{"id":3036,"date":"2025-05-29T16:43:59","date_gmt":"2025-06-04T09:05:59","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3036"},"modified":"2025-06-04T16:43:59","modified_gmt":"2025-06-04T09:05:59","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84delitem%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%84delitem%e5%87%bd%e6%95%b8\/","title":{"rendered":"\u5fb9\u5e95\u4e86\u89e3 Python \u7684 delitem() \u51fd\u6578\uff1a2025 \u6700\u65b0\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"

<\/p>\n

\u5fb9\u5e95\u4e86\u89e3 Python \u7684 delitem() \u51fd\u6578<\/h1>\n

\u5728 Python \u4e2d\uff0c`delitem()` \u662f\u4e00\u500b\u7528\u4f86\u522a\u9664\u5b57\u5178\u4e2d\u7279\u5b9a\u9375\u503c\u5c0d\u7684\u65b9\u6cd5\u3002\u7136\u800c\uff0c\u9019\u500b\u65b9\u6cd5\u5728 Python \u7684\u6700\u65b0\u7248\u672c\u4e2d\u4e26\u4e0d\u5e38\u7528\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u4f7f\u7528 `__delitem__` \u6216\u76f4\u63a5\u4f7f\u7528 `del` \u95dc\u9375\u5b57\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e9b\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u7bc4\u4f8b\u8207\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n

delitem() \u51fd\u5f0f\u7684\u8a9e\u6cd5<\/h2>\n

\u96d6\u7136 `delitem()` \u53ef\u4ee5\u7528\u65bc\u522a\u9664\u5b57\u5178\u7684\u9375\u503c\u5c0d\uff0c\u4f46\u6700\u4f73\u505a\u6cd5\u662f\u4f7f\u7528 `del` \u95dc\u9375\u5b57\uff1a<\/p>\n

“`python
\ndel dict[key]\n“`<\/p>\n

\u9019\u88e1\u7684 `key` \u662f\u8981\u522a\u9664\u7684\u9375\u3002<\/p>\n

\u4f7f\u7528 __delitem__ \u65b9\u6cd5<\/h2>\n

\u82e5\u60a8\u5e0c\u671b\u4f7f\u7528\u985e\u4f3c\u65bc `delitem()` \u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528 `__delitem__`\u3002\u9019\u662f\u4e00\u500b\u7279\u6b8a\u65b9\u6cd5\uff0c\u7528\u65bc\u5be6\u73fe\u5b57\u5178\u7684\u522a\u9664\u64cd\u4f5c\uff1a<\/p>\n

“`python
\ndict.__delitem__(key)
\n“`<\/p>\n

del \u548c __delitem__ \u7684\u7bc4\u4f8b<\/h2>\n

\u4ee5\u4e0b\u7bc4\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 `del` \u548c `__delitem__` \u65b9\u6cd5\u4f86\u522a\u9664\u5b57\u5178\u4e2d\u7684\u9375\u503c\u5c0d\uff1a<\/p>\n

“`python
\n# \u5efa\u7acb\u4e00\u500b\u5b57\u5178
\nmy_dict = {
\n “name”: “John”,
\n “age”: 36,
\n “city”: “New York”
\n}<\/p>\n

# \u4f7f\u7528 del \u522a\u9664\u9375\u503c\u5c0d
\ndel my_dict[“age”]\n

# \u986f\u793a\u5b57\u5178
\nprint(my_dict) # \u8f38\u51fa: {‘name’: ‘John’, ‘city’: ‘New York’}<\/p>\n

# \u91cd\u65b0\u5efa\u7acb\u5b57\u5178
\nmy_dict = {
\n “name”: “John”,
\n “age”: 36,
\n “city”: “New York”
\n}<\/p>\n

# \u4f7f\u7528 __delitem__ \u522a\u9664\u9375\u503c\u5c0d
\nmy_dict.__delitem__(“city”)<\/p>\n

# \u986f\u793a\u5b57\u5178
\nprint(my_dict) # \u8f38\u51fa: {‘name’: ‘John’, ‘age’: 36}
\n“`<\/p>\n

\u5728\u9019\u5169\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\uff0c\u4f7f\u7528 `del` \u548c `__delitem__` \u90fd\u80fd\u6210\u529f\u522a\u9664\u5b57\u5178\u4e2d\u7684\u9375\u503c\u5c0d\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664<\/h2>\n

\u5728\u4f7f\u7528\u9019\u4e9b\u65b9\u6cd5\u6642\uff0c\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u932f\u8aa4\uff1a<\/p>\n

1. **KeyError**\uff1a\u7576\u60a8\u5617\u8a66\u522a\u9664\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u9375\u6642\uff0c\u5c07\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u8acb\u78ba\u4fdd\u9375\u5b58\u5728\u65bc\u5b57\u5178\u4e2d\u3002
\n2. **TypeError**\uff1a\u7576\u60a8\u4f7f\u7528\u4e0d\u6b63\u78ba\u7684\u8cc7\u6599\u985e\u578b\u4f5c\u70ba\u9375\u6642\uff0c\u5c07\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u5b57\u5178\u7684\u9375\u9700\u70ba\u53ef\u54c8\u5e0c\u985e\u578b\uff0c\u5982\u5b57\u4e32\u6216\u6578\u5b57\u3002<\/p>\n

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

– **\u52d5\u614b\u522a\u9664\u9375\u503c\u5c0d**\uff1a\u5728\u8655\u7406\u5927\u578b\u5b57\u5178\u548c\u6578\u64da\u6642\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u689d\u4ef6\u52d5\u614b\u522a\u9664\u9375\u503c\u5c0d\uff0c\u4ee5\u512a\u5316\u5167\u5b58\u4f7f\u7528\u548c\u6027\u80fd\u3002
\n– **\u5408\u4f75\u5b57\u5178**\uff1a\u5728\u5408\u4f75\u5b57\u5178\u6642\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u522a\u9664\u91cd\u8907\u7684\u9375\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u3002<\/p>\n

\u6709\u95dc\u66f4\u591a Python \u5b57\u5178\u64cd\u4f5c\u7684\u8a73\u7d30\u6559\u5b78\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003\u9019\u7bc7\u6587\u7ae0\uff1a[Python \u5b57\u5178\u64cd\u4f5c\u6307\u5357](https:\/\/vocus.cc\/article\/xxxx)\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

\u5728 Python \u4e2d\uff0c\u96d6\u7136 `delitem()` \u65b9\u6cd5\u53ef\u4ee5\u7528\u4f86\u522a\u9664\u5b57\u5178\u7684\u9375\u503c\u5c0d\uff0c\u4f46\u6700\u63a8\u85a6\u7684\u65b9\u5f0f\u662f\u4f7f\u7528 `del` \u6216 `__delitem__` \u65b9\u6cd5\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u7c21\u55ae\u6613\u7528\uff0c\u9084\u80fd\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u6548\u7387\u3002<\/p>\n

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

**Q1: delitem() \u548c del \u6709\u4ec0\u9ebc\u5340\u5225\uff1f**
\nA1: `delitem()` \u662f\u4e00\u500b\u4e0d\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u800c `del` \u662f\u522a\u9664\u5b57\u5178\u9375\u503c\u5c0d\u7684\u63a8\u85a6\u7528\u6cd5\uff0c\u56e0\u70ba\u5b83\u66f4\u7c21\u6f54\u4e14\u6613\u65bc\u7406\u89e3\u3002<\/p>\n

**Q2: \u5982\u4f55\u8655\u7406\u522a\u9664\u4e0d\u5b58\u5728\u7684\u9375\u6642\u7684\u932f\u8aa4\uff1f**
\nA2: \u4f7f\u7528 `if key in dict:` \u4f86\u6aa2\u67e5\u9375\u662f\u5426\u5b58\u5728\uff0c\u907f\u514d\u5f15\u767c `KeyError`\u3002<\/p>\n

**Q3: \u4ec0\u9ebc\u6642\u5019\u61c9\u8a72\u4f7f\u7528 __delitem__\uff1f**
\nA3: `__delitem__` \u65b9\u6cd5\u901a\u5e38\u5728\u81ea\u5b9a\u7fa9\u985e\u5225\u4e2d\u4f7f\u7528\uff0c\u4ee5\u5be6\u73fe\u81ea\u5b9a\u7fa9\u7684\u522a\u9664\u884c\u70ba\u3002\u5728\u5e38\u898f\u5b57\u5178\u64cd\u4f5c\u4e2d\uff0c\u4f7f\u7528 `del` \u66f4\u70ba\u5408\u9069\u3002
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"

delitem()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u522a\u9664\u5b57\u5178\u4e2d\u7684\u9805\u76ee\uff0c\u4ee5\u53ca\u522a\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39delitem()\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-3036","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-MY","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3036","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=3036"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3036\/revisions"}],"predecessor-version":[{"id":12953,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3036\/revisions\/12953"}],"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=3036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}