{"id":45383,"date":"2020-10-31T23:23:10","date_gmt":"2020-10-31T15:23:10","guid":{"rendered":"http:\/\/www.zhushiyao.com\/?p=45383"},"modified":"2020-10-31T23:23:55","modified_gmt":"2020-10-31T15:23:55","slug":"31521613fc","status":"publish","type":"post","link":"http:\/\/www.zhushiyao.com\/?p=45383","title":{"rendered":"\u5982\u4f55\u7528 Python \u8c03\u7528\u5916\u90e8\u547d\u4ee4"},"content":{"rendered":"
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\u95ee\u9898<\/span><\/strong><\/span><\/p>\n

\u00a0<\/span><\/p>\n

\u4e5f\u8bb8\u5927\u5bb6\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\u9047\u5230\u8fc7\u8981\u7528 Python \u811a\u672c\u6267\u884c\u5916\u90e8\u547d\u4ee4\u7684\u60c5\u51b5\uff0c\u5e76\u4e14\u4f60\u8fd8\u4e0d\u77e5\u9053\u600e\u4e48\u8c03\u7528\u3002\"Stack<\/span><\/p>\n

\u00a0<\/span><\/p>\n

\u6ca1\u5173\u7cfb\uff0c\u65e9\u5728 12 \u5e74\u524d\u5c31\u6709\u7a0b\u5e8f\u5458\u5728 Stack Overflow \u4e0a\u6c42\u52a9\u63d0\u95ee\u5566\u3002<\/span><\/p>\n

\u00a0<\/span><\/p>\n

\"Stack<\/p>\n

\n

\u672c\u6587<\/span>\u4e3a\u5927\u5bb6\u603b\u7ed3\u6574\u7406\u5176\u4e2d\u4e00\u4e9b\u9ad8\u8d5e\u56de\u7b54\uff0c\u4ee5\u5907\u4e0d\u65f6\u4e4b\u9700\uff01<\/span><\/strong><\/p>\n

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\u89e3\u51b3\u65b9\u6cd5<\/span><\/strong><\/span><\/p>\n

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\u65b9\u6cd51\uff1a<\/span><\/strong>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u00a0subprocess \uff0c\u6bd4\u5982\u8981\u6267\u884c <\/span>ls -l<\/span>\u00a0\u547d\u4ee4<\/span><\/p>\n

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    \n
  • <\/li>\n
  • <\/li>\n<\/ul>\n
    import<\/span> subprocess <\/span><\/code>subprocess.run([\"ls\"<\/span>, \"-l\"<\/span>])<\/span><\/code><\/pre>\n<\/section>\n
    Python3.5 \u4e4b\u524d\u7684\u7248\u672c\uff0c\u9700\u8981\u4f7f\u7528 call<\/span><\/p>\n
    \n
      \n
    • <\/li>\n
    • <\/li>\n<\/ul>\n
      import<\/span> subprocess <\/span><\/code>subprocess.call([\"ls\"<\/span>, \"-l\"<\/span>])<\/span><\/code><\/pre>\n<\/section>\n
      \u65b9\u6cd52\uff1a<\/span><\/strong><\/p>\n
      \n
        \n
      • <\/li>\n
      • <\/li>\n
      • <\/li>\n<\/ul>\n
        import os <\/span><\/code>os.system(\"ls -l\"<\/span>) #\u6267\u884c\u547d\u4ee4<\/span><\/span><\/code>os.popen(\"ls -l\"<\/span>).read<\/span>() #\u6267\u884c\u5e76\u8f93\u51fa\u547d\u4ee4\u7684\u6267\u884c\u7ed3\u679c<\/span><\/span><\/code><\/pre>\n<\/section>\n
        \u65b9\u6cd5\u8ba8\u8bba\uff1a<\/span><\/strong><\/span><\/p>\n
        \n
        \u95ee\u9898\u89e3\u51b3\u4e86\uff0c\u90a3\u4e48os.system \u548c subprocess \u90a3\u4e2a\u89e3\u51b3\u65b9\u6cd5\u66f4\u597d\u4e00\u70b9\u5462\uff1f\u8fd9\u91cc\u505a\u7b80\u5355\u8ba8\u8bba\uff0c\u867d\u7136os.system \u548c subprocess \u90fd\u80fd\u5b8c\u6210\u8c03\u7528\u5916\u90e8\u547d\u4ee4\u7684\u529f\u80fd\uff0c\u4f46\u662fsubprocess \u6bd4 system \u66f4\u7075\u6d3b\uff08subprocess \u6211\u4eec\u53ef\u4ee5\u5f97\u5230 stdout,stderr \u4ee5\u53ca\u66f4\u597d\u7684\u9519\u8bef\u5904\u7406\u7b49\u7b49\uff09\u3002\u5e76\u4e14\u5b98\u65b9\u6587\u6863\u4e5f\u662f\u66f4\u5efa\u8bae subprocess \u6a21\u5757\u3002<\/span><\/p>\n
        \n
        \u4e0b\u9762\u662f\u5bf9\u5404\u79cd\u8c03\u7528\u5916\u90e8\u7a0b\u5e8f\u7684\u65b9\u6cd5\u7684\u5c0f\u603b\u7ed3\uff1a<\/span><\/strong><\/span><\/p>\n
        \n
        1\u3001<\/span>os.system(“some_command with args”)<\/span>\uff1a\u5c06\u547d\u4ee4\u548c\u53c2\u6570\u4f20\u7ed9\u7cfb\u7edfshell\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u4e00\u6b21\u6267\u884c\u591a\u6761\u547d\u4ee4\uff0c\u5e76\u4e14\u53ef\u4ee5\u5efa\u7acb\u7ba1\u9053\u91cd\u5b9a\u5411\u4f8b\u5982\uff1a<\/span><\/p>\n
        \n
          \n
        • <\/li>\n<\/ul>\n
          os.system(\"some_command < input_file | another_command > output_file\")<\/span><\/code><\/pre>\n<\/section>\n
          \u5c3d\u7ba1\u8fd9\u79cd\u65b9\u5f0f\u5f88\u7b80\u4fbf\uff0c\u4f46\u662f\u4f60\u4e0d\u5f97\u4e0d\u624b\u5de5\u5904\u7406\u4e00\u4e9b\u7279\u6b8a\u5b57\u7b26\u4f8b\u5982\u7a7a\u683c\u7b49\u3002<\/span><\/p>\n
          \n
          2\u3001<\/span>stream=os.popen(“some_command with args”)<\/span>\uff1a\u5b9e\u73b0\u7684\u529f\u80fd\u548cos.system\u662f\u4e00\u6837\u7684\uff0c\u4f46\u662fos.popen\u4f1a\u8fd4\u56de\u4e00\u4e2a\u7c7b\u6587\u4ef6\u5bf9\u8c61\uff0c\u8ba9\u4f60\u770b\u5230\u547d\u4ee4\u7684\u6267\u884c\u7ed3\u679c\u3002<\/span><\/p>\n
          \n