\n    def<\/span> run_until_complete<\/span>(<\/span>self<\/span>,<\/span> coros<\/span>):<\/span>\r\n        tasks<\/span> =<\/span> [<\/span>Task<\/span>(<\/span>coro<\/span>)<\/span> for<\/span> coro<\/span> in<\/span> coros<\/span>]<\/span>\r\n        try<\/span>:<\/span>\r\n            self<\/span>.<\/span>run_forever<\/span>()<\/span>\r\n        except<\/span> StopError<\/span>:<\/span>\r\n            pass<\/span>\r\n\r\n    def<\/span> run_forever<\/span>(<\/span>self<\/span>):<\/span>\r\n        while<\/span> not<\/span> self<\/span>.<\/span>stopped<\/span>:<\/span>\r\n            events<\/span> =<\/span> selector<\/span>.<\/span>select<\/span>(<\/span>self<\/span>.<\/span>select_timeout<\/span>)<\/span>\r\n            if<\/span> not<\/span> events<\/span>:<\/span>\r\n                raise<\/span> SelectTimeout<\/span>(<\/span>'\u8f6e\u8be2\u8d85\u65f6'<\/span>)<\/span>\r\n            for<\/span> event_key<\/span>,<\/span> event_mask<\/span> in<\/span> events<\/span>:<\/span>\r\n                callback<\/span> =<\/span> event_key<\/span>.<\/span>data<\/span>\r\n                callback<\/span>(<\/span>event_key<\/span>,<\/span> event_mask<\/span>)<\/span>\r\n\r\n    def<\/span> close<\/span>(<\/span>self<\/span>):<\/span>\r\n        self<\/span>.<\/span>stopped<\/span> =<\/span> True<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        OK\uff0c\u90a3\u4e48\u73b0\u5728\u7528\u65b0\u7684\u65b9\u6cd5\u518d\u6d4b\u8bd5\u4e00\u904d\uff0c\u901a\u8fc7python3\u7684yield from\u8bed\u6cd5\u6211\u4eec\u628a\u534f\u7a0b\u64cd\u4f5c\u4ee3\u7406\u5230AsyncRequest\u7c7b\u7684process\u65b9\u6cd5\u4e2d\uff0c\u6700\u7ec8\u628a\u534f\u7a0b\u653e\u5230EventLoop\u4e2d\u6267\u884c\u3002<\/p>\n
        \n
        def<\/span> fetch<\/span>(<\/span>url<\/span>):<\/span>\r\n    request<\/span> =<\/span> AsyncRequest<\/span>(<\/span>'www.baidu.com'<\/span>,<\/span> url<\/span>,<\/span> 80<\/span>)<\/span>\r\n    data<\/span> =<\/span> yield<\/span> from<\/span> request.process<\/span>()<\/span>\r\n    return<\/span> data<\/span>\r\n\r\ndef<\/span> get_page<\/span>(<\/span>url<\/span>):<\/span>\r\n    page<\/span> =<\/span> yield<\/span> from<\/span> fetch<\/span>(<\/span>url<\/span>)<\/span>\r\n    return<\/span> page<\/span>\r\n\r\ndef<\/span> async_way<\/span>():<\/span>\r\n    ev_loop<\/span> =<\/span> get_event_loop<\/span>()<\/span>\r\n    ev_loop<\/span>.<\/span>run_until_complete<\/span>([<\/span>\r\n        get_page<\/span>(<\/span>'\/s?wd={}'<\/span>.<\/span>format<\/span>(<\/span>i<\/span>))<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>100<\/span>)<\/span>\r\n    ])<\/span>\r\n\r\nfrom<\/span> time<\/span> import<\/span> time<\/span>\r\nstart<\/span> =<\/span> time<\/span>()<\/span>\r\n\r\nasync_way<\/span>()<\/span> # Cost 3.534296989440918 seconds<\/span>\r\n\r\nend<\/span> =<\/span> time<\/span>()<\/span>\r\nprint<\/span> (<\/span>'Cost {} seconds'<\/span>.<\/span>format<\/span>(<\/span>end<\/span> -<\/span> start<\/span>))<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        \u53ef\u4ee5\u770b\u5230\u603b\u5171\u8017\u65f63.5\u79d2\uff0c\u901a\u8fc7\u628a\u540c\u6b65\u6539\u5199\u6210\u57fa\u4e8e\u4e8b\u4ef6\u9a71\u52a8\u7684\u5f02\u6b65\uff0c\u6574\u4e2a\u7a0b\u5e8f\u7684\u6548\u7387\u63d0\u9ad8\u7684\u5341\u500d\u4ee5\u4e0a\u3002<\/p>\n
        \u6709\u4e86\u4e0a\u9762\u7684\u57fa\u7840\uff0c\u53ef\u4ee5\u66f4\u8fdb\u4e00\u6b65\u6539\u5199\u51fa\u4e00\u4e2a\u7684\u4efb\u52a1\u961f\u5217\u7684\u5f02\u6b65\u5904\u7406\u5f62\u5f0f\uff0c\u628aEventLoop\u7684\u5b9e\u73b0\u9690\u85cf\uff0c\u63d0\u4f9b\u66f4\u7b80\u5355\u7684\u63a5\u53e3\u3002<\/p>\n
        \n
        from<\/span> collections<\/span> import<\/span> deque<\/span>\r\n\r\nclass<\/span> Queue<\/span>:<\/span>\r\n    def<\/span> __init__<\/span>(<\/span>self<\/span>):<\/span>\r\n        self<\/span>.<\/span>_q<\/span> =<\/span> deque<\/span>()<\/span>\r\n        self<\/span>.<\/span>size<\/span> =<\/span> 0<\/span>\r\n\r\n    def<\/span> put<\/span>(<\/span>self<\/span>,<\/span> item<\/span>):<\/span>\r\n        self<\/span>.<\/span>size<\/span> +=<\/span> 1<\/span>\r\n        self<\/span>.<\/span>_q<\/span>.<\/span>append<\/span>(<\/span>item<\/span>)<\/span>\r\n\r\n    def<\/span> get<\/span>(<\/span>self<\/span>):<\/span>\r\n        item<\/span> =<\/span> self<\/span>.<\/span>_q<\/span>.<\/span>popleft<\/span>()<\/span>\r\n        return<\/span> item<\/span>\r\n\r\n    def<\/span> task_done<\/span>(<\/span>self<\/span>):<\/span>\r\n        self<\/span>.<\/span>size<\/span> -=<\/span> 1<\/span>\r\n        if<\/span> self<\/span>.<\/span>size<\/span> ==<\/span> 0<\/span>:<\/span>\r\n            self<\/span>.<\/span>empty_callback<\/span>()<\/span>\r\n\r\nclass<\/span> AsyncWorker<\/span>(<\/span>Queue<\/span>):<\/span>\r\n    def<\/span> __init__<\/span>(<\/span>self<\/span>,<\/span> coroutine<\/span>,<\/span> workers<\/span>=<\/span>10<\/span>,<\/span> loop_timeout<\/span>=<\/span>5<\/span>):<\/span>\r\n        super<\/span>()<\/span>.<\/span>__init__<\/span>()<\/span>\r\n        self<\/span>.<\/span>func<\/span> =<\/span> coroutine<\/span>\r\n        self<\/span>.<\/span>stopped<\/span> =<\/span> False<\/span>\r\n        self<\/span>.<\/span>ev_loop<\/span> =<\/span> get_event_loop<\/span>()<\/span>\r\n        self<\/span>.<\/span>ev_loop<\/span>.<\/span>select_timeout<\/span> =<\/span> loop_timeout<\/span>\r\n        self<\/span>.<\/span>workers<\/span> =<\/span> workers<\/span>\r\n        self<\/span>.<\/span>result_callbacks<\/span> =<\/span> []<\/span>\r\n\r\n    def<\/span> work<\/span>(<\/span>self<\/span>):<\/span>\r\n        def<\/span> _work<\/span>():<\/span>\r\n            while<\/span> not<\/span> self<\/span>.<\/span>stopped<\/span>:<\/span>\r\n                item<\/span> =<\/span> None<\/span>\r\n                try<\/span>:<\/span>\r\n                    item<\/span> =<\/span> self<\/span>.<\/span>get<\/span>()<\/span>\r\n                except<\/span> IndexError<\/span>:<\/span>\r\n                    yield<\/span> None<\/span>\r\n                result<\/span> =<\/span> yield<\/span> from<\/span> self.func<\/span>(<\/span>item<\/span>)<\/span>\r\n                self<\/span>.<\/span>task_done<\/span>()<\/span>\r\n                for<\/span> callback<\/span> in<\/span> self<\/span>.<\/span>result_callbacks<\/span>:<\/span>\r\n                    callback<\/span>(<\/span>result<\/span>)<\/span>\r\n        self<\/span>.<\/span>tasks<\/span> =<\/span> []<\/span>\r\n        for<\/span> _<\/span> in<\/span> range<\/span>(<\/span>self<\/span>.<\/span>workers<\/span>):<\/span>\r\n            self<\/span>.<\/span>tasks<\/span>.<\/span>append<\/span>(<\/span>_work<\/span>())<\/span>\r\n        self<\/span>.<\/span>ev_loop<\/span>.<\/span>run_until_complete<\/span>(<\/span>self<\/span>.<\/span>tasks<\/span>)<\/span>\r\n\r\n    def<\/span> add_result_callback<\/span>(<\/span>self<\/span>,<\/span> func<\/span>):<\/span>\r\n        self<\/span>.<\/span>result_callbacks<\/span>.<\/span>append<\/span>(<\/span>func<\/span>)<\/span>\r\n\r\n    def<\/span> empty_callback<\/span>(<\/span>self<\/span>):<\/span>\r\n        self<\/span>.<\/span>ev_loop<\/span>.<\/span>close<\/span>()<\/span>\r\n\r\ndef<\/span> print_content_length<\/span>(<\/span>data<\/span>):<\/span>\r\n    print<\/span>(<\/span>len<\/span>(<\/span>data<\/span>))<\/span>\r\n\r\nasync_worker<\/span> =<\/span> AsyncWorker<\/span>(<\/span>get_page<\/span>,<\/span> workers<\/span>=<\/span>20<\/span>)<\/span>\r\nasync_worker<\/span>.<\/span>add_result_callback<\/span>(<\/span>print_content_length<\/span>)<\/span>\r\nfor<\/span> i<\/span> in<\/span> range<\/span>(<\/span>15<\/span>):<\/span>\r\n    async_worker<\/span>.<\/span>put<\/span>(<\/span>'\/s?wd={}'<\/span>.<\/span>format<\/span>(<\/span>i<\/span>))<\/span>\r\nasync_worker<\/span>.<\/span>work<\/span>()<\/span>\r\n<\/code><\/pre>\n<\/div>\n
        \u53c2\u8003\u6587\u732e\uff1a<\/p>\n
        A Web Crawler With asyncio Coroutines<\/a><\/p>\n
        ————<\/p>\n
        End<\/p>\n
        \u6211\u7684\u5176\u4ed6\u6587\u7ae0\uff1a<\/p>\n
        \u56db\u6761\u9c7c – \u77e5\u4e4e\u4e13\u680f<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
        \u539f\u6587\u5730\u5740 \u672c\u6587\u5c06\u901a\u8fc7\u4e00\u4e9b\u4f8b\u5b50\u6765\u8bb2\u8ff0\u4f5c\u4e3aP<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[118],"class_list":["post-4985","post","type-post","status-publish","format-standard","hentry","tag-02-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4985","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4985"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4985\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}