{"id":1132025,"date":"2025-01-08T20:53:36","date_gmt":"2025-01-08T12:53:36","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1132025.html"},"modified":"2025-01-08T20:53:38","modified_gmt":"2025-01-08T12:53:38","slug":"python%e5%a6%82%e4%bd%95%e5%8f%96%e5%ad%97%e5%85%b8%e7%9a%84%e9%83%a8%e5%88%86%e4%bf%a1%e6%81%af%e6%9d%a5%e6%8e%92%e5%88%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1132025.html","title":{"rendered":"python\u5982\u4f55\u53d6\u5b57\u5178\u7684\u90e8\u5206\u4fe1\u606f\u6765\u6392\u5217"},"content":{"rendered":"

\"python\u5982\u4f55\u53d6\u5b57\u5178\u7684\u90e8\u5206\u4fe1\u606f\u6765\u6392\u5217\"<\/p>\n

Python\u4e2d\u53d6\u5b57\u5178\u7684\u90e8\u5206\u4fe1\u606f\u5e76\u8fdb\u884c\u6392\u5217\u7684\u6838\u5fc3\u65b9\u6cd5\u662f\uff1a\u4f7f\u7528\u5b57\u5178\u89e3\u6790\u3001sorted\u51fd\u6570\u3001lambda\u8868\u8fbe\u5f0f\u3002<\/strong><\/p>\n<\/p>\n

\u5b57\u5178\u89e3\u6790<\/strong>\u662f\u4e00\u79cd\u521b\u5efa\u5b57\u5178\u7684\u7b80\u6d01\u65b9\u5f0f\uff0csorted\u51fd\u6570<\/strong>\u53ef\u4ee5\u5bf9\u5b57\u5178\u7684\u9879\u8fdb\u884c\u6392\u5e8f\uff0clambda\u8868\u8fbe\u5f0f<\/strong>\u5219\u53ef\u4ee5\u7528\u4e8e\u81ea\u5b9a\u4e49\u6392\u5e8f\u7684\u89c4\u5219\u3002\u4e0b\u9762\u6211\u4eec\u8be6\u7ec6\u8ba8\u8bba\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5b57\u5178\u89e3\u6790<\/h2>\n<\/p>\n

\u5b57\u5178\u89e3\u6790\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u521b\u5efa\u5b57\u5178\u7684\u65b9\u6cd5\u3002\u5b83\u5141\u8bb8\u6211\u4eec\u901a\u8fc7\u4e00\u884c\u4ee3\u7801\u4ece\u73b0\u6709\u5b57\u5178\u4e2d\u63d0\u53d6\u90e8\u5206\u4fe1\u606f\u5e76\u521b\u5efa\u65b0\u5b57\u5178\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n

original_dict = {'a': 1, 'b': 2, 'c': 3, 'd': 4}<\/p>\n
partial_dict = {k: original_dict[k] for k in ('a', 'c')}<\/p>\n
print(partial_dict)  # \u8f93\u51fa: {'a': 1, 'c': 3}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u5178\u89e3\u6790\u4eceoriginal_dict<\/code>\u4e2d\u63d0\u53d6\u4e86\u952e\u4e3a'a'<\/code>\u548c'c'<\/code>\u7684\u9879\uff0c\u5e76\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u5b57\u5178partial_dict<\/code>\u3002<\/p>\n<\/p>\n
\u4e8c\u3001sorted\u51fd\u6570<\/h2>\n<\/p>\n
sorted<\/code>\u51fd\u6570\u53ef\u4ee5\u7528\u6765\u5bf9\u5b57\u5178\u7684\u9879\u8fdb\u884c\u6392\u5e8f\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u5b57\u5178\u7684\u952e\u6216\u503c\u6765\u6392\u5e8f\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
original_dict = {'a': 3, 'b': 1, 'c': 2}<\/p>\n
sorted_dict = dict(sorted(original_dict.items(), key=lambda item: item[1]))<\/p>\n
print(sorted_dict)  # \u8f93\u51fa: {'b': 1, 'c': 2, 'a': 3}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528sorted<\/code>\u51fd\u6570\u5bf9\u5b57\u5178\u7684\u503c\u8fdb\u884c\u4e86\u6392\u5e8f\uff0c\u5e76\u4f7f\u7528dict<\/code>\u51fd\u6570\u5c06\u6392\u5e8f\u540e\u7684\u7ed3\u679c\u91cd\u65b0\u8f6c\u6362\u4e3a\u5b57\u5178\u3002<\/p>\n<\/p>\n
\u4e09\u3001lambda\u8868\u8fbe\u5f0f<\/h2>\n<\/p>\n
lambda<\/code>\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u533f\u540d\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u5b9a\u4e49\u7b80\u5355\u7684\u6392\u5e8f\u89c4\u5219\u3002\u6211\u4eec\u53ef\u4ee5\u7ed3\u5408sorted<\/code>\u51fd\u6570\u548clambda<\/code>\u8868\u8fbe\u5f0f\u6765\u5bf9\u5b57\u5178\u8fdb\u884c\u590d\u6742\u7684\u6392\u5e8f\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
original_dict = {'a': 3, 'b': 1, 'c': 2}<\/p>\n
sorted_dict_by_key = dict(sorted(original_dict.items(), key=lambda item: item[0]))<\/p>\n
print(sorted_dict_by_key)  # \u8f93\u51fa: {'a': 3, 'b': 1, 'c': 2}<\/p>\n
sorted_dict_by_value = dict(sorted(original_dict.items(), key=lambda item: item[1]))<\/p>\n
print(sorted_dict_by_value)  # \u8f93\u51fa: {'b': 1, 'c': 2, 'a': 3}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5206\u522b\u6839\u636e\u5b57\u5178\u7684\u952e\u548c\u503c\u5bf9\u5b57\u5178\u8fdb\u884c\u4e86\u6392\u5e8f\u3002<\/p>\n<\/p>\n
\u56db\u3001\u7ed3\u5408\u4f7f\u7528<\/h2>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u7ed3\u5408\u4f7f\u7528\u5b57\u5178\u89e3\u6790\u3001sorted\u51fd\u6570\u548clambda\u8868\u8fbe\u5f0f\u6765\u5b9e\u73b0\u590d\u6742\u7684\u64cd\u4f5c\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7efc\u5408\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
original_dict = {'apple': 5, 'banana': 3, 'cherry': 7, 'date': 2}<\/p>\n
\u63d0\u53d6\u90e8\u5206\u4fe1\u606f<\/strong><\/h2>\n
partial_dict = {k: original_dict[k] for k in ('apple', 'cherry', 'date')}<\/p>\n
\u5bf9\u63d0\u53d6\u7684\u4fe1\u606f\u8fdb\u884c\u6392\u5e8f<\/strong><\/h2>\n
sorted_partial_dict = dict(sorted(partial_dict.items(), key=lambda item: item[1]))<\/p>\n
print(sorted_partial_dict)  # \u8f93\u51fa: {'date': 2, 'apple': 5, 'cherry': 7}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528\u5b57\u5178\u89e3\u6790\u63d0\u53d6\u4e86\u90e8\u5206\u4fe1\u606f\uff0c\u7136\u540e\u4f7f\u7528sorted\u51fd\u6570\u548clambda\u8868\u8fbe\u5f0f\u5bf9\u63d0\u53d6\u7684\u4fe1\u606f\u8fdb\u884c\u4e86\u6392\u5e8f\uff0c\u6700\u540e\u5f97\u5230\u4e86\u6392\u5e8f\u540e\u7684\u5b57\u5178\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5b9e\u6218\u6848\u4f8b<\/h2>\n<\/p>\n
\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\u8fd9\u4e9b\u65b9\u6cd5\u7684\u5e94\u7528\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u66f4\u590d\u6742\u7684\u5b9e\u6218\u6848\u4f8b\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b\u5b66\u751f\u6210\u7ee9\u7684\u5b57\u5178\uff0c\u6211\u4eec\u9700\u8981\u63d0\u53d6\u90e8\u5206\u5b66\u751f\u7684\u6210\u7ee9\u5e76\u6309\u7167\u6210\u7ee9\u4ece\u9ad8\u5230\u4f4e\u8fdb\u884c\u6392\u5e8f\uff1a<\/p>\n<\/p>\n
students_scores = {<\/p>\n
    'Alice': 85,<\/p>\n
    'Bob': 92,<\/p>\n
    'Charlie': 87,<\/p>\n
    'David': 78,<\/p>\n
    'Eve': 90<\/p>\n
}<\/p>\n
\u63d0\u53d6\u90e8\u5206\u5b66\u751f\u7684\u6210\u7ee9<\/strong><\/h2>\n
selected_students = ['Alice', 'Charlie', 'Eve']<\/p>\n
partial_scores = {student: students_scores[student] for student in selected_students}<\/p>\n
\u6309\u6210\u7ee9\u4ece\u9ad8\u5230\u4f4e\u6392\u5e8f<\/strong><\/h2>\n
sorted_partial_scores = dict(sorted(partial_scores.items(), key=lambda item: item[1], reverse=True))<\/p>\n
print(sorted_partial_scores)  # \u8f93\u51fa: {'Eve': 90, 'Charlie': 87, 'Alice': 85}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u63d0\u53d6\u4e86Alice<\/code>\u3001Charlie<\/code>\u548cEve<\/code>\u7684\u6210\u7ee9\uff0c\u7136\u540e\u4f7f\u7528sorted<\/code>\u51fd\u6570\u548clambda<\/code>\u8868\u8fbe\u5f0f\u5bf9\u8fd9\u4e9b\u6210\u7ee9\u8fdb\u884c\u4e86\u4ece\u9ad8\u5230\u4f4e\u7684\u6392\u5e8f\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u8fd9\u4e9b\u4f8b\u5b50\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5b57\u5178\u89e3\u6790\u3001sorted\u51fd\u6570\u548clambda\u8868\u8fbe\u5f0f<\/strong>\u662f\u5904\u7406\u5b57\u5178\u7684\u5f3a\u5927\u5de5\u5177\u3002\u65e0\u8bba\u662f\u63d0\u53d6\u90e8\u5206\u4fe1\u606f\u8fd8\u662f\u5bf9\u4fe1\u606f\u8fdb\u884c\u6392\u5e8f\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u80fd\u5e2e\u52a9\u6211\u4eec\u7b80\u5316\u4ee3\u7801\u5e76\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5728Python\u4e2d\uff0c\u5982\u4f55\u4ece\u5b57\u5178\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u952e\u503c\u5bf9\uff1f<\/strong>
\u8981\u4ece\u5b57\u5178\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u952e\u503c\u5bf9\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b57\u5178\u7684\u952e\u6765\u8bbf\u95ee\u5176\u503c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u5178\u7684\u5207\u7247\u6216\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u63d0\u53d6\u9700\u8981\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a  <\/p>\n
my_dict = {'a': 1, 'b': 2, 'c': 3}\nselected_keys = ['a', 'c']\nfiltered_dict = {k: my_dict[k] for k in selected_keys if k in my_dict}\nprint(filtered_dict)  # \u8f93\u51fa: {'a': 1, 'c': 3}\n<\/code><\/pre>\n
\u5982\u4f55\u5bf9\u5b57\u5178\u4e2d\u7684\u503c\u8fdb\u884c\u6392\u5e8f\uff1f<\/strong>
\u53ef\u4ee5\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u5bf9\u5b57\u5178\u4e2d\u7684\u503c\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u4f7f\u7528key<\/code>\u53c2\u6570\u6307\u5b9a\u6392\u5e8f\u4f9d\u636e\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60f3\u6839\u636e\u5b57\u5178\u7684\u503c\u8fdb\u884c\u5347\u5e8f\u6392\u5217\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a  <\/p>\n
my_dict = {'a': 3, 'b': 1, 'c': 2}\nsorted_dict = dict(sorted(my_dict.items(), key=lambda item: item[1]))\nprint(sorted_dict)  # \u8f93\u51fa: {'b': 1, 'c': 2, 'a': 3}\n<\/code><\/pre>\n
\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u6761\u4ef6\u8fc7\u6ee4\u5b57\u5178\u7684\u4fe1\u606f\uff1f<\/strong>
\u786e\u5b9e\u53ef\u4ee5\u901a\u8fc7\u6761\u4ef6\u8fc7\u6ee4\u5b57\u5178\u4e2d\u7684\u4fe1\u606f\u3002\u901a\u8fc7\u5b57\u5178\u63a8\u5bfc\u5f0f\u53ef\u4ee5\u5b9e\u73b0\u6b64\u529f\u80fd\uff0c\u4f7f\u7528\u6761\u4ef6\u8bed\u53e5\u6765\u9009\u62e9\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u952e\u503c\u5bf9\u3002\u4f8b\u5982\uff0c\u63d0\u53d6\u503c\u5927\u4e8e1\u7684\u952e\u503c\u5bf9\uff1a  <\/p>\n
my_dict = {'a': 1, 'b': 2, 'c': 3}\nfiltered_dict = {k: v for k, v in my_dict.items() if v > 1}\nprint(filtered_dict)  # \u8f93\u51fa: {'b': 2, 'c': 3}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"Python\u4e2d\u53d6\u5b57\u5178\u7684\u90e8\u5206\u4fe1\u606f\u5e76\u8fdb\u884c\u6392\u5217\u7684\u6838\u5fc3\u65b9\u6cd5\u662f\uff1a\u4f7f\u7528\u5b57\u5178\u89e3\u6790\u3001sorted\u51fd\u6570\u3001lambda\u8868\u8fbe\u5f0f\u3002 \u5b57 […]","protected":false},"author":3,"featured_media":1132034,"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\/1132025"}],"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=1132025"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1132025\/revisions"}],"predecessor-version":[{"id":1132038,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1132025\/revisions\/1132038"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1132034"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1132025"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1132025"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1132025"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}