{"id":3004,"date":"2025-05-28T16:21:52","date_gmt":"2025-06-04T09:10:52","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3004"},"modified":"2025-06-04T16:21:52","modified_gmt":"2025-06-04T09:10:52","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84globals%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84globals%e5%87%bd%e6%95%b8\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Python \u4e2d\u7684 `globals()` \u51fd\u6578\uff1a\u4f7f\u7528\u8207\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Python, globals(), Python globals, Python \u7a0b\u5f0f\u6559\u5b78\"><\/p>\n<h1>\u6df1\u5165\u4e86\u89e3 Python \u4e2d\u7684 <code>globals()<\/code> \u51fd\u6578<\/h1>\n<p>\u5728 Python \u4e2d\uff0c`globals()` \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u8f15\u9b06\u53d6\u5f97\u7576\u524d\u6a21\u7d44\u4e2d\u5b9a\u7fa9\u7684\u5168\u5c40\u8b8a\u6578\u30022025 \u5e74\u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\u8b93\u6211\u5011\u80fd\u66f4\u6709\u6548\u5730\u4f7f\u7528\u9019\u500b\u51fd\u6578\uff0c\u4ee5\u4e0b\u5c07\u5e36\u4f60\u6df1\u5165\u4e86\u89e3\u3002<\/p>\n<h2>\u4ec0\u9ebc\u662f <code>globals()<\/code> \u51fd\u6578\uff1f<\/h2>\n<p>`globals()` \u51fd\u6578\u6703\u56de\u50b3\u4e00\u500b\u5b57\u5178\uff0c\u8a72\u5b57\u5178\u5305\u542b\u4e86\u7576\u524d\u6a21\u7d44\u4e2d\u6240\u6709\u5168\u5c40\u8b8a\u6578\u7684\u540d\u7a31\u8207\u5176\u5c0d\u61c9\u7684\u503c\u3002\u9019\u4f7f\u5f97\u5728\u5927\u578b\u5c08\u6848\u4e2d\u5b58\u53d6\u5168\u5c40\u8b8a\u6578\u8b8a\u5f97\u66f4\u52a0\u65b9\u4fbf\u3002<\/p>\n<h2>\u5982\u4f55\u4f7f\u7528 <code>globals()<\/code> \u51fd\u6578<\/h2>\n<p>\u4f7f\u7528 `globals()` \u51fd\u6578\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u5728\u7a0b\u5f0f\u78bc\u4e2d\u52a0\u5165\u4ee5\u4e0b\u4e00\u884c\uff1a<\/p>\n<pre class=\"brush: python\">\nglobals()\n<\/pre>\n<p>\u9019\u6a23\u5c31\u53ef\u4ee5\u53d6\u5f97\u7576\u524d\u6a21\u7d44\u4e2d\u5b9a\u7fa9\u7684\u5168\u5c40\u8b8a\u6578\uff0c\u4e26\u4ee5\u5b57\u5178\u7684\u5f62\u5f0f\u56de\u50b3\u3002<\/p>\n<h2>\u5be6\u4f5c\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <span style=\"color: #009900;\">my_module.py<\/span> \u7684\u6a21\u7d44\uff0c\u5176\u4e2d\u5b9a\u7fa9\u4e86\u4e00\u500b\u5168\u5c40\u8b8a\u6578 <span style=\"color: #009900;\">my_var<\/span>\uff1a<\/p>\n<pre class=\"brush: python\">\nmy_var = \"Hello World!\"\n<\/pre>\n<p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `globals()` \u51fd\u6578\u4f86\u53d6\u5f97\u9019\u500b\u8b8a\u6578\u7684\u503c\uff1a<\/p>\n<pre class=\"brush: python\">\nimport my_module\n\nglobals_dict = globals()\n\nprint(globals_dict[\"my_var\"])\n# \u8f38\u51fa\uff1aHello World!\n<\/pre>\n<h2>\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 `globals()` \u51fd\u6578\u6642\uff0c\u5982\u679c\u4f60\u5617\u8a66\u8a2a\u554f\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u5168\u5c40\u8b8a\u6578\uff0c\u5c07\u6703\u5f15\u767c `KeyError`\u3002\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: python\">\ntry:\n    print(globals_dict[\"non_existent_var\"])\nexcept KeyError:\n    print(\"\u8a72\u8b8a\u6578\u4e0d\u5b58\u5728\uff01\")\n<\/pre>\n<p>\u9019\u6a23\u7684\u932f\u8aa4\u8655\u7406\u80fd\u6709\u6548\u907f\u514d\u7a0b\u5f0f\u5d29\u6f70\u3002<\/p>\n<h2>\u5ef6\u4f38\u61c9\u7528<\/h2>\n<p>`globals()` \u51fd\u6578\u4e0d\u50c5\u80fd\u7372\u53d6\u5168\u5c40\u8b8a\u6578\uff0c\u9084\u80fd\u7528\u65bc\u52d5\u614b\u4fee\u6539\u5168\u5c40\u8b8a\u6578\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904e `globals()` \u4f86\u65b0\u589e\u8b8a\u6578\uff1a<\/p>\n<pre class=\"brush: python\">\nglobals()[\"new_var\"] = \"\u65b0\u8b8a\u6578\"\nprint(new_var)  # \u8f38\u51fa\uff1a\u65b0\u8b8a\u6578\n<\/pre>\n<p>\u9019\u7a2e\u6280\u5de7\u5728\u67d0\u4e9b\u60c5\u5883\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u52d5\u614b\u751f\u6210\u8b8a\u6578\u540d\u6642\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>`globals()` \u51fd\u6578\u5728 Python \u4e2d\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9748\u6d3b\u5730\u7ba1\u7406\u5168\u5c40\u8b8a\u6578\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528\u9019\u500b\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5f0f\u7684\u53ef\u8b80\u6027\u8207\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a Python \u7684\u76f8\u95dc\u5167\u5bb9\uff0c\u5efa\u8b70\u53c3\u8003 [\u9019\u88e1](https:\/\/vocus.cc\/article\/64e3d6a4fd897300013ab0a8)\uff0c\u8b93\u4f60\u5728\u7a0b\u5f0f\u5b78\u7fd2\u4e4b\u8def\u4e0a\u66f4\u9032\u4e00\u6b65\uff01<\/p>\n<h2>Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<h3>1. <code>globals()<\/code> \u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u4fee\u6539\u5168\u5c40\u8b8a\u6578\u55ce\uff1f<\/h3>\n<p>\u662f\u7684\uff0c`globals()` \u51fd\u6578\u56de\u50b3\u7684\u5b57\u5178\u53ef\u4ee5\u7528\u4f86\u4fee\u6539\u5168\u5c40\u8b8a\u6578\uff0c\u9019\u5c0d\u65bc\u52d5\u614b\u751f\u6210\u8b8a\u6578\u540d\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n<h3>2. \u4f7f\u7528 <code>globals()<\/code> \u51fd\u6578\u6642\u6709\u4ec0\u9ebc\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\uff1f<\/h3>\n<p>\u5728\u4f7f\u7528 `globals()` \u51fd\u6578\u6642\uff0c\u9700\u8981\u6ce8\u610f\u907f\u514d\u8a2a\u554f\u4e0d\u5b58\u5728\u7684\u8b8a\u6578\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4 `KeyError`\u3002<\/p>\n<h3>3. <code>globals()<\/code> \u8207 <code>locals()<\/code> \u6709\u4ec0\u9ebc\u5340\u5225\uff1f<\/h3>\n<p>`globals()` \u53d6\u5f97\u5168\u5c40\u8b8a\u6578\uff0c\u800c `locals()` \u5247\u662f\u53d6\u5f97\u7576\u524d\u4f5c\u7528\u57df\u5167\u7684\u5c40\u90e8\u8b8a\u6578\u3002\u9019\u5169\u8005\u5728\u4e0d\u540c\u7684\u60c5\u5883\u4e0b\u5404\u6709\u5176\u7528\u3002<br \/>\n&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>globals()\u51fd\u6578\u662fPython\u4e2d\u7684\u5167\u7f6e\u51fd\u6578\uff0c\u53ef\u4ee5\u7528\u4f86\u8fd4\u56de\u7576\u524d\u6a21\u584a\u4e2d\u7684\u5168\u5c40\u8b8a\u91cf\u5b57\u5178\u3002\u672c\u6587\u5c07\u4ecb\u7d39globals()\u51fd\u6578\u7684\u7528\u6cd5\uff0c\u4ee5\u53ca\u5b83\u5982\u4f55\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u5168\u5c40\u8b8a\u91cf\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-3004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-Ms","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=3004"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3004\/revisions"}],"predecessor-version":[{"id":3005,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3004\/revisions\/3005"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=3004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}