{"id":91558,"date":"2020-05-12T22:24:40","date_gmt":"2020-05-12T14:24:40","guid":{"rendered":"http:\/\/4563.org\/?p=91558"},"modified":"2020-05-12T22:24:40","modified_gmt":"2020-05-12T14:24:40","slug":"python-3-9-%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%ef%bc%9a%e6%9b%b4%e5%bf%ab%e7%9a%84-list%e3%80%81dict-%e5%92%8c-range-%e7%ad%89%e5%86%85%e7%bd%ae%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=91558","title":{"rendered":"Python 3.9 \u6027\u80fd\u4f18\u5316\uff1a\u66f4\u5feb\u7684 list()\u3001dict() \u548c range() \u7b49\u5185\u7f6e\u7c7b\u578b"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  Python 3.9 \u6027\u80fd\u4f18\u5316\uff1a\u66f4\u5feb\u7684 list()\u3001dict() \u548c range() \u7b49\u5185\u7f6e\u7c7b\u578b               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : chinesehuazhou <\/span>  <span><i><\/i> 14<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>Python \u7684 3.9.0 \u7248\u672c\u6b63\u5728\u5f00\u53d1\u4e2d\uff0c\u8ba1\u5212\u5728 2020-10-05 \u53d1\u5e03 final \u7248\u672c\u3002<\/p>\n<p>\u5b98\u65b9\u5728 changelog \u4e2d\u62ab\u9732\u4e86\u5f88\u591a\u7ec6\u8282\uff0c\u5176\u4e2d\u6709\u4e00\u9879\u201cvectorcall\u201d\u7279\u6027\u662f\u6700\u5bb9\u6613\u88ab\u63a5\u53d7\u7684\uff0c\u672c\u6587\u6253\u7b97\u5e26\u5927\u5bb6\u5148\u6765\u4e00\u63a2\u7a76\u7adf\u3002<\/p>\n<p>\u4e8b\u5b9e\u4e0a\uff0c\u65e9\u5728 Python 3.8 \u7248\u672c\u4e2d\u5c31\u5df2\u90e8\u5206\u5730\u5b9e\u73b0\u4e86 vectorcall\uff0c\u53ea\u4e0d\u8fc7\u5b83\u662f\u6682\u65f6\u6027\u7684\uff0c\u88ab\u9690\u85cf\u8d77\u6765\u4e86\uff0c\u6309\u8ba1\u5212\u662f\u5728 3.9 \u7248\u672c\u4e2d\u5b9e\u73b0\u5b8c\u5168\u4f53\u3002\u4e0b\u56fe\u662f 3.8 \u7248\u672c\u4e2d\u7684\u7b80\u4ecb\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec3d01b136bf.jpg\" alt=\"Python 3.9 \u6027\u80fd\u4f18\u5316\uff1a\u66f4\u5feb\u7684 list()\u3001dict() \u548c range() \u7b49\u5185\u7f6e\u7c7b\u578b\" \/><\/p>\n<p><strong>\u90a3\u4e48\uff0c\u4ec0\u4e48\u662f vectorcall \u5462\uff1f\u5b83\u4f1a\u5e26\u6765\u54ea\u4e9b\u53d8\u5316\u5462\uff1f<\/strong><\/p>\n<p>\u201ca fast calling protocol for CPython\u201d\uff0c\u5373\u5b83\u662f CPython \u7684\u4e00\u79cd\u5feb\u901f\u8c03\u7528\u534f\u8bae\uff0c<strong>\u53ef\u4ee5\u52a0\u901f CPython \u89e3\u91ca\u5668\u5728\u8c03\u7528\u7c7b\u5bf9\u8c61\u65f6\u7684\u901f\u5ea6\u3002<\/strong><\/p>\n<p>\uff08 PS\uff1a\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u91cc\u8bf4\u7684\u201c\u534f\u8bae\u201d\u662f\u4e00\u79cd\u5e7f\u4e49\u7684\u79f0\u547c\uff0c\u5b83\u8ddf\u6211\u4eec\u719f\u77e5\u7684\u7f51\u7edc\u534f\u8bae\u6216\u901a\u4fe1\u534f\u8bae\u4e0d\u540c\uff0c\u53ef\u7406\u89e3\u4e3a\u5bf9\u4ee3\u7801\u4f5c\u8c03\u7528\u65f6\u7684\u4e00\u79cd\u7ea6\u5b9a\u3001\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff09<\/p>\n<p>\u8fd9\u79cd\u534f\u8bae\u662f\u5728 PEP-590 \u4e2d\u88ab\u63d0\u51fa\u7684\uff08\u65f6\u95f4\u662f 2019-03-29 \uff09\uff0c\u5bf9\u5e94\u7684 bpo \u662f issue37207\uff0c\u5386\u65f6\u8fd1\u4e00\u5e74\u7684\u5f00\u53d1\uff0c\u76ee\u524d\u5b83\u7684\u5b9e\u73b0\u5df2\u5408\u5165\u4e86\u4ee3\u7801\u4ed3\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec3d0260a895.jpg\" alt=\"Python 3.9 \u6027\u80fd\u4f18\u5316\uff1a\u66f4\u5feb\u7684 list()\u3001dict() \u548c range() \u7b49\u5185\u7f6e\u7c7b\u578b\" \/><\/p>\n<p>\u7528\u4e00\u53e5\u8bdd\u6982\u62ec\u5b83\u7684\u6838\u5fc3\u8981\u70b9\u662f\uff1a<strong>\u5b83\u5c06\u63d0\u5347 list()\u3001tuple()\u3001dict() \u7b49\u4e3b\u8981\u7c7b\u578b\u7684\u8c03\u7528\u901f\u5ea6\uff0c\u540c\u65f6\u5b83\u8fd8\u53ef\u4ee5\u88ab\u7528\u5728\u81ea\u5b9a\u4e49\u7684\u7c7b\u4e0a\u3002<\/strong><\/p>\n<p>\u7ed3\u5408 PEP \u4e0e bpo \u4fe1\u606f\uff0c\u6211\u63d0\u70bc\u4e86\u4ee5\u4e0b\u7684\u8be6\u7ec6\u8981\u70b9\uff1a<\/p>\n<ul>\n<li>vectorcall \u662f\u5bf9 fastcall \u7684\u6b63\u5f0f\u5316\u3002\u5728\u4e4b\u524d\u7684 CPython \u4e2d\u5b58\u5728\u4e00\u4e9b\u96f6\u6563\u7684\u4f18\u5316\u70b9\uff08\u5373 fastcall \uff09\uff0c\u5982\u4eca\u5b98\u65b9\u628a\u5b83\u4eec\u7cfb\u7edf\u5316\u4e86\uff0c\u7ed9\u51fa\u4e86\u4e00\u4e2a\u6b63\u5f0f\u7684\u201cvectorcall\u201d\u79f0\u547c<\/li>\n<li>vectorcall \u9002\u7528\u4e8e\u591a\u6570\u5185\u7f6e\u7c7b\u578b\u3002\u636e\u5f53\u524d\u7684\u62ab\u9732\u4fe1\u606f\uff0c\u5b83\u9002\u7528\u4e8e list \u3001tuple \u3001dict \u3001set \u3001frozenset \u4e0e range \u8fd9 6 \u79cd\u4e3b\u8981\u7684\u5185\u7f6e\u7c7b\u578b\uff08\u90e8\u5206\u6d4b\u91cf\u6570\u636e\u663e\u793a\uff0c\u901f\u5ea6\u63d0\u5347\u7387\u8fbe 10%~30%\uff09<\/li>\n<li>vectorcall \u662f\u5bf9\u6027\u80fd\u4e0e\u7075\u6d3b\u6027\u7684\u8c03\u548c\u3002\u4e4b\u524d\u7684\u89e3\u91ca\u5668\u5177\u6709\u5f88\u9ad8\u7684\u7075\u6d3b\u6027\uff0c\u4f46\u662f\u5728\u5bf9\u8c61\u8c03\u7528\u8fc7\u7a0b\u4e2d\uff0c\u5b58\u5728\u4e0d\u5fc5\u8981\u7684\u4e2d\u95f4\u5bf9\u8c61\u4ee5\u53ca\u95f4\u63a5\u7684\u8c03\u7528\u5f00\u9500\uff0c\u5982\u4eca\u662f\u8bbe\u6cd5\u6d88\u9664\u4e86\u8fd9\u90e8\u5206\u5f00\u9500\uff0c\u5f97\u4ee5\u63d0\u5347\u4e86\u6027\u80fd<\/li>\n<\/ul>\n<p>PEP-590 \u4e2d\u8fd8\u8be6\u7ec6\u4ecb\u7ecd\u4e86 CPython \u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u5e76\u7f57\u5217\u4e86 C API \u7684\u53d8\u5316\u70b9\uff0c\u8fd9\u90e8\u5206\u5185\u5bb9\u5c31\u4e0d\u5c55\u5f00\u4e86\uff0c\u611f\u5174\u8da3\u7684\u540c\u5b66\u8bf7\u81ea\u884c\u67e5\u9605\u6587\u6863\u3002<\/p>\n<p>&#8212;&#8212;&#8211;\u732b\u54e5\u788e\u788e\u5ff5\u5206\u5272\u7ebf&#8212;&#8212;&#8211;<\/p>\n<p>\u4e3b\u8981\u7684\u5185\u5bb9\u5c31\u7b97\u4ecb\u7ecd\u5b8c\u4e86\uff0c\u5b83\u5f88\u7b80\u5355\uff0c\u5e76\u4e0d\u96be\u7406\u89e3\uff0c\u4e0d\u4f1a\u5e26\u6765\u5b66\u4e60\u7684\u8d1f\u62c5\uff0c\u4e5f\u4e0d\u4f1a\u9020\u6210\u4ec0\u4e48\u610f\u89c1\u5206\u6b67\u3002<\/p>\n<p>\u4f46\u662f\u8bf4\u53e5\u8001\u5b9e\u8bdd\uff0c\u8fd9\u4e2a\u6027\u80fd\u63d0\u5347\u53ef\u80fd\u663e\u5f97\u6709\u70b9\u201c\u8d39\u529b\u4e0d\u8ba8\u597d\u201d\uff1a\u5185\u7f6e\u7c7b\u578b\u7684\u8c03\u7528\u901f\u5ea6\u5e76\u4e0d\u4f1a\u9020\u6210\u4ec0\u4e48\u6027\u80fd\u95ee\u9898\uff08\u5e76\u4e0d\u6162\uff09\uff0c\u800c\u63d0\u5347\u7a7a\u95f4\u4e5f\u4ec5\u662f\u7eb3\u79d2 \/\u5fae\u79d2\u7ea7\u522b\uff0c\u975e\u5e38\u6709\u9650\u3002\u591a\u540d\u6838\u5fc3\u5f00\u53d1\u8005\u82b1\u8d39\u5927\u534a\u5e74\u65f6\u95f4\u548c\u7cbe\u529b\uff0c\u5230\u5e95\u503c\u4e0d\u503c\u5f97\uff1f<\/p>\n<p>\u6211\u4eec\u6050\u6015\u90fd\u6ca1\u6709\u5bf9\u6b64\u4f5c\u51fa\u4ef7\u503c\u8bc4\u5224\u7684\u8d44\u683c\u3002\u4ec1\u8005\u89c1\u4ec1\uff0c\u667a\u8005\u89c1\u667a\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u4e5f\u8bb8\u6211\u4eec\u53ef\u4ee5\u5f80\u4e50\u89c2\u7684\u65b9\u9762\u60f3\uff1a\u5bf9\u4e8e\u8fd9\u79cd\u5fae\u4e0d\u8db3\u9053\u7684\u6027\u80fd\u63d0\u5347\uff0c\u6838\u5fc3\u5f00\u53d1\u8005\u4eec\u90fd\u80fd\u8ba4\u771f\u5bf9\u5f85\u3001\u7cbe\u76ca\u6c42\u7cbe\u3001\u6301\u7eed\u6295\u5165\u3001\u8003\u8651\u5168\u9762\uff0c\u90a3\u5728\u5176\u5b83\u65b9\u9762\u4e0a\u4e5f\u7edd\u4e0d\u4f1a\u900a\u8272\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u6709\u7406\u7531\u5bf9 Python \u7684\u672a\u6765\u4fdd\u6301\u4e50\u89c2\u7684\u5e0c\u671b\uff01<\/p>\n<p>\u5982\u679c\u4f60\u559c\u6b22\u8fd9\u79cd\u98ce\u683c\u7684\u6587\u7ae0\uff0c\u6b22\u8fce\u641c\u7d22\u5173\u6ce8\u516c\u4f17\u53f7\u201cPython \u732b\u201d\u3002\u4eba\u751f\u82e6\u77ed\uff0c\u8ba9\u6211\u4eec\u4e00\u8d77\u7528 Python \uff01<\/p>\n<p>&#8212;&#8212;&#8211;\u732b\u54e5\u788e\u788e\u5ff5\u5206\u5272\u7ebf&#8212;&#8212;&#8211;<\/p>\n<p>\u76f8\u5173\u94fe\u63a5\uff1a<\/p>\n<p>https:\/\/docs.python.org\/3.9\/whatsnew\/changelog.html<\/p>\n<p>https:\/\/www.python.org\/dev\/peps\/pep-0590<\/p>\n<p>https:\/\/bugs.python.org\/issue37207<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/05\/20200519_5ec3d030d65fa.jpg\" alt=\"Python 3.9 \u6027\u80fd\u4f18\u5316\uff1a\u66f4\u5feb\u7684 list()\u3001dict() \u548c range() \u7b49\u5185\u7f6e\u7c7b\u578b\" \/><\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>0<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>Python 3.9 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