{"id":934189,"date":"2024-12-26T18:30:51","date_gmt":"2024-12-26T10:30:51","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/934189.html"},"modified":"2024-12-26T18:30:53","modified_gmt":"2024-12-26T10:30:53","slug":"%e9%99%8d%e5%ba%8f%e5%a6%82%e4%bd%95%e6%93%8d%e4%bd%9c-python","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/934189.html","title":{"rendered":"\u964d\u5e8f\u5982\u4f55\u64cd\u4f5c python"},"content":{"rendered":"

\"\u964d\u5e8f\u5982\u4f55\u64cd\u4f5c<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u4e3b\u8981\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u3001\u5217\u8868\u7684sort()<\/code>\u65b9\u6cd5\u3001\u4ee5\u53ca\u7ed3\u5408lambda<\/code>\u51fd\u6570\u8fdb\u884c\u81ea\u5b9a\u4e49\u6392\u5e8f<\/strong>\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u51e0\u79cd\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528 sorted()<\/code> \u51fd\u6570<\/h3>\n<\/p>\n

sorted()<\/code> \u662f\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u6392\u5e8f\u5217\u8868\uff0c\u800c\u4e0d\u6539\u53d8\u539f\u5217\u8868\u3002\u8981\u5b9e\u73b0\u964d\u5e8f\u6392\u5e8f\uff0c\u53ef\u4ee5\u5728\u8be5\u51fd\u6570\u4e2d\u4f7f\u7528 reverse=True<\/code> \u53c2\u6570\u3002<\/p>\n<\/p>\n

# \u793a\u4f8b\u4ee3\u7801<\/p>\n
numbers = [5, 2, 9, 1, 5, 6]<\/p>\n
sorted_numbers = sorted(numbers, reverse=True)<\/p>\n
print(sorted_numbers)  # \u8f93\u51fa: [9, 6, 5, 5, 2, 1]<\/p>\n
<\/code><\/pre>\n<\/p>\n
sorted()<\/code> \u51fd\u6570\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u4e0d\u4f1a\u4fee\u6539\u539f\u59cb\u5217\u8868\uff0c\u800c\u662f\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u6392\u5e8f\u540e\u7684\u5217\u8868<\/strong>\u3002\u8fd9\u5bf9\u4e8e\u9700\u8981\u4fdd\u7559\u539f\u5217\u8868\u6570\u636e\u7684\u60c5\u51b5\u7279\u522b\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u5217\u8868\u7684 sort()<\/code> \u65b9\u6cd5<\/h3>\n<\/p>\n
sort()<\/code> \u662f\u5217\u8868\u5bf9\u8c61\u7684\u65b9\u6cd5\uff0c\u8c03\u7528\u5b83\u4f1a\u5bf9\u5217\u8868\u8fdb\u884c\u539f\u5730\u6392\u5e8f\u3002\u8981\u5b9e\u73b0\u964d\u5e8f\u6392\u5e8f\uff0c\u540c\u6837\u9700\u8981\u8bbe\u7f6e reverse=True<\/code>\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b\u4ee3\u7801<\/p>\n
numbers = [5, 2, 9, 1, 5, 6]<\/p>\n
numbers.sort(reverse=True)<\/p>\n
print(numbers)  # \u8f93\u51fa: [9, 6, 5, 5, 2, 1]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e0e sorted()<\/code> \u4e0d\u540c\uff0csort()<\/code> \u65b9\u6cd5\u76f4\u63a5\u5728\u539f\u5217\u8868\u4e0a\u8fdb\u884c\u6392\u5e8f\uff0c\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u5217\u8868<\/strong>\u3002\u5982\u679c\u4e0d\u9700\u8981\u4fdd\u7559\u539f\u59cb\u987a\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u7ed3\u5408 lambda<\/code> \u51fd\u6570\u8fdb\u884c\u81ea\u5b9a\u4e49\u6392\u5e8f<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u5bf9\u5305\u542b\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u5217\u8868\u8fdb\u884c\u6392\u5e8f\uff0c\u6bd4\u5982\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u5143\u7ec4\u6216\u5b57\u5178\u3002\u8fd9\u65f6\u53ef\u4ee5\u4f7f\u7528 lambda<\/code> \u51fd\u6570\u81ea\u5b9a\u4e49\u6392\u5e8f\u903b\u8f91\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b\u4ee3\u7801<\/p>\n
students = [('John', 88), ('Emma', 92), ('Daniel', 85)]<\/p>\n
students_sorted = sorted(students, key=lambda student: student[1], reverse=True)<\/p>\n
print(students_sorted)  # \u8f93\u51fa: [('Emma', 92), ('John', 88), ('Daniel', 85)]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clambda<\/code> \u51fd\u6570\u88ab\u7528\u4f5c key<\/code> \u53c2\u6570\u7684\u503c\uff0c\u7528\u6765\u6307\u660e\u6392\u5e8f\u4f9d\u636e\u662f\u6bcf\u4e2a\u5143\u7ec4\u7684\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff08\u5373\u5206\u6570\uff09<\/strong>\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u7075\u6d3b\u6392\u5e8f\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528 numpy<\/code> \u5e93\u8fdb\u884c\u6392\u5e8f<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u6570\u503c\u8ba1\u7b97\u8f83\u591a\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528 numpy<\/code> \u5e93\u6765\u8fdb\u884c\u6392\u5e8f\u64cd\u4f5c\u3002numpy<\/code> \u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u7ec4\u64cd\u4f5c\u529f\u80fd\uff0c\u9002\u5408\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b\u4ee3\u7801<\/p>\n
import numpy as np<\/p>\n
numbers = np.array([5, 2, 9, 1, 5, 6])<\/p>\n
sorted_numbers = np.sort(numbers)[::-1]  # \u4f7f\u7528\u5207\u7247\u8fdb\u884c\u964d\u5e8f<\/p>\n
print(sorted_numbers)  # \u8f93\u51fa: [9 6 5 5 2 1]<\/p>\n
<\/code><\/pre>\n<\/p>\n
numpy<\/code> \u7684 sort()<\/code> \u51fd\u6570\u8fd4\u56de\u7684\u662f\u5347\u5e8f\u6392\u5e8f\u540e\u7684\u6570\u7ec4\uff0c\u901a\u8fc7\u6570\u7ec4\u5207\u7247\u53ef\u4ee5\u65b9\u4fbf\u5730\u5c06\u5176\u8f6c\u4e3a\u964d\u5e8f<\/strong>\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u5904\u7406\u5927\u91cf\u6570\u636e\uff0c\u56e0\u4e3a numpy<\/code> \u5728\u6027\u80fd\u4e0a\u901a\u5e38\u4f18\u4e8e\u7eaf Python \u7684\u5217\u8868\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5728\u6570\u636e\u6846\u4e2d\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f<\/h3>\n<\/p>\n
\u5f53\u4f7f\u7528 pandas<\/code> \u5e93\u6765\u5904\u7406\u8868\u683c\u6570\u636e\u65f6\uff0c\u4e5f\u53ef\u4ee5\u5bf9\u6570\u636e\u6846\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002pandas<\/code> \u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u6392\u5e8f\u529f\u80fd\uff0c\u53ef\u4ee5\u6839\u636e\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b\u4ee3\u7801<\/p>\n
import pandas as pd<\/p>\n
data = {'Name': ['John', 'Emma', 'Daniel'],<\/p>\n
        'Score': [88, 92, 85]}<\/p>\n
df = pd.DataFrame(data)<\/p>\n
df_sorted = df.sort_values(by='Score', ascending=False)<\/p>\n
print(df_sorted)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728 pandas<\/code> \u4e2d\uff0csort_values()<\/code> \u51fd\u6570\u53ef\u4ee5\u6309\u6307\u5b9a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u901a\u8fc7\u8bbe\u7f6e ascending=False<\/code> \u5b9e\u73b0\u964d\u5e8f<\/strong>\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u5bf9\u7ed3\u6784\u5316\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u5206\u6790\u3002<\/p>\n<\/p>\n
\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u7684\u9009\u62e9\u975e\u5e38\u591a\u6837\u5316\u3002\u4ece\u7b80\u5355\u7684\u5185\u7f6e\u51fd\u6570\u548c\u65b9\u6cd5\u5230\u9002\u7528\u4e8e\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u81ea\u5b9a\u4e49\u6392\u5e8f\uff0c\u518d\u5230\u9ad8\u6548\u7684\u79d1\u5b66\u8ba1\u7b97\u5e93 numpy<\/code> \u548c\u6570\u636e\u5206\u6790\u5e93 pandas<\/code>\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u5404\u6709\u4f18\u52bf\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u6839\u636e\u6570\u636e\u7c7b\u578b\u548c\u5e94\u7528\u573a\u666f\u6765\u51b3\u5b9a\u3002\u901a\u8fc7\u5bf9\u8fd9\u4e9b\u65b9\u6cd5\u7684\u638c\u63e1\uff0c\u53ef\u4ee5\u66f4\u52a0\u9ad8\u6548\u548c\u7075\u6d3b\u5730\u5904\u7406\u6570\u636e\u6392\u5e8f\u9700\u6c42\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684sort()<\/code>\u65b9\u6cd5\u6216sorted()<\/code>\u51fd\u6570\u6765\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u4f7f\u7528sort()<\/code>\u65b9\u6cd5\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6ereverse=True<\/code>\u53c2\u6570\u6765\u5b9e\u73b0\u964d\u5e8f\u3002\u4f8b\u5982\uff1a  <\/p>\n
my_list = [3, 1, 4, 2]\nmy_list.sort(reverse=True)\nprint(my_list)  # \u8f93\u51fa: [4, 3, 2, 1]\n<\/code><\/pre>\n
\u5982\u679c\u4f7f\u7528sorted()<\/code>\u51fd\u6570\uff0c\u5219\u53ef\u4ee5\u76f4\u63a5\u4f20\u9012\u5217\u8868\u548creverse=True<\/code>\u53c2\u6570\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
my_list = [3, 1, 4, 2]\nsorted_list = sorted(my_list, reverse=True)\nprint(sorted_list)  # \u8f93\u51fa: [4, 3, 2, 1]\n<\/code><\/pre>\n
Python\u652f\u6301\u54ea\u4e9b\u6570\u636e\u7c7b\u578b\u7684\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
Python\u652f\u6301\u591a\u79cd\u6570\u636e\u7c7b\u578b\u7684\u964d\u5e8f\u6392\u5e8f\uff0c\u5305\u62ec\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u7b49\u3002\u5bf9\u5b57\u7b26\u4e32\u6392\u5e8f\u65f6\uff0c\u901a\u5e38\u662f\u6309\u5b57\u6bcd\u987a\u5e8f\u8fdb\u884c\u7684\u3002\u4f8b\u5982\uff1a  <\/p>\n
str_list = ['banana', 'apple', 'cherry']\nstr_list.sort(reverse=True)\nprint(str_list)  # \u8f93\u51fa: ['cherry', 'banana', 'apple']\n<\/code><\/pre>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u4e4b\u95f4\u65e0\u6cd5\u76f4\u63a5\u8fdb\u884c\u6392\u5e8f\uff0c\u786e\u4fdd\u5217\u8868\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u4e00\u81f4\u3002<\/p>\n
\u5982\u4f55\u5bf9\u5b57\u5178\u4e2d\u7684\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u5bf9\u5b57\u5178\u7684\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u65b9\u6cd5\u662f\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u7ed3\u5408key<\/code>\u53c2\u6570\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
my_dict = {'a': 3, 'b': 1, 'c': 2}\nsorted_dict = dict(sorted(my_dict.items(), key=lambda item: item[1], reverse=True))\nprint(sorted_dict)  # \u8f93\u51fa: {'a': 3, 'c': 2, 'b': 1}\n<\/code><\/pre>\n
\u8fd9\u6837\u53ef\u4ee5\u5c06\u5b57\u5178\u6309\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5b57\u5178\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u4e3b\u8981\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528sorted()\u51fd\u6570\u3001\u5217\u8868\u7684sort() […]","protected":false},"author":3,"featured_media":934192,"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\/934189"}],"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=934189"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/934189\/revisions"}],"predecessor-version":[{"id":934193,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/934189\/revisions\/934193"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/934192"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=934189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=934189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=934189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}