{"id":2609,"date":"2025-06-01T17:27:38","date_gmt":"2025-06-04T10:00:37","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=2609"},"modified":"2025-06-04T17:27:38","modified_gmt":"2025-06-04T10:00:37","slug":"python-list-index-syntax","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/python-list-index-syntax\/","title":{"rendered":"\u638c\u63e1 Python \u4e32\u5217(List) \u7684 index() \u65b9\u6cd5\uff1a2025 \u6700\u65b0\u6559\u5b78\u8207\u5be6\u4f5c\u7bc4\u4f8b"},"content":{"rendered":"

\u5229\u7528 Python \u4e32\u5217(List) index() \u65b9\u6cd5\uff0c\u8f15\u9b06\u638c\u63e1 Python \u7a0b\u5f0f\u8a2d\u8a08<\/h2>\n

Python \u662f\u4e00\u7a2e\u975e\u5e38\u6d41\u884c\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7db2\u7ad9\u3001\u684c\u9762\u61c9\u7528\u7a0b\u5f0f\u548c\u79fb\u52d5\u61c9\u7528\u7a0b\u5f0f\u7684\u958b\u767c\u3002\u7531\u65bc\u5176\u7c21\u55ae\u6613\u5b78\u7684\u8a9e\u6cd5\uff0c\u521d\u5b78\u8005\u80fd\u5feb\u901f\u4e0a\u624b\u3002\u6b64\u5916\uff0cPython \u4e5f\u63d0\u4f9b\u4e86\u8a31\u591a\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u5275\u9020\u51fa\u529f\u80fd\u5f37\u5927\u7684\u61c9\u7528\u7a0b\u5f0f\u3002<\/p>\n

\u5728 Python \u4e2d\uff0c\u4e32\u5217(List) \u662f\u4e00\u7a2e\u5e38\u898b\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u80fd\u5132\u5b58\u4e00\u7cfb\u5217\u7684\u8cc7\u6599\uff0c\u5982\u5b57\u4e32\u3001\u6578\u5b57\u3001\u7269\u4ef6\u7b49\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 `index()` \u65b9\u6cd5\u4f86\u641c\u5c0b\u4e32\u5217\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\u4e26\u7372\u53d6\u5176\u7d22\u5f15\u503c\u3002<\/p>\n

\u4f7f\u7528 index() \u65b9\u6cd5\u641c\u5c0b\u4e32\u5217\u5143\u7d20<\/h3>\n

`index()` \u65b9\u6cd5\u7528\u65bc\u8fd4\u56de\u6307\u5b9a\u503c\u5728\u4e32\u5217\u4e2d\u7684\u7b2c\u4e00\u500b\u7d22\u5f15\u3002\u5982\u679c\u8a72\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u5f15\u767c `ValueError`\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 `index()` \u65b9\u6cd5\u641c\u5c0b\u4e32\u5217\u4e2d\u7279\u5b9a\u5143\u7d20\u7684\u7bc4\u4f8b\uff1a<\/p>\n

“`python
\n# \u5b9a\u7fa9\u4e00\u500b\u4e32\u5217
\nmy_list = [“apple”, “banana”, “cherry”]\n

# \u4f7f\u7528 index() \u65b9\u6cd5\u641c\u5c0b\u4e32\u5217\u4e2d\u7684\u7279\u5b9a\u5143\u7d20
\ntry:
\n x = my_list.index(“banana”)
\n print(f”\u5143\u7d20 ‘banana’ \u7684\u7d22\u5f15\u503c\u662f: {x}”)
\nexcept ValueError:
\n print(“\u5143\u7d20 ‘banana’ \u4e0d\u5728\u4e32\u5217\u4e2d”)
\n“`<\/p>\n

\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba `my_list` \u7684\u4e32\u5217\uff0c\u4e26\u4f7f\u7528 `index()` \u65b9\u6cd5\u641c\u5c0b\u4e32\u5217\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\uff0c\u6700\u5f8c\u53d6\u5f97\u5176\u7d22\u5f15\u503c\u4e26\u986f\u793a\u51fa\u4f86\u3002\u82e5\u8a72\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u6211\u5011\u4f7f\u7528 `try-except` \u932f\u8aa4\u8655\u7406\u4f86\u907f\u514d\u7a0b\u5f0f\u5d29\u6f70\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h3>\n

1. **\u6aa2\u67e5\u5143\u7d20\u662f\u5426\u5b58\u5728**\uff1a\u5728\u4f7f\u7528 `index()` \u65b9\u6cd5\u524d\uff0c\u6700\u597d\u5148\u6aa2\u67e5\u5143\u7d20\u662f\u5426\u5b58\u5728\u65bc\u4e32\u5217\u4e2d\uff0c\u4ee5\u907f\u514d\u5f15\u767c\u932f\u8aa4\u3002
\n2. **\u4f7f\u7528 `in` \u9032\u884c\u6aa2\u67e5**\uff1a
\n “`python
\n if “banana” in my_list:
\n x = my_list.index(“banana”)
\n else:
\n print(“\u5143\u7d20 ‘banana’ \u4e0d\u5728\u4e32\u5217\u4e2d”)
\n “`<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h3>\n

\u9664\u4e86 `index()` \u65b9\u6cd5\uff0cPython \u9084\u63d0\u4f9b\u5176\u4ed6\u8207\u4e32\u5217\u64cd\u4f5c\u76f8\u95dc\u7684\u529f\u80fd\uff0c\u5982 `append()`\u3001`remove()` \u548c `sort()` \u7b49\u3002\u9019\u4e9b\u65b9\u6cd5\u7d50\u5408\u4f7f\u7528\u53ef\u4ee5\u5efa\u7acb\u66f4\u8907\u96dc\u7684\u8cc7\u6599\u8655\u7406\u908f\u8f2f\u3002<\/p>\n

\u4f8b\u5982\uff0c\u82e5\u8981\u627e\u5230\u4e32\u5217\u4e2d\u6240\u6709\u7279\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n

“`python
\n# \u5b9a\u7fa9\u4e00\u500b\u4e32\u5217\u53ca\u4e00\u500b\u5143\u7d20
\nmy_list = [“apple”, “banana”, “cherry”, “banana”]\nelement = “banana”<\/p>\n

# \u5c0b\u627e\u6240\u6709 ‘banana’ \u7684\u7d22\u5f15
\nindices = [i for i, x in enumerate(my_list) if x == element]\nprint(f”\u5143\u7d20 ‘{element}’ \u7684\u6240\u6709\u7d22\u5f15\u503c\u662f: {indices}”)
\n“`<\/p>\n

\u9019\u6bb5\u4ee3\u78bc\u4f7f\u7528 `enumerate()` \u51fd\u6578\u4f86\u7372\u53d6\u6240\u6709\u7b26\u5408\u7684\u7d22\u5f15\uff0c\u9019\u5728\u8655\u7406\u91cd\u8907\u5143\u7d20\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n

\u7e3d\u4e4b\uff0c`index()` \u65b9\u6cd5\u662f Python \u4e32\u5217\u64cd\u4f5c\u4e2d\u7684\u4e00\u500b\u57fa\u672c\u4f46\u5f37\u5927\u7684\u5de5\u5177\uff0c\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u7406\u89e3\u5982\u4f55\u6709\u6548\u4f7f\u7528\u5b83\u5c07\u5927\u5927\u63d0\u9ad8\u7a0b\u5f0f\u8a2d\u8a08\u7684\u6548\u7387\u3002<\/p>\n

\u5982\u679c\u60f3\u4e86\u89e3\u66f4\u591a Python \u7684\u8cc7\u6599\u7d50\u69cb\u548c\u65b9\u6cd5\uff0c\u6b61\u8fce\u53c3\u8003 [\u9019\u7bc7\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc\/article\/5f6e0d2e4f2c2e001c4d3e60)\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h3>\n

**Q1: \u4f7f\u7528 `index()` \u65b9\u6cd5\u6642\uff0c\u5982\u4f55\u8655\u7406\u5143\u7d20\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\uff1f**
\nA: \u60a8\u53ef\u4ee5\u4f7f\u7528 `try-except` \u7d50\u69cb\u4f86\u6355\u6349 `ValueError`\uff0c\u6216\u8005\u5728\u67e5\u8a62\u524d\u4f7f\u7528 `in` \u95dc\u9375\u5b57\u6aa2\u67e5\u5143\u7d20\u662f\u5426\u5b58\u5728\u3002<\/p>\n

**Q2: `index()` \u65b9\u6cd5\u53ef\u4ee5\u7528\u65bc\u591a\u7dad\u4e32\u5217\u55ce\uff1f**
\nA: `index()` \u65b9\u6cd5\u4e0d\u76f4\u63a5\u652f\u63f4\u591a\u7dad\u4e32\u5217\u3002\u5982\u679c\u9700\u8981\u67e5\u627e\u591a\u7dad\u4e32\u5217\u4e2d\u7684\u5143\u7d20\uff0c\u9700\u81ea\u884c\u5be6\u4f5c\u904d\u6b77\u908f\u8f2f\u3002<\/p>\n

**Q3: \u5982\u4f55\u627e\u5230\u4e32\u5217\u4e2d\u6240\u6709\u91cd\u8907\u5143\u7d20\u7684\u7d22\u5f15\uff1f**
\nA: \u53ef\u4ee5\u4f7f\u7528 `enumerate()` \u51fd\u6578\u8207\u5217\u8868\u63a8\u5c0e\u5f0f\u4f86\u7372\u53d6\u6240\u6709\u91cd\u8907\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u8a73\u898b\u4e0a\u6587\u7684\u5ef6\u4f38\u61c9\u7528\u7bc4\u4f8b\u3002
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5229\u7528 Python \u4e32\u5217(List) index(…<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"open","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":[],"class_list":["post-2609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-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-G5","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2609","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=2609"}],"version-history":[{"count":3,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2609\/revisions"}],"predecessor-version":[{"id":13052,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2609\/revisions\/13052"}],"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=2609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}