{"id":82,"date":"2026-06-13T17:57:01","date_gmt":"2026-06-13T09:57:01","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=82"},"modified":"2026-06-13T17:57:01","modified_gmt":"2026-06-13T09:57:01","slug":"python-__name__-%e4%b8%8e-__main__","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/06\/13\/python-__name__-%e4%b8%8e-__main__\/","title":{"rendered":"Python __name__ \u4e0e __main__"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728 Python \u4e2d\uff0c<code>__name__<\/code> \u548c <code>'__main__'<\/code> \u7684\u7ec4\u5408\uff08\u5373 <code>if __name__ == '__main__':<\/code>\uff09\u662f Python \u7f16\u7a0b\u4e2d\u6700\u7ecf\u5178\u3001\u6700\u91cd\u8981\u7684\u60ef\u7528\u6cd5\u4e4b\u4e00\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u53e5\u8bdd\u603b\u7ed3\u5b83\u7684\u6838\u5fc3\u4f5c\u7528\uff1a<strong>\u5224\u65ad\u5f53\u524d Python \u6587\u4ef6\u662f\u88ab\u201c\u76f4\u63a5\u8fd0\u884c\u201d\u7684\uff0c\u8fd8\u662f\u88ab\u5176\u4ed6\u6587\u4ef6\u201c\u4f5c\u4e3a\u6a21\u5757\u5bfc\u5165\u201d\u7684\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u6211\u5c06\u4ece\u5e95\u5c42\u539f\u7406\u3001\u4ee3\u7801\u6f14\u793a\u3001\u6838\u5fc3\u4ef7\u503c\u5230\u6700\u4f73\u5b9e\u8df5\uff0c\u4e3a\u4f60\u5f7b\u5e95\u8bb2\u900f\u8fd9\u4e2a\u77e5\u8bc6\u70b9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001 \u6838\u5fc3\u539f\u7406\uff1a<code>__name__<\/code> \u5230\u5e95\u662f\u4ec0\u4e48\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>__name__<\/code> \u662f Python \u7684\u4e00\u4e2a<strong>\u5185\u7f6e\u5168\u5c40\u53d8\u91cf<\/strong>\uff08\u524d\u540e\u6709\u53cc\u4e0b\u5212\u7ebf\uff0c\u79f0\u4e3a\u201c\u9b54\u672f\u53d8\u91cf\u201d\uff09\u3002\u5f53 Python \u89e3\u91ca\u5668\u8bfb\u53d6\u4e00\u4e2a\u6e90\u6587\u4ef6\u65f6\uff0c\u5b83\u4f1a\u5728\u6267\u884c\u6587\u4ef6\u4e2d\u7684\u4ee3\u7801\u4e4b\u524d\uff0c\u81ea\u52a8\u4e3a\u8fd9\u4e2a\u6587\u4ef6\u8bbe\u7f6e <code>__name__<\/code> \u7684\u503c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u7684\u503c\u53ea\u6709\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u76f4\u63a5\u8fd0\u884c\u8be5\u6587\u4ef6<\/strong>\uff1a<br>\u5982\u679c\u4f60\u5728\u7ec8\u7aef\u6267\u884c <code>python my_script.py<\/code>\uff0cPython \u4f1a\u5c06\u8be5\u6587\u4ef6\u7684 <code>__name__<\/code> \u8bbe\u7f6e\u4e3a\u5b57\u7b26\u4e32 <code>'__main__'<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u88ab\u5176\u4ed6\u6587\u4ef6\u5bfc\u5165<\/strong>\uff1a<br>\u5982\u679c\u53e6\u4e00\u4e2a\u6587\u4ef6\u6267\u884c\u4e86 <code>import my_script<\/code>\uff0cPython \u4f1a\u5c06 <code>my_script.py<\/code> \u7684 <code>__name__<\/code> \u8bbe\u7f6e\u4e3a\u5b83\u7684<strong>\u6a21\u5757\u540d<\/strong>\uff08\u5373 <code>'my_script'<\/code>\uff0c\u4e0d\u5e26 <code>.py<\/code> \u540e\u7f00\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001 \u76f4\u89c2\u4ee3\u7801\u6f14\u793a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u521b\u5efa\u4e24\u4e2a\u6587\u4ef6\u6765\u89c2\u5bdf <code>__name__<\/code> \u7684\u53d8\u5316\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6587\u4ef6 1\uff1a<code>calculator.py<\/code> (\u4f5c\u4e3a\u6a21\u5757)<\/h4>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># calculator.py\n\nprint(f&quot;\ud83d\udc49 [\u52a0\u8f7d\u65f6] calculator.py \u7684 __name__ \u503c\u662f: &#039;{__name__}&#039;&quot;)\n\ndef add(a, b):\n    return a + b\n\n# \u6838\u5fc3\u5224\u65ad\nif __name__ == &#039;__main__&#039;:\n    print(&quot;\u2705 [\u6267\u884c\u65f6] calculator.py \u662f\u88ab\u76f4\u63a5\u8fd0\u884c\u7684\uff01&quot;)\n    print(&quot;\u6d4b\u8bd5\u7ed3\u679c:&quot;, add(2, 3))\nelse:\n    print(&quot;\u26a0\ufe0f [\u6267\u884c\u65f6] calculator.py \u662f\u88ab\u5176\u4ed6\u6587\u4ef6\u5bfc\u5165\u7684\uff01&quot;)<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">\u6587\u4ef6 2\uff1a<code>main_app.py<\/code> (\u4e3b\u7a0b\u5e8f)<\/h4>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># main_app.py\n\nprint(f&quot;\ud83d\udc49 [\u52a0\u8f7d\u65f6] main_app.py \u7684 __name__ \u503c\u662f: &#039;{__name__}&#039;&quot;)\n\nimport calculator  # \u5bfc\u5165\u4e0a\u9762\u7684\u6a21\u5757\n\nprint(&quot;\u5728 main_app \u4e2d\u8c03\u7528\u52a0\u6cd5:&quot;, calculator.add(10, 20))<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">\u8fd0\u884c\u7ed3\u679c\u5bf9\u6bd4\uff1a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u573a\u666f A\uff1a\u76f4\u63a5\u8fd0\u884c <code>calculator.py<\/code><\/strong><\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">$ python calculator.py\n\ud83d\udc49 [\u52a0\u8f7d\u65f6] calculator.py \u7684 __name__ \u503c\u662f: &#039;__main__&#039;\n\u2705 [\u6267\u884c\u65f6] calculator.py \u662f\u88ab\u76f4\u63a5\u8fd0\u884c\u7684\uff01\n\u6d4b\u8bd5\u7ed3\u679c: 5<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u573a\u666f B\uff1a\u8fd0\u884c <code>main_app.py<\/code> (\u5bfc\u5165 <code>calculator<\/code>)<\/strong><\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">$ python main_app.py\n\ud83d\udc49 [\u52a0\u8f7d\u65f6] main_app.py \u7684 __name__ \u503c\u662f: &#039;__main__&#039;\n\ud83d\udc49 [\u52a0\u8f7d\u65f6] calculator.py \u7684 __name__ \u503c\u662f: &#039;calculator&#039;\n\u26a0\ufe0f [\u6267\u884c\u65f6] calculator.py \u662f\u88ab\u5176\u4ed6\u6587\u4ef6\u5bfc\u5165\u7684\uff01\n\u5728 main_app \u4e2d\u8c03\u7528\u52a0\u6cd5: 30<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001 \u4e3a\u4ec0\u4e48\u5fc5\u987b\u8981\u6709\u8fd9\u4e2a\u5224\u65ad\uff1f\uff08\u6838\u5fc3\u4ef7\u503c\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4e0d\u52a0 <code>if __name__ == '__main__':<\/code>\uff0c\u4f1a\u5bfc\u81f4\u4e25\u91cd\u7684 <strong>\u201c\u526f\u4f5c\u7528\u201d\uff08Side Effects\uff09<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe <code>calculator.py<\/code> \u6ca1\u6709\u8fd9\u4e2a\u5224\u65ad\uff0c\u4e14\u672b\u5c3e\u76f4\u63a5\u5199\u4e86\u6d4b\u8bd5\u4ee3\u7801\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u7cdf\u7cd5\u7684 calculator.py\ndef add(a, b): return a + b\n\nprint(&quot;\u6b63\u5728\u6d4b\u8bd5\u52a0\u6cd5:&quot;, add(2, 3)) # \ud83d\udc48 \u9876\u5c42\u4ee3\u7801\uff0c\u6ca1\u6709\u7f29\u8fdb<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4f60\u5728 <code>main_app.py<\/code> \u4e2d <code>import calculator<\/code> \u65f6\uff0c<strong>\u8fd9\u884c\u6d4b\u8bd5\u4ee3\u7801\u4f1a\u88ab\u7acb\u5373\u6267\u884c\u5e76\u6253\u5370\u51fa\u6765<\/strong>\uff0c\u6c61\u67d3\u4e86\u4e3b\u7a0b\u5e8f\u7684\u8f93\u51fa\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u66f4\u5371\u9669\u7684\u526f\u4f5c\u7528\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u610f\u5916\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u6216\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/li>\n\n\n\n<li>\u610f\u5916\u4fee\u6539\u4e86\u5168\u5c40\u914d\u7f6e\u6587\u4ef6\u3002<\/li>\n\n\n\n<li>\u610f\u5916\u542f\u52a8\u4e86 Web \u670d\u52a1\u5668\uff08\u5982 Flask\/FastAPI \u7684 <code>app.run()<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>if __name__ == '__main__':<\/code> \u5c31\u50cf\u4e00\u4e2a\u5b89\u5168\u9600\uff0c\u786e\u4fdd\u6d4b\u8bd5\u4ee3\u7801\u6216\u542f\u52a8\u4ee3\u7801\u53ea\u5728\u201c\u76f4\u63a5\u8fd0\u884c\u201d\u65f6\u89e6\u53d1\uff0c\u800c\u5728\u201c\u88ab\u5bfc\u5165\u201d\u65f6\u4fdd\u6301\u9759\u9ed8\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u3001 \u73b0\u4ee3 Python \u6700\u4f73\u5b9e\u8df5\u6a21\u677f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5b9e\u9645\u5de5\u7a0b\u4e2d\uff0c\u6211\u4eec\u901a\u5e38\u4e0d\u4f1a\u628a\u6267\u884c\u903b\u8f91\u76f4\u63a5\u5199\u5728 <code>if<\/code> \u8bed\u53e5\u5757\u91cc\uff0c\u800c\u662f\u5c01\u88c5\u6210\u4e00\u4e2a <code>main()<\/code> \u51fd\u6570\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff1a\u53d8\u91cf\u4f5c\u7528\u57df\u66f4\u6e05\u6670\uff0c\u4e14\u65b9\u4fbf\u5176\u4ed6\u6a21\u5757\u590d\u7528\u6216\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><span>18<\/span><span>19<\/span><span>20<\/span><span>21<\/span><span>22<\/span><span>23<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">import sys\nimport logging\n\n# 1. \u5b9a\u4e49\u4e1a\u52a1\u903b\u8f91\u51fd\u6570\ndef process_data(file_path: str):\n    print(f&quot;\u6b63\u5728\u5904\u7406\u6587\u4ef6: {file_path}&quot;)\n    # ... \u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91 ...\n\n# 2. \u5b9a\u4e49\u4e3b\u5165\u53e3\u51fd\u6570\ndef main():\n    # \u53ef\u4ee5\u5728\u8fd9\u91cc\u89e3\u6790\u547d\u4ee4\u884c\u53c2\u6570\n    if len(sys.argv) &lt; 2:\n        print(&quot;\u7528\u6cd5: python script.py &lt;file_path&gt;&quot;)\n        sys.exit(1)\n\n    file_path = sys.argv[1]\n    process_data(file_path)\n\n# 3. \u5b89\u5168\u9600\uff1a\u4ec5\u5728\u76f4\u63a5\u8fd0\u884c\u65f6\u6267\u884c main()\nif __name__ == &#039;__main__&#039;:\n    # \u53ef\u4ee5\u5728\u8fd9\u91cc\u914d\u7f6e\u4ec5\u5728\u76f4\u63a5\u8fd0\u884c\u65f6\u624d\u751f\u6548\u7684\u65e5\u5fd7\u7ea7\u522b\u7b49\n    logging.basicConfig(level=logging.INFO)\n    main()<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e94\u3001 \u8fdb\u9636\u77e5\u8bc6\uff1a<code>__main__.py<\/code> \u6587\u4ef6<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9664\u4e86 <code>__name__ == '__main__'<\/code> \u8fd9\u4e2a\u53d8\u91cf\uff0cPython \u8fd8\u6709\u4e00\u4e2a\u7279\u6b8a\u7684\u6587\u4ef6\u540d\uff1a<code>__main__.py<\/code>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5305\uff08\u6587\u4ef6\u5939\uff09\uff0c\u5e76\u4e14\u5728\u5176\u4e2d\u653e\u7f6e\u4e86\u4e00\u4e2a\u540d\u4e3a <code>__main__.py<\/code> \u7684\u6587\u4ef6\uff0c\u4f60\u5c31\u53ef\u4ee5<strong>\u76f4\u63a5\u8fd0\u884c\u6574\u4e2a\u5305<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u76ee\u5f55\u7ed3\u6784<\/strong>\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">my_package\/\n    \u251c\u2500\u2500 __init__.py\n    \u251c\u2500\u2500 core.py\n    \u2514\u2500\u2500 __main__.py   # \ud83d\udc48 \u7279\u6b8a\u6587\u4ef6<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>__main__.py<\/code> \u7684\u5185\u5bb9<\/strong>\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># my_package\/__main__.py\nprint(&quot;\u6b63\u5728\u542f\u52a8 my_package \u7684\u547d\u4ee4\u884c\u5de5\u5177...&quot;)\nfrom . import core\ncore.run()<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8fd0\u884c\u65b9\u5f0f<\/strong>\uff1a<br>\u6b64\u65f6\uff0c\u4f60\u4e0d\u9700\u8981\u6307\u5b9a\u5177\u4f53\u7684 <code>.py<\/code> \u6587\u4ef6\uff0c\u53ea\u9700\u4f7f\u7528 <code>-m<\/code> (module) \u53c2\u6570\u8fd0\u884c\u5305\u540d\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">python -m my_package<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u6ce8\uff1a\u8fd9\u5728\u5f00\u53d1\u547d\u4ee4\u884c\u5de5\u5177\uff08CLI\uff09\u6216\u5927\u578b\u9879\u76ee\uff08\u5982 <code>python -m venv<\/code> \u6216 <code>python -m http.server<\/code>\uff09\u65f6\u975e\u5e38\u5e38\u89c1\u3002<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>__name__<\/code> \u662f Python \u81ea\u52a8\u8bbe\u7f6e\u7684\u5185\u7f6e\u53d8\u91cf\u3002<\/li>\n\n\n\n<li>\u76f4\u63a5\u8fd0\u884c\u6587\u4ef6\u65f6\uff0c\u5b83\u662f <code>'__main__'<\/code>\uff1b\u88ab\u5bfc\u5165\u65f6\uff0c\u5b83\u662f\u6a21\u5757\u540d\u3002<\/li>\n\n\n\n<li><code>if __name__ == '__main__':<\/code> \u662f\u9632\u6b62\u6a21\u5757\u88ab\u5bfc\u5165\u65f6\u4ea7\u751f\u610f\u5916\u526f\u4f5c\u7528\u7684<strong>\u6807\u51c6\u5b89\u5168\u673a\u5236<\/strong>\u3002<\/li>\n\n\n\n<li>\u6700\u4f73\u5b9e\u8df5\u662f\u5c06\u6267\u884c\u903b\u8f91\u5c01\u88c5\u5728 <code>main()<\/code> \u51fd\u6570\u4e2d\uff0c\u5e76\u5728\u8be5\u5224\u65ad\u4e0b\u8c03\u7528\u5b83\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u5728\u4ee3\u7801\u4e2d\u9047\u5230\u4e86\u4e0e\u5bfc\u5165\u76f8\u5173\u7684\u5947\u602a\u884c\u4e3a\uff08\u6bd4\u5982\u4ee3\u7801\u83ab\u540d\u5176\u5999\u88ab\u6267\u884c\u4e86\u4e24\u6b21\uff09\uff0c99% \u7684\u60c5\u51b5\u90fd\u662f\u56e0\u4e3a\u7f3a\u5c11\u6216\u8bef\u7528\u4e86\u8fd9\u4e2a\u5224\u65ad\u3002\u6709\u5176\u4ed6\u7591\u95ee\u968f\u65f6\u95ee\u6211\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Python \u4e2d\uff0c__name__ \u548c &#8216;__&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-82","post","type-post","status-publish","format-standard","hentry","category-python-3-"],"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/82","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=82"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/82\/revisions"}],"predecessor-version":[{"id":83,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/82\/revisions\/83"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=82"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=82"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=82"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}