{"id":2775,"date":"2025-03-14T22:57:24","date_gmt":"2025-03-14T14:57:24","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2775"},"modified":"2025-03-14T22:57:24","modified_gmt":"2025-03-14T14:57:24","slug":"python-__name__-%e4%b8%8e-__main__%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/14\/python-__name__-%e4%b8%8e-__main__%e8%af%a6%e8%a7%a3\/","title":{"rendered":"Python __name__ \u4e0e __main__\u8be6\u89e3"},"content":{"rendered":"\n<p>\u5728 Python \u4e2d\uff0c<code>__name__<\/code> \u548c <code>__main__<\/code> \u662f\u4e24\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u4eec\u7ecf\u5e38\u5728\u6a21\u5757\u548c\u811a\u672c\u7684\u6267\u884c\u6d41\u7a0b\u4e2d\u4f7f\u7528\u3002\u7406\u89e3\u5b83\u4eec\u7684\u4f5c\u7528\uff0c\u5bf9\u4e8e\u7ec4\u7ec7 Python \u9879\u76ee\u548c\u7406\u89e3\u6a21\u5757\u7684\u6267\u884c\u65b9\u5f0f\u975e\u5e38\u91cd\u8981\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. <code>__name__<\/code> \u53d8\u91cf<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4ec0\u4e48\u662f <code>__name__<\/code>\uff1f<\/strong><\/h3>\n\n\n\n<p><code>__name__<\/code> \u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u5185\u7f6e\u53d8\u91cf\uff0c\u7528\u6765\u8868\u793a Python \u6a21\u5757\u7684\u540d\u79f0\u3002\u5b83\u7684\u503c\u5728\u4e0d\u540c\u7684\u60c5\u5883\u4e0b\u4f1a\u6709\u6240\u4e0d\u540c\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5f53\u6a21\u5757\u76f4\u63a5\u8fd0\u884c\u65f6<\/strong>\uff0c<code>__name__<\/code> \u7684\u503c\u4e3a <code>\"__main__\"<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u5f53\u6a21\u5757\u4f5c\u4e3a\u88ab\u5bfc\u5165\u7684\u6a21\u5757\u65f6<\/strong>\uff0c<code>__name__<\/code> \u7684\u503c\u4e3a\u6a21\u5757\u7684\u540d\u5b57\uff08\u5373\u6587\u4ef6\u540d\uff0c\u4e0d\u5e26 <code>.py<\/code> \u6269\u5c55\u540d\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><code>__name__<\/code> \u7684\u4f5c\u7528<\/strong><\/h3>\n\n\n\n<p>\u901a\u8fc7 <code>__name__<\/code> \u53d8\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u5224\u65ad Python \u6587\u4ef6\u662f\u76f4\u63a5\u8fd0\u884c\u7684\uff0c\u8fd8\u662f\u4f5c\u4e3a\u6a21\u5757\u88ab\u5bfc\u5165\u5230\u5176\u4ed6\u6587\u4ef6\u4e2d\u3002\u5982\u679c\u4e00\u4e2a\u6587\u4ef6\u4f5c\u4e3a\u811a\u672c\u76f4\u63a5\u8fd0\u884c\uff0c\u53ef\u4ee5\u6267\u884c\u67d0\u4e9b\u4ee3\u7801\uff1b\u5982\u679c\u4f5c\u4e3a\u6a21\u5757\u5bfc\u5165\uff0c\u5219\u907f\u514d\u6267\u884c\u90a3\u4e9b\u4ee3\u7801\u3002\u8fd9\u901a\u5e38\u7528\u6765\u9632\u6b62\u67d0\u4e9b\u4ee3\u7801\u5728\u5bfc\u5165\u65f6\u88ab\u6267\u884c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. <code>__main__<\/code> \u7684\u4f5c\u7528<\/strong><\/h2>\n\n\n\n<p>\u5f53 Python \u6587\u4ef6\u4f5c\u4e3a\u4e3b\u7a0b\u5e8f\u6267\u884c\u65f6\uff0c<code>__name__<\/code> \u7684\u503c\u662f <code>__main__<\/code>\u3002\u8fd9\u4e2a\u7279\u6027\u5141\u8bb8\u6211\u4eec\u533a\u5206\u76f4\u63a5\u6267\u884c\u7684\u811a\u672c\u548c\u4f5c\u4e3a\u6a21\u5757\u88ab\u5bfc\u5165\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u901a\u8fc7 <code>if __name__ == \"__main__\":<\/code> \u7ed3\u6784\u6765\u63a7\u5236\u6267\u884c<\/strong><\/h3>\n\n\n\n<p>\u4e3a\u4e86\u8ba9\u4ee3\u7801\u5728\u6a21\u5757\u88ab\u5bfc\u5165\u65f6\u4e0d\u81ea\u52a8\u6267\u884c\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u5c06\u5e0c\u671b\u5728\u76f4\u63a5\u8fd0\u884c\u65f6\u6267\u884c\u7684\u4ee3\u7801\u653e\u5165 <code>if __name__ == \"__main__\":<\/code> \u8bed\u53e5\u5757\u4e2d\u3002\u8fd9\u6837\uff0c\u53ea\u6709\u5728\u811a\u672c\u76f4\u63a5\u8fd0\u884c\u65f6\uff0c\u624d\u4f1a\u6267\u884c\u8fd9\u90e8\u5206\u4ee3\u7801\uff1b\u5982\u679c\u811a\u672c\u4f5c\u4e3a\u6a21\u5757\u88ab\u5bfc\u5165\uff0c\u5219\u4e0d\u4f1a\u6267\u884c\u8fd9\u90e8\u5206\u4ee3\u7801\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. \u4f7f\u7528 <code>__name__<\/code> \u548c <code>__main__<\/code> \u7684\u793a\u4f8b<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b 1\uff1a\u7b80\u5355\u7684 <code>__name__<\/code> \u548c <code>__main__<\/code> \u4f7f\u7528<\/strong><\/h3>\n\n\n\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a Python \u6587\u4ef6 <code>mymodule.py<\/code>\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># mymodule.py\n\ndef greet(name):\n    print(f\"Hello, {name}!\")\n\nif __name__ == \"__main__\":\n    greet(\"Alice\")<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u76f4\u63a5\u8fd0\u884c <code>mymodule.py<\/code><\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u5f53\u76f4\u63a5\u8fd0\u884c <code>mymodule.py<\/code> \u65f6\uff0c<code>__name__<\/code> \u7684\u503c\u4e3a <code>__main__<\/code>\uff0c\u6240\u4ee5 <code>greet(\"Alice\")<\/code> \u4f1a\u88ab\u6267\u884c\uff0c\u8f93\u51fa\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Hello, Alice!<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5c06 <code>mymodule.py<\/code> \u4f5c\u4e3a\u6a21\u5757\u5bfc\u5165<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u5728\u53e6\u4e00\u4e2a\u6587\u4ef6 <code>main.py<\/code> \u4e2d\u5bfc\u5165 <code>mymodule<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># main.py\nimport mymodule<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\uff0c<code>mymodule.py<\/code> \u4e2d\u7684 <code>if __name__ == \"__main__\":<\/code> \u8bed\u53e5\u5757\u4e0d\u4f1a\u88ab\u6267\u884c\uff0c\u56e0\u4e3a <code>__name__<\/code> \u7684\u503c\u662f <code>mymodule<\/code>\uff0c\u800c\u4e0d\u662f <code>__main__<\/code>\u3002\u56e0\u6b64\uff0c<code>greet(\"Alice\")<\/code> \u4e0d\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b 2\uff1a\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u7ed3\u6784<\/strong><\/h3>\n\n\n\n<p>\u8fd9\u79cd <code>if __name__ == \"__main__\":<\/code> \u7ed3\u6784\u901a\u5e38\u7528\u4e8e\u7ec4\u7ec7\u4ee3\u7801\uff0c\u7279\u522b\u662f\u5728\u5f00\u53d1\u8f83\u4e3a\u590d\u6742\u7684\u6a21\u5757\u65f6\u3002\u6bd4\u5982\uff0c\u6211\u4eec\u5e38\u5e38\u5728\u6a21\u5757\u4e2d\u63d0\u4f9b\u51fd\u6570\u6216\u7c7b\u7684\u5b9a\u4e49\uff0c\u5e76\u5728\u6a21\u5757\u5185\u90e8\u4f7f\u7528 <code>if __name__ == \"__main__\":<\/code> \u6765\u6267\u884c\u4e00\u4e9b\u6d4b\u8bd5\u4ee3\u7801\u6216\u793a\u4f8b\uff0c\u907f\u514d\u5728\u5bfc\u5165\u65f6\u6267\u884c\u8fd9\u4e9b\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># calc.py\n\ndef add(x, y):\n    return x + y\n\ndef subtract(x, y):\n    return x - y\n\n# \u53ea\u6709\u5f53\u76f4\u63a5\u8fd0\u884c\u8be5\u6587\u4ef6\u65f6\uff0c\u624d\u4f1a\u6267\u884c\u8fd9\u4e9b\u6d4b\u8bd5\nif __name__ == \"__main__\":\n    print(add(3, 4))        # \u8f93\u51fa: 7\n    print(subtract(10, 5))  # \u8f93\u51fa: 5<\/code><\/pre>\n\n\n\n<p>\u5982\u679c <code>calc.py<\/code> \u88ab\u5bfc\u5165\u5230\u53e6\u4e00\u4e2a\u811a\u672c\u4e2d\u4f7f\u7528\uff0c<code>add<\/code> \u548c <code>subtract<\/code> \u51fd\u6570\u5c31\u80fd\u88ab\u6b63\u5e38\u4f7f\u7528\uff0c\u800c\u4e0d\u4f1a\u8fd0\u884c <code>if __name__ == \"__main__\":<\/code> \u4e2d\u7684\u6d4b\u8bd5\u4ee3\u7801\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. \u4e3a\u4ec0\u4e48\u4f7f\u7528 <code>__name__<\/code> \u548c <code>__main__<\/code><\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u9632\u6b62\u5728\u5bfc\u5165\u65f6\u6267\u884c\u4ee3\u7801<\/strong><\/h3>\n\n\n\n<p>\u4f7f\u7528 <code>if __name__ == \"__main__\":<\/code> \u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u5728\u6a21\u5757\u88ab\u5bfc\u5165\u65f6\u81ea\u52a8\u6267\u884c\u67d0\u4e9b\u4ee3\u7801\u3002\u8fd9\u5bf9\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u975e\u5e38\u91cd\u8981\u3002\u4f60\u53ef\u4ee5\u5728\u6a21\u5757\u4e2d\u7f16\u5199\u4e00\u4e9b\u6d4b\u8bd5\u3001\u793a\u4f8b\u4ee3\u7801\u6216\u4e34\u65f6\u8c03\u8bd5\u4ee3\u7801\uff0c\u800c\u8fd9\u4e9b\u4ee3\u7801\u53ea\u4f1a\u5728\u8be5\u6a21\u5757\u4f5c\u4e3a\u811a\u672c\u6267\u884c\u65f6\u8fd0\u884c\uff0c\u4e0d\u4f1a\u5728\u5bfc\u5165\u65f6\u6267\u884c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u6a21\u5757\u5316\u548c\u53ef\u91cd\u7528\u6027<\/strong><\/h3>\n\n\n\n<p>\u901a\u8fc7\u8fd9\u79cd\u673a\u5236\uff0cPython \u4ee3\u7801\u53ef\u4ee5\u65e2\u4f5c\u4e3a\u72ec\u7acb\u811a\u672c\u8fd0\u884c\uff0c\u53c8\u53ef\u4ee5\u4f5c\u4e3a\u6a21\u5757\u88ab\u5bfc\u5165\u5230\u5176\u4ed6\u7a0b\u5e8f\u4e2d\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u6a21\u5757\u5316\u7684\u65b9\u5f0f\u6765\u7ec4\u7ec7\u4ee3\u7801\uff0c\u65e2\u4fdd\u8bc1\u4e86\u811a\u672c\u7684\u72ec\u7acb\u6027\uff0c\u53c8\u80fd\u6700\u5927\u9650\u5ea6\u5730\u63d0\u9ad8\u6a21\u5757\u7684\u590d\u7528\u6027\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. \u603b\u7ed3<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>__name__<\/code><\/strong>\uff1a\u8868\u793a\u5f53\u524d\u6a21\u5757\u7684\u540d\u79f0\u3002<\/li>\n\n\n\n<li><strong><code>__main__<\/code><\/strong>\uff1a\u5f53 Python \u811a\u672c\u76f4\u63a5\u6267\u884c\u65f6\uff0c<code>__name__<\/code> \u7684\u503c\u662f <code>__main__<\/code>\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>if __name__ == \"__main__\":<\/code> \u53ef\u4ee5\u8ba9\u6a21\u5757\u5728\u76f4\u63a5\u6267\u884c\u65f6\u6267\u884c\u67d0\u4e9b\u4ee3\u7801\uff0c\u800c\u5728\u4f5c\u4e3a\u6a21\u5757\u5bfc\u5165\u65f6\u4e0d\u6267\u884c\u8fd9\u4e9b\u4ee3\u7801\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u79cd\u673a\u5236\u5e2e\u52a9\u6211\u4eec\u5728\u7f16\u5199\u6a21\u5757\u65f6\u4fdd\u6301\u7075\u6d3b\u6027\u548c\u53ef\u91cd\u7528\u6027\uff0c\u662f Python \u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u7279\u6027\u3002\u66f4\u591a\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Python \u4e2d\uff0c__name__ \u548c __main__ \u662f\u4e24\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u4eec\u7ecf\u5e38\u5728\u6a21\u5757\u548c\u811a\u672c\u7684\u6267\u884c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2776,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"class_list":["post-2775","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python-3-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2775"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2775\/revisions"}],"predecessor-version":[{"id":2777,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2775\/revisions\/2777"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/2776"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}