{"id":3438,"date":"2025-06-03T14:48:10","date_gmt":"2025-06-04T07:45:09","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3438"},"modified":"2025-06-04T14:48:10","modified_gmt":"2025-06-04T07:45:09","slug":"%e4%bd%bf%e7%94%a8python%e7%9a%84filter%e5%87%bd%e6%95%b8%e7%af%a9%e9%81%b8%e8%b3%87%e6%96%99","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%bd%bf%e7%94%a8python%e7%9a%84filter%e5%87%bd%e6%95%b8%e7%af%a9%e9%81%b8%e8%b3%87%e6%96%99\/","title":{"rendered":"\u7528 Python \u7684 filter() \u51fd\u6578\u9ad8\u6548\u7be9\u9078\u8cc7\u6599\uff1a2025 \u6700\u65b0\u6559\u5b78"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Python, filter(), Python \u6559\u5b78, \u8cc7\u6599\u7be9\u9078\"><\/p>\n<h1>\u7528 Python \u7684 filter() \u51fd\u6578\u9ad8\u6548\u7be9\u9078\u8cc7\u6599<\/h1>\n<p>Python \u7684 filter() \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u5730\u5f9e\u8cc7\u6599\u5e8f\u5217\u4e2d\u7be9\u9078\u51fa\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u5143\u7d20\uff0c\u800c\u7121\u9700\u7de8\u5beb\u7e41\u7463\u7684\u8ff4\u5708\u3002\u96a8\u8457 Python \u7684\u767c\u5c55\uff0c\u9019\u4e00\u529f\u80fd\u4e5f\u5f97\u5230\u4e86\u66f4\u65b0\u548c\u512a\u5316\uff0c\u5728 2025 \u5e74\u7684\u6700\u4f73\u5be6\u8e10\u4e2d\uff0c\u6211\u5011\u5c07\u66f4\u6df1\u5c64\u6b21\u5730\u63a2\u8a0e\u9019\u4e00\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n<h2>filter() \u51fd\u6578\u7684\u8a9e\u6cd5\u8207\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>filter() \u51fd\u6578\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`python<br \/>\nfilter(function, iterable)<br \/>\n&#8220;`<\/p>\n<p>&#8211; **function**\uff1a\u4e00\u500b\u51fd\u6578\uff0c\u63a5\u53d7\u4e00\u500b\u53c3\u6578\u4e26\u8fd4\u56de\u5e03\u6797\u503c\uff08True \u6216 False\uff09\u3002<br \/>\n&#8211; **iterable**\uff1a\u53ef\u8fed\u4ee3\u7684\u8cc7\u6599\u5e8f\u5217\uff0c\u4f8b\u5982 list\u3001tuple\u3001dict \u7b49\u3002<\/p>\n<p>filter() \u51fd\u6578\u6703\u5c07 iterable \u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u50b3\u5165 function \u4e2d\u3002\u5982\u679c function \u56de\u50b3 True\uff0c\u8a72\u5143\u7d20\u5c07\u88ab\u4fdd\u7559\uff1b\u5982\u679c\u56de\u50b3 False\uff0c\u5247\u8a72\u5143\u7d20\u6703\u88ab\u904e\u6ffe\u6389\u3002\u6700\u5f8c\uff0cfilter() \u51fd\u6578\u6703\u8fd4\u56de\u7531\u7b26\u5408\u689d\u4ef6\u7684\u5143\u7d20\u7d44\u6210\u7684\u8cc7\u6599\u5e8f\u5217\u3002<\/p>\n<h2>\u5be6\u4f5c\u7bc4\u4f8b\uff1a\u7be9\u9078\u5927\u65bc 10 \u7684\u6578\u5b57<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 filter() \u51fd\u6578\u7be9\u9078\u51fa\u8cc7\u6599\u5e8f\u5217\u4e2d\u5927\u65bc 10 \u7684\u5143\u7d20\u7684\u7bc4\u4f8b\uff1a<\/p>\n<p>&#8220;`python<br \/>\nnumbers = [2, 5, 8, 10, 15, 20]\n<p>def is_greater_than_10(x):<br \/>\n    return x > 10<\/p>\n<p>filtered_numbers = filter(is_greater_than_10, numbers)<\/p>\n<p>print(list(filtered_numbers))<br \/>\n&#8220;`<\/p>\n<p>\u57f7\u884c\u7d50\u679c\uff1a<\/p>\n<p>&#8220;`python<br \/>\n[15, 20]\n&#8220;`<\/p>\n<p>\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0cfilter() \u51fd\u6578\u6210\u529f\u5730\u4fdd\u7559\u4e86\u5927\u65bc 10 \u7684\u5143\u7d20\uff0c\u800c\u5176\u4ed6\u7684\u5143\u7d20\u5247\u88ab\u904e\u6ffe\u6389\u3002<\/p>\n<h2>\u5be6\u4f5c\u7bc4\u4f8b\uff1a\u7be9\u9078\u5076\u6578<\/h2>\n<p>\u540c\u6a23\uff0c\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528 filter() \u51fd\u6578\u4f86\u7be9\u9078\u51fa\u8cc7\u6599\u5e8f\u5217\u4e2d\u662f\u5076\u6578\u7684\u5143\u7d20\uff1a<\/p>\n<p>&#8220;`python<br \/>\nnumbers = [2, 5, 8, 10, 15, 20]\n<p>def is_even(x):<br \/>\n    return x % 2 == 0<\/p>\n<p>filtered_numbers = filter(is_even, numbers)<\/p>\n<p>print(list(filtered_numbers))<br \/>\n&#8220;`<\/p>\n<p>\u57f7\u884c\u7d50\u679c\uff1a<\/p>\n<p>&#8220;`python<br \/>\n[2, 8, 10, 20]\n&#8220;`<\/p>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0cfilter() \u51fd\u6578\u6210\u529f\u5730\u4fdd\u7559\u4e86\u6240\u6709\u5076\u6578\u5143\u7d20\u3002<\/p>\n<h2>filter() \u51fd\u6578\u7684\u512a\u9ede<\/h2>\n<p>Python \u7684 filter() \u51fd\u6578\u6709\u8a31\u591a\u512a\u9ede\uff0c\u5176\u4e2d\u6700\u5927\u7684\u4e00\u9ede\u5c31\u662f\u80fd\u5920\u8b93\u958b\u767c\u8005\u5feb\u901f\u5730\u904e\u6ffe\u51fa\u6240\u9700\u8cc7\u6599\uff0c\u907f\u514d\u4e86\u81ea\u5df1\u7de8\u5beb\u8ff4\u5708\u7684\u7e41\u7463\u6b65\u9a5f\u3002\u6b64\u5916\uff0cfilter() \u51fd\u6578\u9084\u53ef\u4ee5\u63a5\u53d7 None \u4f5c\u70ba\u7b2c\u4e00\u500b\u53c3\u6578\uff0c\u6b64\u6642\u6703\u5c07\u8cc7\u6599\u5e8f\u5217\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u50b3\u5165 function \u4e2d\uff0c\u6839\u64da function \u7684\u8fd4\u56de\u503c\u9032\u884c\u904e\u6ffe\u3002<\/p>\n<h2>\u9032\u968e\u61c9\u7528\uff1a\u7d50\u5408 lambda \u8868\u9054\u5f0f<\/h2>\n<p>\u9664\u4e86\u5b9a\u7fa9\u5e38\u898f\u51fd\u6578\u5916\uff0cfilter() \u51fd\u6578\u9084\u53ef\u4ee5\u8207 lambda \u8868\u9054\u5f0f\u7d50\u5408\u4f7f\u7528\uff0c\u4f7f\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\uff1a<\/p>\n<p>&#8220;`python<br \/>\nnumbers = [2, 5, 8, 10, 15, 20]\n<p>filtered_numbers = filter(lambda x: x > 10, numbers)<\/p>\n<p>print(list(filtered_numbers))<br \/>\n&#8220;`<\/p>\n<p>\u9019\u6a23\u7684\u5beb\u6cd5\u4e0d\u50c5\u7c21\u5316\u4e86\u4ee3\u78bc\uff0c\u9084\u63d0\u5347\u4e86\u53ef\u8b80\u6027\u3002<\/p>\n<h2>\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 filter() \u51fd\u6578\u6642\uff0c\u5e38\u898b\u7684\u932f\u8aa4\u5305\u62ec\uff1a<br \/>\n&#8211; \u78ba\u4fdd\u50b3\u5165\u7684 function \u8fd4\u56de\u5e03\u6797\u503c\u3002<br \/>\n&#8211; \u78ba\u4fdd iterable \u53c3\u6578\u662f\u53ef\u8fed\u4ee3\u7684\u8cc7\u6599\u7d50\u69cb\u3002<\/p>\n<p>\u5982\u679c\u9047\u5230\u554f\u984c\uff0c\u8acb\u6aa2\u67e5 function \u7684\u908f\u8f2f\u6216 iterable \u7684\u985e\u578b\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>Python \u7684 filter() \u51fd\u6578\u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u9ad8\u6548\u5730\u7be9\u9078\u8cc7\u6599\u3002\u4e86\u89e3\u5176\u7528\u6cd5\u53ca\u6700\u4f73\u5be6\u8e10\u5c07\u5927\u5927\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60f3\u6df1\u5165\u4e86\u89e3 Python \u7684\u5176\u4ed6\u529f\u80fd\uff0c\u6b61\u8fce\u53c3\u8003 [\u9019\u7bc7\u76f8\u95dc\u6559\u5b78](https:\/\/vocus.cc\/article\/645e4f65059aef001c4f7f3e)\uff01<\/p>\n<h2>Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<p>**Q1: filter() \u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u7be9\u9078\u54ea\u4e9b\u985e\u578b\u7684\u8cc7\u6599\uff1f**<br \/>\nA1: filter() \u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u7be9\u9078\u4efb\u4f55\u53ef\u8fed\u4ee3\u7684\u8cc7\u6599\u985e\u578b\uff0c\u5305\u62ec list\u3001tuple \u548c\u5b57\u5178\u7b49\u3002<\/p>\n<p>**Q2: filter() \u51fd\u6578\u7684\u8fd4\u56de\u7d50\u679c\u662f\u4ec0\u9ebc\u683c\u5f0f\uff1f**<br \/>\nA2: filter() \u51fd\u6578\u8fd4\u56de\u7684\u662f\u4e00\u500b filter \u5c0d\u8c61\uff0c\u9700\u8981\u4f7f\u7528 list() \u6216\u5176\u4ed6\u8cc7\u6599\u7d50\u69cb\u4f86\u8f49\u63db\u70ba\u53ef\u8b80\u7684\u683c\u5f0f\u3002<\/p>\n<p>**Q3: \u6211\u53ef\u4ee5\u540c\u6642\u4f7f\u7528\u591a\u500b\u689d\u4ef6\u4f86\u7be9\u9078\u8cc7\u6599\u55ce\uff1f**<br \/>\nA3: \u53ef\u4ee5\uff0c\u60a8\u53ef\u4ee5\u5728 function \u4e2d\u5be6\u73fe\u591a\u500b\u689d\u4ef6\u908f\u8f2f\uff0c\u6216\u4f7f\u7528 lambda \u8868\u9054\u5f0f\u4f86\u9054\u6210\u540c\u6a23\u7684\u6548\u679c\u3002<\/p>\n<p>&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Python\u7684Filter()\u51fd\u6578\uff0c\u53ef\u4ee5\u5feb\u901f\u7be9\u9078\u51fa\u6eff\u8db3\u689d\u4ef6\u7684\u8cc7\u6599\uff0c\u8b93\u4f60\u66f4\u6709\u6548\u7387\u7684\u8655\u7406\u8cc7\u6599\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-3438","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-Ts","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3438","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=3438"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3438\/revisions"}],"predecessor-version":[{"id":12834,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3438\/revisions\/12834"}],"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=3438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}