{"id":2749,"date":"2025-05-31T17:19:05","date_gmt":"2025-06-04T09:47:04","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=2749"},"modified":"2025-06-04T17:19:05","modified_gmt":"2025-06-04T09:47:04","slug":"%e7%b0%a1%e5%96%ae%e6%98%93%e6%87%82%ef%bc%81%e5%ad%b8%e7%bf%92python%ef%bc%9a%e4%bd%bf%e7%94%a8listcomprehension%e4%be%86%e7%b0%a1%e5%8c%96%e7%a8%8b%e5%bc%8f%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e7%b0%a1%e5%96%ae%e6%98%93%e6%87%82%ef%bc%81%e5%ad%b8%e7%bf%92python%ef%bc%9a%e4%bd%bf%e7%94%a8listcomprehension%e4%be%86%e7%b0%a1%e5%8c%96%e7%a8%8b%e5%bc%8f%e7%a2%bc\/","title":{"rendered":"2025 \u6700\u65b0 Python \u6559\u5b78\uff1a\u4f7f\u7528 List Comprehension \u7c21\u5316\u7a0b\u5f0f\u78bc\u7684\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"

<\/p>\n

2025 \u6700\u65b0 Python \u6559\u5b78\uff1a\u4f7f\u7528 List Comprehension \u7c21\u5316\u7a0b\u5f0f\u78bc\u7684\u6700\u4f73\u5be6\u8e10<\/h1>\n

\u57282025\u5e74\uff0cPython \u4ecd\u7136\u662f\u5168\u7403\u6700\u53d7\u6b61\u8fce\u7684\u7a0b\u5f0f\u8a9e\u8a00\u4e4b\u4e00\uff0c\u4ee5\u5176\u7c21\u6f54\u7684\u8a9e\u6cd5\u548c\u5f37\u5927\u7684\u529f\u80fd\u5438\u5f15\u4e86\u7121\u6578\u958b\u767c\u8005\u3002\u672c\u6587\u5c07\u4ecb\u7d39 Python \u4e2d\u7684\u4e00\u500b\u5f37\u5927\u7279\u6027\u2014\u2014**List Comprehension**\uff0c\u9019\u9805\u6280\u8853\u4e0d\u50c5\u80fd\u5920\u7c21\u5316\u7a0b\u5f0f\u78bc\uff0c\u9084\u80fd\u63d0\u5347\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u8207\u6548\u7387\u3002<\/p>\n

## \u4ec0\u9ebc\u662f List Comprehension\uff1f<\/p>\n

List Comprehension \u662f\u4e00\u7a2e\u7c21\u6f54\u800c\u6709\u6548\u7684\u8a9e\u6cd5\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u4e00\u884c\u7a0b\u5f0f\u78bc\u5167\u5b8c\u6210\u8907\u96dc\u7684\u4efb\u52d9\u3002\u57fa\u672c\u8a9e\u6cd5\u70ba\uff1a<\/p>\n

“`python
\n[expression for item in iterable]\n“`<\/p>\n

\u9019\u7a2e\u8a9e\u6cd5\u53ef\u4ee5\u5c0d\u5217\u8868\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c\u64cd\u4f5c\uff0c\u4e26\u751f\u6210\u4e00\u500b\u65b0\u7684\u5217\u8868\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5217\u8868\uff0c\u5305\u542b\u4e00\u4e9b\u6578\u5b57\uff1a<\/p>\n

“`python
\nnumbers = [1, 2, 3, 4, 5]\n“`<\/p>\n

\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 List Comprehension \u5c07\u6bcf\u500b\u6578\u5b57\u52a0\u4e0a 2\uff1a<\/p>\n

“`python
\nnew_numbers = [n + 2 for n in numbers]\n“`<\/p>\n

\u6b64\u6642\uff0c`new_numbers` \u5217\u8868\u5c07\u5305\u542b\u6bcf\u500b\u6578\u5b57\u52a0\u4e0a 2 \u7684\u7d50\u679c\uff1a<\/p>\n

“`python
\n[3, 4, 5, 6, 7]\n“`<\/p>\n

## \u4f7f\u7528\u689d\u4ef6\u5f0f\u7684 List Comprehension<\/p>\n

List Comprehension \u4e5f\u652f\u6301\u689d\u4ef6\u5f0f\uff0c\u9019\u610f\u5473\u8457\u6211\u5011\u53ef\u4ee5\u5728\u751f\u6210\u65b0\u5217\u8868\u7684\u540c\u6642\u904e\u6ffe\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u5217\u8868\u4e2d\u7684\u5076\u6578\u63d0\u53d6\u5230\u65b0\u7684\u5217\u8868\u4e2d\uff1a<\/p>\n

“`python
\neven_numbers = [n for n in numbers if n % 2 == 0]\n“`<\/p>\n

\u57f7\u884c\u5f8c\uff0c`even_numbers` \u5217\u8868\u5c07\u53ea\u5305\u542b\u5076\u6578\uff1a<\/p>\n

“`python
\n[2, 4]\n“`<\/p>\n

## \u5be6\u4f5c\u7bc4\u4f8b\uff1aList Comprehension \u7684\u61c9\u7528<\/p>\n

\u8b93\u6211\u5011\u4f86\u770b\u4e00\u500b\u66f4\u5be6\u969b\u7684\u7bc4\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5f9e\u4e00\u500b\u5305\u542b\u5b78\u751f\u5206\u6578\u7684\u5217\u8868\u4e2d\uff0c\u63d0\u53d6\u51fa\u6240\u6709\u53ca\u683c\u7684\u5206\u6578\uff08\u5047\u8a2d\u53ca\u683c\u5206\u6578\u70ba 60\uff09\uff1a<\/p>\n

“`python
\nscores = [55, 67, 42, 90, 85, 33, 76]\npassing_scores = [score for score in scores if score >= 60]\n“`<\/p>\n

\u6b64\u6642\uff0c`passing_scores` \u5c07\u5305\u542b\uff1a<\/p>\n

“`python
\n[67, 90, 85, 76]\n“`<\/p>\n

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

\u5728\u4f7f\u7528 List Comprehension \u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u554f\u984c\uff1a<\/p>\n

1. **\u5217\u8868\u904e\u5927**\uff1a\u5982\u679c\u539f\u59cb\u5217\u8868\u975e\u5e38\u5927\uff0c\u4f7f\u7528 List Comprehension \u53ef\u80fd\u6703\u5c0e\u81f4\u5167\u5b58\u554f\u984c\u3002\u9019\u6642\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u751f\u6210\u5668\u8868\u9054\u5f0f\u3002<\/p>\n

2. **\u8907\u96dc\u908f\u8f2f**\uff1a\u5982\u679c\u5217\u8868\u751f\u6210\u908f\u8f2f\u904e\u65bc\u8907\u96dc\uff0c\u5efa\u8b70\u4f7f\u7528\u5e38\u898f\u7684 for \u8ff4\u5708\u4ee5\u63d0\u5347\u53ef\u8b80\u6027\u3002<\/p>\n

## \u5ef6\u4f38\u61c9\u7528<\/p>\n

List Comprehension \u4e0d\u50c5\u9650\u65bc\u751f\u6210\u5217\u8868\uff0c\u9084\u53ef\u4ee5\u8207\u5176\u4ed6\u6578\u64da\u7d50\u69cb\u642d\u914d\u4f7f\u7528\uff0c\u6bd4\u5982\u5b57\u5178\u548c\u96c6\u5408\uff1a<\/p>\n

“`python
\n# \u4f7f\u7528\u5b57\u5178\u63a8\u5c0e\u5f0f
\nsquared_dict = {n: n**2 for n in numbers}
\n“`<\/p>\n

\u9019\u5c07\u751f\u6210\u4e00\u500b\u5b57\u5178\uff0c\u5176\u4e2d\u5305\u542b\u6578\u5b57\u53ca\u5176\u5e73\u65b9\u503c\u3002<\/p>\n

## \u7e3d\u7d50<\/p>\n

\u638c\u63e1 List Comprehension \u5c0d\u65bc\u63d0\u5347 Python \u7de8\u7a0b\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u900f\u904e\u7c21\u6f54\u7684\u8a9e\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u4e00\u884c\u5167\u5b8c\u6210\u8907\u96dc\u7684\u64cd\u4f5c\uff0c\u8b93\u7a0b\u5f0f\u78bc\u66f4\u52a0\u6e05\u6670\u6613\u8b80\u3002<\/p>\n

\u82e5\u60f3\u9032\u4e00\u6b65\u63d0\u5347 Python \u6280\u80fd\uff0c\u8acb\u53c3\u8003\u6211\u5011\u7684 [Python \u9ad8\u7d1a\u6280\u5de7](https:\/\/vocus.cc) \u6216 [Python \u61c9\u7528\u5be6\u4f8b](https:\/\/miner.tw)\u3002<\/p>\n

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

**Q1: List Comprehension \u771f\u7684\u80fd\u63d0\u5347\u7a0b\u5e8f\u6027\u80fd\u55ce\uff1f**
\nA1: \u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0cList Comprehension \u7684\u6027\u80fd\u512a\u65bc\u50b3\u7d71\u7684 for \u8ff4\u5708\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u6e1b\u5c11\u51fd\u5f0f\u8abf\u7528\u7684\u6b21\u6578\uff0c\u4e26\u5728\u5167\u90e8\u9032\u884c\u512a\u5316\u3002<\/p>\n

**Q2: \u4f7f\u7528 List Comprehension \u662f\u5426\u6703\u5f71\u97ff\u7a0b\u5f0f\u78bc\u7684\u53ef\u8b80\u6027\uff1f**
\nA2: \u5c0d\u65bc\u7c21\u55ae\u7684\u64cd\u4f5c\uff0cList Comprehension \u53ef\u4ee5\u63d0\u9ad8\u53ef\u8b80\u6027\uff0c\u4f46\u5982\u679c\u908f\u8f2f\u904e\u65bc\u8907\u96dc\uff0c\u5247\u5efa\u8b70\u4f7f\u7528\u5e38\u898f\u7684 for \u8ff4\u5708\u3002<\/p>\n

**Q3: \u6211\u53ef\u4ee5\u5728 List Comprehension \u4e2d\u4f7f\u7528\u591a\u500b\u689d\u4ef6\u55ce\uff1f**
\nA3: \u53ef\u4ee5\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u591a\u500b if \u689d\u4ef6\u4f86\u9032\u884c\u9032\u4e00\u6b65\u7684\u904e\u6ffe\uff0c\u4f8b\u5982\uff1a<\/p>\n

“`python
\nfiltered_numbers = [n for n in numbers if n > 2 and n < 5]\n```\n\n\u9019\u6a23 `filtered_numbers` \u5c07\u53ea\u5305\u542b\u7b26\u5408\u689d\u4ef6\u7684\u6578\u5b57\u3002\n\n---\n<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6458\u8981\uff1aListComprehension\u662fPython\u4e2d\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8b93\u4f60\u66f4\u5feb\u901f\u5730\u5beb\u51fa\u7a0b\u5f0f\u78bc\uff0c\u66f4\u5bb9\u6613\u5730\u7406\u89e3\u7a0b\u5f0f\u78bc\u7684\u610f\u7fa9\uff0c\u8b93\u4f60\u7684\u7a0b\u5f0f\u78bc\u66f4\u7c21\u6f54\u3001\u66f4\u6613\u8b80\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-2749","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-Il","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2749","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=2749"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2749\/revisions"}],"predecessor-version":[{"id":2750,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2749\/revisions\/2750"}],"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=2749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}