{"id":3428,"date":"2025-06-03T15:45:52","date_gmt":"2025-06-04T07:48:52","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3428"},"modified":"2025-06-04T15:45:52","modified_gmt":"2025-06-04T07:48:52","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84enter%e5%87%bd%e6%95%b8-2","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84enter%e5%87%bd%e6%95%b8-2\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Python \u7684 `enter()` \u51fd\u5f0f\uff1a\u6700\u4f73\u5be6\u8e10\u8207\u61c9\u7528\u7bc4\u4f8b\uff082025 \u6700\u65b0\u7248\uff09"},"content":{"rendered":"

<\/p>\n

\u5728 Python \u7a0b\u5f0f\u8a2d\u8a08\u4e2d\uff0c`enter()` \u51fd\u5f0f\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u96d6\u7136\u5728 Python \u7684\u6a19\u6e96\u5eab\u4e2d\u4e26\u4e0d\u5b58\u5728\u9019\u500b\u51fd\u5f0f\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u901a\u904e\u81ea\u5b9a\u7fa9\u51fd\u5f0f\u4f86\u5be6\u73fe\u985e\u4f3c\u7684\u529f\u80fd\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u70ba\u60a8\u4ecb\u7d39\u5982\u4f55\u5728 Python \u4e2d\u5275\u5efa\u548c\u4f7f\u7528 `enter()` \u51fd\u5f0f\uff0c\u4e26\u63d0\u4f9b\u6700\u4f73\u5be6\u8e10\u548c\u5be6\u4f5c\u7bc4\u4f8b\uff0c\u4ee5\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u3002<\/p>\n

\u81ea\u5b9a\u7fa9 `enter()` \u51fd\u5f0f\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5b9a\u7fa9\u4e00\u500b `enter()` \u51fd\u5f0f\uff0c\u5b83\u63a5\u53d7\u4e00\u500b\u51fd\u5f0f\u548c\u5176\u53c3\u6578\u4e26\u57f7\u884c\u5b83\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5be6\u4f5c\u7bc4\u4f8b\uff1a<\/p>\n

“`python
\ndef enter(func, *args, **kwargs):
\n return func(*args, **kwargs)
\n“`<\/p>\n

\u9019\u6a23\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528 `enter()` \u51fd\u5f0f\u4f86\u57f7\u884c\u4efb\u4f55\u50b3\u5165\u7684\u51fd\u5f0f\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u51fd\u5f0f\u53eb\u505a `print_hello`\uff0c\u5b83\u6703\u5370\u51fa “Hello World”\uff1a<\/p>\n

“`python
\ndef print_hello():
\n print(“Hello World”)
\n“`<\/p>\n

\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u8abf\u7528\uff1a<\/p>\n

“`python
\nenter(print_hello)
\n“`<\/p>\n

\u9019\u6a23\uff0c\u60a8\u5c31\u53ef\u4ee5\u5728\u7a0b\u5f0f\u4e2d\u57f7\u884c `print_hello` \u51fd\u5f0f\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u555f\u52d5\u6574\u500b\u7a0b\u5f0f\u3002<\/p>\n

\u50b3\u905e\u53c3\u6578\u5230 `enter()` \u51fd\u5f0f<\/h2>\n

`enter()` \u51fd\u5f0f\u7684\u9748\u6d3b\u6027\u5728\u65bc\u5b83\u53ef\u4ee5\u63a5\u6536\u53c3\u6578\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u50b3\u905e\u53c3\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n

“`python
\ndef print_name(name):
\n print(“Hello, ” + name)<\/p>\n

enter(print_name, “John”)
\n“`<\/p>\n

\u9019\u6a23\uff0c\u60a8\u5728\u7a0b\u5f0f\u4e2d\u57f7\u884c `print_name` \u51fd\u5f0f\u4e26\u50b3\u5165\u53c3\u6578 “John”\u3002<\/p>\n

\u4f7f\u7528\u591a\u500b\u53c3\u6578\u7684\u7bc4\u4f8b<\/h2>\n

\u60a8\u751a\u81f3\u53ef\u4ee5\u4f7f\u7528 `enter()` \u51fd\u5f0f\u4f86\u57f7\u884c\u9700\u8981\u591a\u500b\u53c3\u6578\u7684\u51fd\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f8b\u5b50\uff1a<\/p>\n

“`python
\ndef print_name_and_age(name, age):
\n print(“Hello, ” + name + “. You are ” + str(age) + ” years old.”)<\/p>\n

enter(print_name_and_age, “John”, 30)
\n“`<\/p>\n

\u9019\u6a23\uff0c\u60a8\u53ef\u4ee5\u540c\u6642\u50b3\u5165\u591a\u500b\u53c3\u6578\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u8907\u57f7\u884c\u6574\u500b\u7a0b\u5f0f\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u5e38\u898b\u554f\u984c<\/h2>\n

\u5728\u4f7f\u7528 `enter()` \u51fd\u5f0f\u6642\uff0c\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\u3002\u4ee5\u4e0b\u63d0\u4f9b\u4e00\u4e9b\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n

1. **TypeError: ‘NoneType’ object is not callable**
\n – \u78ba\u4fdd\u60a8\u50b3\u5165\u7684\u51fd\u5f0f\u5df2\u6b63\u78ba\u5b9a\u7fa9\u4e26\u4e0d\u70ba `None`\u3002<\/p>\n

2. **Missing arguments**
\n – \u7576\u51fd\u5f0f\u9700\u8981\u53c3\u6578\u6642\uff0c\u78ba\u4fdd\u60a8\u5728\u8abf\u7528 `enter()` \u6642\u63d0\u4f9b\u4e86\u5fc5\u8981\u7684\u6240\u6709\u53c3\u6578\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

`enter()` \u51fd\u5f0f\u7684\u6982\u5ff5\u53ef\u4ee5\u64f4\u5c55\u5230\u8a31\u591a\u4e0d\u540c\u7684\u5834\u666f\uff0c\u4f8b\u5982\u5728\u7570\u6b65\u7de8\u7a0b\u4e2d\u57f7\u884c\u56de\u8abf\u51fd\u5f0f\uff0c\u6216\u5728\u88dd\u98fe\u5668\u4e2d\u57f7\u884c\u51fd\u5f0f\u3002\u9019\u8b93\u60a8\u7684\u7a0b\u5f0f\u78bc\u66f4\u52a0\u9748\u6d3b\uff0c\u4e26\u4e14\u66f4\u5bb9\u6613\u7dad\u8b77\u3002<\/p>\n

\u7d50\u8ad6<\/h2>\n

\u81ea\u5b9a\u7fa9\u7684 `enter()` \u51fd\u5f0f\u53ef\u4ee5\u8b93\u60a8\u5728 Python \u7a0b\u5f0f\u4e2d\u9748\u6d3b\u5730\u57f7\u884c\u7279\u5b9a\u7684\u52d5\u4f5c\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u555f\u52d5\u6574\u500b\u7a0b\u5f0f\u3002\u900f\u904e\u50b3\u905e\u53c3\u6578\uff0c\u60a8\u53ef\u4ee5\u4f7f\u51fd\u5f0f\u66f4\u5177\u901a\u7528\u6027\uff0c\u6e1b\u5c11\u91cd\u8907\u7684\u5de5\u4f5c\u3002\u9019\u662f\u63d0\u9ad8\u7a0b\u5f0f\u78bc\u53ef\u8b80\u6027\u8207\u7dad\u8b77\u6027\u7684\u597d\u65b9\u6cd5\u3002<\/p>\n

\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3 Python \u7684\u5176\u4ed6\u529f\u80fd\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003 [\u9019\u7bc7\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc\/article\/60a8c3d7fd89780001f37b3e) \u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

**Q1: `enter()` \u51fd\u5f0f\u53ef\u4ee5\u7528\u65bc\u7570\u6b65\u7de8\u7a0b\u55ce\uff1f**
\nA: \u662f\u7684\uff0c\u60a8\u53ef\u4ee5\u5c07 `enter()` \u51fd\u5f0f\u8207\u7570\u6b65\u51fd\u5f0f\u7d50\u5408\u4f7f\u7528\uff0c\u53ea\u9700\u78ba\u4fdd\u5728\u8abf\u7528\u6642\u4f7f\u7528 `await`\u3002<\/p>\n

**Q2: \u5982\u679c\u6211\u4e0d\u60f3\u4f7f\u7528 `*args` \u548c `**kwargs`\uff0c\u9084\u80fd\u50b3\u905e\u53c3\u6578\u55ce\uff1f**
\nA: \u7576\u7136\u53ef\u4ee5\uff0c\u60a8\u53ef\u4ee5\u76f4\u63a5\u5728 `enter()` \u51fd\u5f0f\u4e2d\u5b9a\u7fa9\u7279\u5b9a\u7684\u53c3\u6578\uff0c\u7136\u5f8c\u50b3\u905e\u7d66\u76f8\u61c9\u7684\u51fd\u5f0f\u3002<\/p>\n

**Q3: \u5982\u4f55\u5728 `enter()` \u51fd\u5f0f\u4e2d\u8655\u7406\u932f\u8aa4\uff1f**
\nA: \u60a8\u53ef\u4ee5\u5728 `enter()` \u51fd\u5f0f\u5167\u90e8\u4f7f\u7528 `try-except` \u584a\u4f86\u6355\u7372\u548c\u8655\u7406\u7570\u5e38\uff0c\u5f9e\u800c\u63d0\u9ad8\u7a0b\u5f0f\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

enter()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u5c07\u7269\u4ef6\u3001\u5217\u8868\u3001\u5b57\u5178\u7b49\u5c01\u88dd\u70ba\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\uff0c\u4ee5\u4fbf\u5728with\u8a9e\u53e5\u4e2d\u4f7f\u7528\u3002\u672c\u6587\u5c07\u4ecb\u7d39enter()\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5b83\u7684\u512a\u9ede\u548c\u7f3a\u9ede\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-3428","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-Ti","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3428","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=3428"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3428\/revisions"}],"predecessor-version":[{"id":3429,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3428\/revisions\/3429"}],"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=3428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}