{"id":468,"date":"2023-11-12T19:46:27","date_gmt":"2024-01-06T00:14:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/python%e7%9a%84os%e6%a8%a1%e5%9d%97\/"},"modified":"2025-08-02T11:55:34","modified_gmt":"2025-08-02T03:55:34","slug":"python%e7%9a%84os%e6%a8%a1%e5%9d%97","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/python%e7%9a%84os%e6%a8%a1%e5%9d%97\/","title":{"rendered":"Python os\u6a21\u5757\u5b8c\u5168\u6307\u5357\uff1a\u638c\u63e1\u6587\u4ef6\u4e0e\u76ee\u5f55\u64cd\u4f5c\u7684\u5229\u5668"},"content":{"rendered":"<p>\u8fd9\u662f\u6587\u7ae0\u300aPython\u7684os\u6a21\u5757\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51711\u90e8\u5206\uff09\u3002<\/p>\n<p>Python\u7684os\u6a21\u5757\u63d0\u4f9b\u4e86\u7b80\u5355\u800c\u5f3a\u5927\u7684\u51fd\u6570\uff0c\u5141\u8bb8\u6211\u4eec\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u884c\u4ea4\u4e92\uff0c\u83b7\u53d6\u7cfb\u7edf\u4fe1\u606f\uff0c\u751a\u81f3\u5bf9\u8fdb\u7a0b\u8fdb\u884c\u4e00\u5b9a\u7a0b\u5ea6\u7684\u63a7\u5236\u3002\u65e0\u8bba\u662fWindows\u3001Mac\u8fd8\u662fLinux\u5e73\u53f0\uff0cos\u6a21\u5757\u90fd\u80fd\u63d0\u4f9b\u4e00\u81f4\u7684\u64cd\u4f5c\u63a5\u53e3\u3002<\/p>\n<h2>Python\u7684os\u6a21\u5757\u6982\u8ff0<\/h2>\n<p>os\u6a21\u5757\u63d0\u4f9b\u7684\u529f\u80fd\u53ef\u4ee5\u8ba9\u6211\u4eec\u5bf9\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u4efb\u52a1\u8fdb\u884c\u64cd\u4f5c\uff0c\u65e0\u8bba\u662fWindows\u5e73\u53f0\u3001Macintosh\u8fd8\u662fLinux\u90fd\u53ef\u4ee5\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u529f\u80fd\uff0c\u4ee5\u53ca\u6211\u4eec\u53ef\u4ee5\u7528\u5b83\u4eec\u505a\u4ec0\u4e48\u3002\u8ba9\u6211\u4eec\u4ece\u8fd9\u4e9b\u529f\u80fd\u548c\u5b83\u4eec\u63d0\u4f9b\u7684\u4fe1\u606f\u5f00\u59cb\u6211\u4eec\u7684\u5b66\u4e60\u4e4b\u65c5\u3002<\/p>\n<h3>\u5982\u4f55\u5bfc\u5165os\u6a21\u5757<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"Python\u5bfc\u5165os\u6a21\u5757\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648830a4b2f92e6c731bca\/4-0.png\" alt=\"python os import, python os module\" \/><\/div>\n<p>\u5728Python\u4e2d\u4f7f\u7528os\u6a21\u5757\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u5bfc\u5165\u5b83\u3002\u5bfc\u5165os\u6a21\u5757\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"post-pre\"><code>import os<\/code><\/pre>\n<h3>\u83b7\u53d6\u64cd\u4f5c\u7cfb\u7edf\u540d\u79f0\uff1aos.name<\/h3>\n<p>os.name\u51fd\u6570\u8fd4\u56de\u5f53\u524d\u64cd\u4f5c\u7cfb\u7edf\u7684\u540d\u79f0\u3002\u8fd9\u53d6\u51b3\u4e8e\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u3002\u76ee\u524d\uff0c\u5b83\u652f\u6301&#8221;posix&#8221;\u3001&#8221;os2&#8243;\u3001&#8221;ce&#8221;\u3001&#8221;nt&#8221;\u3001&#8221;riscos&#8221;\u548c&#8221;java&#8221;\u7b49\u6807\u8bc6\u3002\u8ba9\u6211\u4eec\u5728\u7cfb\u7edf\u4e0a\u6267\u884c\u8fd9\u4e2a\u51fd\u6570\u770b\u770b\u7ed3\u679c\uff1a<\/p>\n<pre class=\"post-pre\"><code>&gt;&gt;&gt; print(os.name)\r\nposix<\/code><\/pre>\n<p>\u663e\u7136\uff0c\u6839\u636e\u8fd0\u884c\u73af\u5883\u7684\u4e0d\u540c\uff0c\u8fd9\u4e2a\u51fd\u6570\u4f1a\u8f93\u51fa\u4e0d\u540c\u7684\u5e73\u53f0\u6807\u8bc6\u3002\u4f8b\u5982\uff0c\u5728Windows\u7cfb\u7edf\u4e0a\u4f1a\u8fd4\u56de&#8221;nt&#8221;\uff0c\u800c\u5728Linux\u6216Mac\u7cfb\u7edf\u4e0a\u5219\u8fd4\u56de&#8221;posix&#8221;\u3002<\/p>\n<h3>\u8bbf\u95ee\u73af\u5883\u53d8\u91cf\uff1aos.environ<\/h3>\n<p>os.environ\u4e0d\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u800c\u662f\u4e00\u4e2a\u5305\u542b\u6240\u6709\u73af\u5883\u53d8\u91cf\u7684\u6620\u5c04\u5bf9\u8c61\uff08\u5b57\u5178\uff09\uff0c\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u8bbf\u95ee\u7cfb\u7edf\u7684\u73af\u5883\u53d8\u91cf\u3002\u8ba9\u6211\u4eec\u770b\u770b\u793a\u4f8b\u4ee3\u7801\u7247\u6bb5\uff1a<\/p>\n<pre class=\"post-pre\"><code>import os\r\noutput = os.environ['HOME']\r\nprint(output)<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"Python os.environ\u73af\u5883\u53d8\u91cf\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648830a4b2f92e6c731bca\/12-0.png\" alt=\"python os environment variable\" \/><\/div>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u4f1a\u8f93\u51fa\u5f53\u524d\u7528\u6237\u7684\u4e3b\u76ee\u5f55\u8def\u5f84\u3002\u5728Windows\u7cfb\u7edf\u4e2d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528&#8217;USERPROFILE&#8217;\u4ee3\u66ff&#8217;HOME&#8217;\u3002<\/p>\n<h3>\u6267\u884c\u5916\u90e8\u7a0b\u5e8f\uff1aos.execvp<\/h3>\n<p>os.execvp\u51fd\u6570\u662f\u5728\u7cfb\u7edf\u4e0a\u8fd0\u884c\u5176\u4ed6\u547d\u4ee4\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u5b83\u4f1a\u7528\u65b0\u7684\u7a0b\u5e8f\u66ff\u6362\u5f53\u524d\u8fdb\u7a0b\u3002\u8ba9\u6211\u4eec\u6765\u770b\u770b\u8fd9\u4e2a\u51fd\u6570\u7684\u793a\u4f8b\u4ee3\u7801\u7247\u6bb5\uff1a<\/p>\n<pre class=\"post-pre\"><code>import os\r\nprogram = \"python\"\r\narguments = [\"hello.py\"]\r\nprint(os.execvp(program, (program,) + tuple(arguments)))<\/code><\/pre>\n<p>\u4e3a\u4e86\u8fd0\u884c\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u540d\u4e3ahello.py\u7684\u793a\u4f8b\u811a\u672c\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code>print('Hello')<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"Python os.execvp\u6267\u884c\u5916\u90e8\u7a0b\u5e8f\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648830a4b2f92e6c731bca\/18-0.png\" alt=\"python os module, python os execute other script\" \/><\/div>\n<p>\u6ce8\u610f\uff1aexecvp\u51fd\u6570\u4f1a\u66ff\u6362\u5f53\u524d\u8fdb\u7a0b\uff0c\u6240\u4ee5\u5b83\u4e4b\u540e\u7684\u4ee3\u7801\u4e0d\u4f1a\u88ab\u6267\u884c\uff0c\u9664\u975eexecvp\u8c03\u7528\u5931\u8d25\u3002<\/p>\n<h3>\u83b7\u53d6\u7528\u6237ID\uff1aos.getuid<\/h3>\n<p>os.getuid\u51fd\u6570\u8fd4\u56de\u5f53\u524d\u8fdb\u7a0b\u7684\u7528\u6237ID\uff08UID\uff09\u3002\u8fd9\u4e2a\u51fd\u6570\u5728Unix-like\u7cfb\u7edf\u4e0a\u53ef\u7528\uff0c\u4f46\u5728Windows\u7cfb\u7edf\u4e0a\u4e0d\u53ef\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>&gt;&gt;&gt; os.getuid()\r\n501<\/code><\/pre>\n<p>\u6240\u4ee5\uff0c\u5f53\u524d\u8fdb\u7a0b\u7684\u7528\u6237ID\u662f501\u3002\u6ce8\u610f\uff0c\u8fd9\u662f\u7528\u6237ID\uff0c\u4e0d\u662f\u8fdb\u7a0bID\u3002<\/p>\n<h3>\u91cd\u547d\u540d\u6587\u4ef6\uff1aos.rename<\/h3>\n<p>\u901a\u8fc7Python\u7684os.rename\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u91cd\u547d\u540d\u6587\u4ef6\u6216\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>import os\r\nfileDir = \"JournalDev.txt\"\r\nos.rename(fileDir, 'JournalDev_Hi.txt')<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8981\u6267\u884c\u6b64\u64cd\u4f5c\uff0c\u6211\u4eec\u7684\u811a\u672c\u5fc5\u987b\u5177\u6709\u76f8\u5e94\u7684\u6587\u4ef6\u7cfb\u7edf\u6743\u9650\u3002\u5982\u679c\u76ee\u6807\u6587\u4ef6\u540d\u5df2\u5b58\u5728\uff0c\u5728\u67d0\u4e9b\u7cfb\u7edf\u4e0a\u53ef\u80fd\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n<h3>\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\uff1aos.system<\/h3>\n<p>Python\u7684os.system\u51fd\u6570\u5141\u8bb8\u6211\u4eec\u5728Python\u811a\u672c\u4e2d\u8fd0\u884c\u7cfb\u7edf\u547d\u4ee4\uff0c\u5c31\u50cf\u5728\u7ec8\u7aef\u4e2d\u8fd0\u884c\u4e00\u6837\u3002\u4f8b\u5982\uff1a<\/p>\n<pre class=\"post-pre\"><code>import os\r\ncurrentFiles = os.system(\"users > users.txt\")<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"Python os.system\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648830a4b2f92e6c731bca\/30-0.png\" alt=\"Python OS System command\" \/><\/div>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u4f1a\u5c06\u5f53\u524d\u767b\u5f55\u7528\u6237\u7684\u4fe1\u606f\u91cd\u5b9a\u5411\u5230users.txt\u6587\u4ef6\u4e2d\u3002os.system\u8fd4\u56de\u547d\u4ee4\u7684\u9000\u51fa\u72b6\u6001\u7801\uff0c\u901a\u5e38\u4e3a0\u8868\u793a\u6210\u529f\u6267\u884c\u3002<\/p>\n<h3>\u5904\u7406\u64cd\u4f5c\u7cfb\u7edf\u9519\u8bef\uff1aOSError<\/h3>\n<p>Python\u7684OSError\u662f\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u76f8\u5173\u9519\u8bef\u7684\u57fa\u7c7b\uff0c\u5305\u62ecI\/O\u9519\u8bef\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u5728except\u5b50\u53e5\u4e2d\u4f7f\u7528OSError\u6765\u6355\u83b7\u8fd9\u4e9b\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>import os\r\n\r\ntry:\r\n    f = open('abc.txt', 'r')  # \u6587\u4ef6\u4e0d\u5b58\u5728\r\nexcept OSError:\r\n    print('\u53d1\u751f\u9519\u8bef')<\/code><\/pre>\n<p>\u5f53\u5c1d\u8bd5\u6253\u5f00\u4e0d\u5b58\u5728\u7684\u6587\u4ef6\u65f6\uff0c\u4f1a\u5f15\u53d1OSError\u5f02\u5e38\uff0c\u7136\u540e\u88abexcept\u5757\u6355\u83b7\u5e76\u6253\u5370\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<h3>\u83b7\u53d6\u8fdb\u7a0bID\uff1aos.getpid<\/h3>\n<p>os.getpid\u51fd\u6570\u8fd4\u56de\u5f53\u524d\u8fdb\u7a0b\u7684ID\uff08PID\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code>&gt;&gt;&gt; os.getpid()\r\n71622<\/code><\/pre>\n<p>\u6240\u4ee5\uff0c\u5f53\u524d\u8fdb\u7a0b\u7684ID\u662f71622\u3002\u6ce8\u610f\uff0c\u8fd9\u662f\u8fdb\u7a0bID\uff0c\u4e0d\u662f\u7528\u6237ID\u3002<\/p>\n<h3>\u5217\u51fa\u76ee\u5f55\u5185\u5bb9\uff1aos.listdir<\/h3>\n<p>os.listdir\u51fd\u6570\u5217\u51fa\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u548c\u5b50\u76ee\u5f55\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u8def\u5f84\uff0c\u5219\u9ed8\u8ba4\u4e3a\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>&gt;&gt;&gt; import os\r\n&gt;&gt;&gt; os.listdir()\r\n['.DS_Store', '.localized', 'JournalDev', 'Java', 'Python']<\/code><\/pre>\n<p>\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u76ee\u5f55\u548c\u6587\u4ef6\u540d\u7684\u5217\u8868\uff0c\u8be5\u5217\u8868\u662f\u53ef\u8fed\u4ee3\u7684\u3002\u5217\u8868\u4e2d\u7684\u987a\u5e8f\u53d6\u51b3\u4e8e\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n<h3>\u83b7\u53d6\u7cfb\u7edf\u4fe1\u606f\uff1aos.uname<\/h3>\n<p>os.uname\u51fd\u6570\u8fd4\u56de\u5305\u542b\u5f53\u524d\u64cd\u4f5c\u7cfb\u7edf\u8be6\u7ec6\u4fe1\u606f\u7684\u5bf9\u8c61\u3002\u8fd9\u4e2a\u51fd\u6570\u5728Unix-like\u7cfb\u7edf\u4e0a\u53ef\u7528\uff0c\u4f46\u5728Windows\u7cfb\u7edf\u4e0a\u4e0d\u53ef\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>&gt;&gt;&gt; os.uname()\r\nposix.uname_result(sysname='Darwin', nodename='Shubham.local', release='17.2.0', version='Darwin Kernel Version 17.2.0: Fri Sep 29 18:27:05 PDT 2017; root:xnu-4570.20.62~3\/RELEASE_X86_64', machine='x86_64')<\/code><\/pre>\n<p>\u8fd4\u56de\u7684\u4fe1\u606f\u5305\u62ec\u7cfb\u7edf\u540d\u79f0\u3001\u4e3b\u673a\u540d\u3001\u64cd\u4f5c\u7cfb\u7edf\u7248\u672c\u3001\u5185\u6838\u7248\u672c\u548c\u786c\u4ef6\u7c7b\u578b\u7b49\uff0c\u975e\u5e38\u8be6\u7ec6\u3002<\/p>\n<h3>os.path\u6a21\u5757\u4e0eos\u6a21\u5757\u7684\u5173\u7cfb<\/h3>\n<p>os.path\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u8868\u73b0\u5f97\u6709\u4e9b\u7279\u6b8a\u3002\u5b83\u770b\u8d77\u6765\u50cf\u662fos\u6a21\u5757\u7684\u4e00\u4e2a\u5b50\u6a21\u5757\uff0c\u4f46\u5b9e\u9645\u4e0a\uff0cos\u662f\u4e00\u4e2a\u666e\u901a\u6a21\u5757\uff0c\u901a\u8fc7\u4e0esys.module\u914d\u5408\u6765\u652f\u6301os.path\u3002\u8ba9\u6211\u4eec\u6765\u5217\u4e3e\u4e00\u4e0b\u5e55\u540e\u53d1\u751f\u7684\u4e8b\u60c5\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u5f53Python\u542f\u52a8\u65f6\uff0c\u5b83\u4f1a\u5c06\u8bb8\u591a\u6a21\u5757\u52a0\u8f7d\u5230sys.module\u4e2d\u3002<\/li>\n<li>os\u6a21\u5757\u4e5f\u5728Python\u542f\u52a8\u65f6\u88ab\u52a0\u8f7d\u3002\u5b83\u5c06\u8def\u5f84\u76f8\u5173\u7684\u529f\u80fd\u5206\u914d\u7ed9\u7279\u5b9a\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u6a21\u5757\u3002<\/li>\n<li>\u5b83\u901a\u8fc7\u6ce8\u5165sys.modules[&#8216;os.path&#8217;] = 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