{"id":1090648,"date":"2025-01-08T14:04:27","date_gmt":"2025-01-08T06:04:27","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1090648.html"},"modified":"2025-01-08T14:04:30","modified_gmt":"2025-01-08T06:04:30","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e6%9b%b4%e6%94%b9%e9%9b%86%e5%90%88%e4%b8%ad%e7%9a%84%e5%80%bc-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1090648.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u66f4\u6539\u96c6\u5408\u4e2d\u7684\u503c"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u66f4\u6539\u96c6\u5408\u4e2d\u7684\u503c\"<\/p>\n

\u5728Python\u4e2d\u66f4\u6539\u96c6\u5408\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a\u521b\u5efa\u65b0\u96c6\u5408\u3001\u5220\u9664\u548c\u6dfb\u52a0\u5143\u7d20\u3001\u4f7f\u7528\u96c6\u5408\u7684\u5dee\u96c6\u8fd0\u7b97<\/strong>\u3002\u9996\u5148\uff0c\u8981\u7406\u89e3\u7684\u662f\uff0c\u96c6\u5408\uff08set\uff09\u662f\u4e00\u79cd\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u7684\u5143\u7d20\u96c6\u5408\uff0c\u56e0\u6b64\u4e0d\u80fd\u901a\u8fc7\u7d22\u5f15\u76f4\u63a5\u66f4\u6539\u96c6\u5408\u4e2d\u7684\u503c\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63cf\u8ff0\u6bcf\u79cd\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u521b\u5efa\u65b0\u96c6\u5408<\/h3>\n<\/p>\n

\u7531\u4e8e\u96c6\u5408\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u5176\u4e2d\u7684\u5143\u7d20\uff0c\u56e0\u6b64\u4e00\u79cd\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u96c6\u5408\uff0c\u5e76\u5c06\u6240\u9700\u7684\u4fee\u6539\u5e94\u7528\u5230\u65b0\u96c6\u5408\u4e2d\u3002<\/p>\n<\/p>\n

original_set = {1, 2, 3, 4}<\/p>\n
new_set = {x if x != 3 else 5 for x in original_set}<\/p>\n
print(new_set)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u96c6\u5408 new_set<\/code>\uff0c\u5c06\u539f\u96c6\u5408 original_set<\/code> \u4e2d\u7684\u5143\u7d20 3 \u66ff\u6362\u4e3a 5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5220\u9664\u548c\u6dfb\u52a0\u5143\u7d20<\/h3>\n<\/p>\n
\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u5229\u7528\u96c6\u5408\u7684 remove<\/code> \u65b9\u6cd5\u5220\u9664\u9700\u8981\u66f4\u6539\u7684\u5143\u7d20\uff0c\u7136\u540e\u4f7f\u7528 add<\/code> \u65b9\u6cd5\u6dfb\u52a0\u65b0\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3, 4}<\/p>\n
my_set.remove(3)<\/p>\n
my_set.add(5)<\/p>\n
print(my_set)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u6837\u6211\u4eec\u5c31\u5c06\u96c6\u5408 {1, 2, 3, 4}<\/code> \u4e2d\u7684\u5143\u7d20 3 \u66ff\u6362\u4e3a 5\uff0c\u5f97\u5230 {1, 2, 4, 5}<\/code>\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u96c6\u5408\u7684\u5dee\u96c6\u8fd0\u7b97<\/h3>\n<\/p>\n
\u53ef\u4ee5\u5229\u7528\u96c6\u5408\u7684\u5dee\u96c6\u8fd0\u7b97\u6765\u8fdb\u884c\u66f4\u6539\u503c\u7684\u64cd\u4f5c\u3002\u9996\u5148\u5220\u9664\u9700\u8981\u66f4\u6539\u7684\u503c\uff0c\u7136\u540e\u6dfb\u52a0\u65b0\u7684\u503c\u3002<\/p>\n<\/p>\n
original_set = {1, 2, 3, 4}<\/p>\n
to_remove = {3}<\/p>\n
to_add = {5}<\/p>\n
result_set = (original_set - to_remove) | to_add<\/p>\n
print(result_set)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u539f\u96c6\u5408 {1, 2, 3, 4}<\/code> \u4e2d\u7684 3 \u66ff\u6362\u4e3a 5\uff0c\u5f97\u5230\u65b0\u7684\u96c6\u5408 {1, 2, 4, 5}<\/code>\u3002<\/p>\n<\/p>\n
\u56db\u3001\u7ed3\u5408\u591a\u79cd\u65b9\u6cd5\u8fdb\u884c\u590d\u6742\u64cd\u4f5c<\/h3>\n<\/p>\n
\u6709\u65f6\u9700\u8981\u8fdb\u884c\u66f4\u590d\u6742\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u540c\u65f6\u66f4\u6539\u591a\u4e2a\u503c\u3002\u8fd9\u65f6\u53ef\u4ee5\u7ed3\u5408\u4e0a\u8ff0\u65b9\u6cd5\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<\/p>\n
original_set = {1, 2, 3, 4, 5, 6}<\/p>\n
changes = {3: 30, 5: 50}<\/p>\n
new_set = {changes.get(x, x) for x in original_set}<\/p>\n
print(new_set)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u5178 changes<\/code> \u6765\u6307\u5b9a\u9700\u8981\u66ff\u6362\u7684\u503c\uff0c\u5c06 3 \u66ff\u6362\u4e3a 30\uff0c\u5c06 5 \u66ff\u6362\u4e3a 50\u3002<\/p>\n<\/p>\n
\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\u66f4\u6539\u96c6\u5408\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u65b0\u96c6\u5408\u3001\u5220\u9664\u548c\u6dfb\u52a0\u5143\u7d20\u3001\u4f7f\u7528\u96c6\u5408\u7684\u5dee\u96c6\u8fd0\u7b97\u7b49\u65b9\u6cd5\u5b9e\u73b0\u3002\u7406\u89e3\u96c6\u5408\u7684\u4e0d\u53ef\u53d8\u7279\u6027\uff0c\u5e76\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u9ad8\u6548\u5730\u8fdb\u884c\u96c6\u5408\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u6ce8\u610f\u4e8b\u9879\uff1a<\/h4>\n<\/p>\n
    \n
  1. \u96c6\u5408\u7684\u65e0\u5e8f\u6027<\/strong>\uff1a\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u662f\u65e0\u5e8f\u7684\uff0c\u56e0\u6b64\u5728\u5904\u7406\u96c6\u5408\u65f6\uff0c\u4e0d\u8981\u4f9d\u8d56\u5143\u7d20\u7684\u987a\u5e8f\u3002<\/li>\n
  2. \u5143\u7d20\u7684\u552f\u4e00\u6027<\/strong>\uff1a\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u662f\u552f\u4e00\u7684\uff0c\u5982\u679c\u8bd5\u56fe\u6dfb\u52a0\u91cd\u590d\u7684\u5143\u7d20\uff0c\u96c6\u5408\u4f1a\u81ea\u52a8\u5ffd\u7565\u3002<\/li>\n
  3. \u6027\u80fd\u8003\u8651<\/strong>\uff1a\u5220\u9664\u548c\u6dfb\u52a0\u5143\u7d20\u7684\u64cd\u4f5c\u5177\u6709\u8f83\u9ad8\u7684\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u5927\u578b\u96c6\u5408\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u6027\u80fd\u95ee\u9898\u3002<\/li>\n<\/ol>\n
    \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u548c\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u7406\u89e3\u548c\u64cd\u4f5cPython\u96c6\u5408\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5728Python\u4e2d\uff0c\u96c6\u5408\u7684\u503c\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u5417\uff1f<\/strong>
    \u96c6\u5408\u662f\u4e00\u79cd\u65e0\u5e8f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4e0d\u80fd\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u5176\u5143\u7d20\uff0c\u56e0\u6b64\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u96c6\u5408\u4e2d\u7684\u7279\u5b9a\u503c\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u96c6\u5408\u7684\u5185\u5bb9\uff0c\u901a\u5e38\u7684\u505a\u6cd5\u662f\u5220\u9664\u65e7\u503c\u5e76\u6dfb\u52a0\u65b0\u503c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528remove()<\/code>\u65b9\u6cd5\u5220\u9664\u67d0\u4e2a\u5143\u7d20\uff0c\u518d\u4f7f\u7528add()<\/code>\u65b9\u6cd5\u6dfb\u52a0\u65b0\u5143\u7d20\u3002<\/p>\n
    \u5982\u679c\u6211\u60f3\u5728\u96c6\u5408\u4e2d\u66ff\u6362\u7279\u5b9a\u5143\u7d20\uff0c\u5e94\u8be5\u600e\u4e48\u505a\uff1f<\/strong>
    \u7531\u4e8e\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u65e0\u6cd5\u76f4\u63a5\u66ff\u6362\u3002\u5982\u679c\u60a8\u60f3\u201c\u66ff\u6362\u201d\u67d0\u4e2a\u5143\u7d20\uff0c\u60a8\u9700\u8981\u5148\u5220\u9664\u8be5\u5143\u7d20\uff0c\u7136\u540e\u518d\u6dfb\u52a0\u65b0\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u6709\u4e00\u4e2a\u96c6\u5408my_set = {1, 2, 3}<\/code>\uff0c\u60f3\u8981\u5c062<\/code>\u66ff\u6362\u4e3a5<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a  <\/p>\n
    my_set.remove(2)\nmy_set.add(5)\n<\/code><\/pre>\n
    \u96c6\u5408\u4e2d\u5982\u4f55\u5904\u7406\u91cd\u590d\u503c\uff1f<\/strong>
    \u96c6\u5408\u7684\u4e00\u4e2a\u91cd\u8981\u7279\u6027\u662f\u5b83\u4e0d\u5141\u8bb8\u91cd\u590d\u503c\u3002\u8fd9\u610f\u5473\u7740\u5982\u679c\u60a8\u8bd5\u56fe\u5c06\u4e00\u4e2a\u5df2\u5b58\u5728\u7684\u5143\u7d20\u6dfb\u52a0\u5230\u96c6\u5408\u4e2d\uff0c\u96c6\u5408\u5c06\u4fdd\u6301\u4e0d\u53d8\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u4e2a\u96c6\u5408my_set = {1, 2, 3}<\/code>\uff0c\u5e76\u5c1d\u8bd5\u6267\u884cmy_set.add(2)<\/code>\uff0c\u96c6\u5408\u4ecd\u5c06\u4fdd\u6301\u4e3a{1, 2, 3}<\/code>\uff0c\u56e0\u4e3a2<\/code>\u5df2\u7ecf\u5b58\u5728\u4e8e\u96c6\u5408\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u66f4\u6539\u96c6\u5408\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a\u521b\u5efa\u65b0\u96c6\u5408\u3001\u5220\u9664\u548c\u6dfb\u52a0\u5143\u7d20\u3001\u4f7f\u7528\u96c6\u5408\u7684\u5dee\u96c6\u8fd0\u7b97\u3002\u9996\u5148\uff0c\u8981 […]","protected":false},"author":3,"featured_media":1090656,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1090648"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1090648"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1090648\/revisions"}],"predecessor-version":[{"id":1090659,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1090648\/revisions\/1090659"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1090656"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1090648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1090648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1090648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}