{"id":956102,"date":"2024-12-27T02:28:44","date_gmt":"2024-12-26T18:28:44","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/956102.html"},"modified":"2024-12-27T02:28:46","modified_gmt":"2024-12-26T18:28:46","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e9%99%8d%e5%ba%8f%e6%8e%92%e5%88%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/956102.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u964d\u5e8f\u6392\u5217"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u964d\u5e8f\u6392\u5217\"<\/p>\n

\u5728Python\u4e2d\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u3002\u5176\u4e2d\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684sort()<\/code>\u65b9\u6cd5\u3001sorted()<\/code>\u51fd\u6570\u4ee5\u53ca\u57fa\u4e8e\u81ea\u5b9a\u4e49\u51fd\u6570\u7684\u6392\u5e8f\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528\u5217\u8868\u7684sort()<\/code>\u65b9\u6cd5\u5e76\u8bbe\u7f6e\u53c2\u6570reverse=True<\/code>\u3001\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u540c\u6837\u8bbe\u7f6e\u53c2\u6570reverse=True<\/code>\u3001\u4ee5\u53ca\u901a\u8fc7\u81ea\u5b9a\u4e49\u6bd4\u8f83\u51fd\u6570\u8fdb\u884c\u6392\u5e8f<\/strong>\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63a2\u8ba8\u5b83\u4eec\u7684\u4f18\u52a3\u548c\u9002\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528sort()<\/code>\u65b9\u6cd5<\/p>\n<\/p>\n

sort()<\/code>\u65b9\u6cd5\u662f\u5217\u8868\u5bf9\u8c61\u7684\u4e00\u4e2a\u5185\u7f6e\u65b9\u6cd5\uff0c\u7528\u4e8e\u5bf9\u5217\u8868\u8fdb\u884c\u539f\u5730\u6392\u5e8f\u3002\u5b83\u4f1a\u76f4\u63a5\u4fee\u6539\u539f\u59cb\u5217\u8868\uff0c\u4e0d\u8fd4\u56de\u65b0\u5217\u8868\u3002\u4f7f\u7528sort()<\/code>\u8fdb\u884c\u964d\u5e8f\u6392\u5217\u65f6\uff0c\u53ea\u9700\u5c06reverse<\/code>\u53c2\u6570\u8bbe\u7f6e\u4e3aTrue<\/code>\u3002<\/p>\n<\/p>\n

numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5]<\/p>\n
numbers.sort(reverse=True)<\/p>\n
print(numbers)  # \u8f93\u51fa: [9, 6, 5, 5, 5, 4, 3, 3, 2, 1, 1]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f18\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
    \n
  1. \u6548\u7387\u9ad8<\/strong>\uff1asort()<\/code>\u65b9\u6cd5\u662f\u539f\u5730\u6392\u5e8f\uff0c\u8282\u7701\u4e86\u5185\u5b58\u3002<\/li>\n
  2. \u7b80\u5355\u6613\u7528<\/strong>\uff1a\u53ea\u9700\u8bbe\u7f6e\u4e00\u4e2a\u53c2\u6570\u5373\u53ef\u5b9e\u73b0\u964d\u5e8f\u6392\u5217\u3002<\/li>\n<\/ol>\n
    \u7f3a\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
      \n
    1. \u4e0d\u53ef\u9006\u64cd\u4f5c<\/strong>\uff1a\u56e0\u4e3a\u662f\u539f\u5730\u6392\u5e8f\uff0c\u539f\u59cb\u5217\u8868\u88ab\u4fee\u6539\u3002<\/li>\n<\/ol>\n
      \u4e8c\u3001\u4f7f\u7528sorted()<\/code>\u51fd\u6570<\/p>\n<\/p>\n
      sorted()<\/code>\u51fd\u6570\u7528\u4e8e\u5bf9\u4efb\u4f55\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002\u5b83\u4e0d\u4f1a\u6539\u53d8\u539f\u59cb\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n
      numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5]<\/p>\n
      sorted_numbers = sorted(numbers, reverse=True)<\/p>\n
      print(sorted_numbers)  # \u8f93\u51fa: [9, 6, 5, 5, 5, 4, 3, 3, 2, 1, 1]<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u4f18\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
        \n
      1. \u4e0d\u4fee\u6539\u539f\u59cb\u5bf9\u8c61<\/strong>\uff1a\u751f\u6210\u65b0\u5217\u8868\uff0c\u4fdd\u7559\u4e86\u539f\u59cb\u6570\u636e\u3002<\/li>\n
      2. \u5e7f\u6cdb\u9002\u7528<\/strong>\uff1a\u53ef\u4ee5\u5bf9\u4efb\u4f55\u53ef\u8fed\u4ee3\u5bf9\u8c61\u6392\u5e8f\u3002<\/li>\n<\/ol>\n
        \u7f3a\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
          \n
        1. \u5185\u5b58\u5360\u7528<\/strong>\uff1a\u9700\u8981\u989d\u5916\u7684\u5185\u5b58\u6765\u5b58\u50a8\u65b0\u5217\u8868\u3002<\/li>\n<\/ol>\n
          \u4e09\u3001\u4f7f\u7528\u81ea\u5b9a\u4e49\u51fd\u6570\u8fdb\u884c\u6392\u5e8f<\/p>\n<\/p>\n
          Python\u7684sort()<\/code>\u548csorted()<\/code>\u90fd\u652f\u6301key<\/code>\u53c2\u6570\uff0c\u5141\u8bb8\u4f7f\u7528\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u786e\u5b9a\u6392\u5e8f\u7684\u4f9d\u636e\u3002\u8fd9\u5728\u9700\u8981\u57fa\u4e8e\u590d\u6742\u89c4\u5219\u8fdb\u884c\u6392\u5e8f\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
          students = [<\/p>\n
              {'name': 'John', 'grade': 88},<\/p>\n
              {'name': 'Jane', 'grade': 92},<\/p>\n
              {'name': 'Dave', 'grade': 85}<\/p>\n
          ]<\/p>\n
          sorted_students = sorted(students, key=lambda x: x['grade'], reverse=True)<\/p>\n
          print(sorted_students)<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u4f18\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
            \n
          1. \u7075\u6d3b\u6027\u9ad8<\/strong>\uff1a\u53ef\u4ee5\u6839\u636e\u4efb\u610f\u590d\u6742\u89c4\u5219\u8fdb\u884c\u6392\u5e8f\u3002<\/li>\n
          2. \u53ef\u8bfb\u6027\u5f3a<\/strong>\uff1a\u4ee3\u7801\u903b\u8f91\u6e05\u6670\uff0c\u6613\u4e8e\u7406\u89e3\u3002<\/li>\n<\/ol>\n
            \u7f3a\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
              \n
            1. \u6027\u80fd\u53ef\u80fd\u4e0b\u964d<\/strong>\uff1a\u81ea\u5b9a\u4e49\u51fd\u6570\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6392\u5e8f\u901f\u5ea6\u53d8\u6162\u3002<\/li>\n<\/ol>\n
              \u56db\u3001\u5728NumPy\u4e2d\u8fdb\u884c\u964d\u5e8f\u6392\u5217<\/p>\n<\/p>\n
              \u5bf9\u4e8e\u6570\u503c\u8ba1\u7b97\uff0cNumPy\u5e93\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\u529f\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528numpy.sort()<\/code>\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<\/p>\n
              import numpy as np<\/p>\n
              arr = np.array([3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5])<\/p>\n
              sorted_arr = np.sort(arr)[::-1]<\/p>\n
              print(sorted_arr)  # \u8f93\u51fa: [9 6 5 5 5 4 3 3 2 1 1]<\/p>\n
              <\/code><\/pre>\n<\/p>\n
              \u4f18\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
                \n
              1. \u6548\u7387\u9ad8<\/strong>\uff1a\u9488\u5bf9\u5927\u89c4\u6a21\u6570\u636e\u8fdb\u884c\u4f18\u5316\u3002<\/li>\n
              2. \u529f\u80fd\u4e30\u5bcc<\/strong>\uff1a\u80fd\u591f\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u3002<\/li>\n<\/ol>\n
                \u7f3a\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
                  \n
                1. \u989d\u5916\u4f9d\u8d56<\/strong>\uff1a\u9700\u8981\u5b89\u88c5NumPy\u5e93\u3002<\/li>\n<\/ol>\n
                  \u4e94\u3001\u5728Pandas\u4e2d\u5bf9\u6570\u636e\u964d\u5e8f\u6392\u5217<\/p>\n<\/p>\n
                  Pandas\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u5206\u6790\u529f\u80fd\uff0cDataFrame<\/code>\u5bf9\u8c61\u7684sort_values()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5bf9\u6570\u636e\u6309\u5217\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<\/p>\n
                  import pandas as pd<\/p>\n
                  data = {'name': ['John', 'Jane', 'Dave'], 'grade': [88, 92, 85]}<\/p>\n
                  df = pd.DataFrame(data)<\/p>\n
                  sorted_df = df.sort_values(by='grade', ascending=False)<\/p>\n
                  print(sorted_df)<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                  \u4f18\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
                    \n
                  1. \u9002\u5408\u5904\u7406\u590d\u6742\u6570\u636e<\/strong>\uff1a\u5bf9\u4e8e\u8868\u683c\u5f62\u5f0f\u7684\u6570\u636e\uff0cPandas\u975e\u5e38\u5f3a\u5927\u3002<\/li>\n
                  2. \u529f\u80fd\u5f3a\u5927<\/strong>\uff1a\u652f\u6301\u591a\u5217\u6392\u5e8f\u3001\u7f3a\u5931\u503c\u5904\u7406\u7b49\u3002<\/li>\n<\/ol>\n
                    \u7f3a\u70b9<\/strong>\uff1a  <\/p>\n<\/p>\n
                      \n
                    1. \u989d\u5916\u4f9d\u8d56<\/strong>\uff1a\u9700\u8981\u5b89\u88c5Pandas\u5e93\u3002<\/li>\n<\/ol>\n
                      \u516d\u3001\u6027\u80fd\u8003\u8651\u548c\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n
                      \u5728\u9009\u62e9\u6392\u5e8f\u65b9\u6cd5\u65f6\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u6027\u80fd\u8981\u6c42\u505a\u51fa\u5408\u9002\u7684\u9009\u62e9\u3002\u5bf9\u4e8e\u7b80\u5355\u7684\u5217\u8868\u6392\u5e8f\uff0c\u5185\u7f6e\u7684sort()<\/code>\u548csorted()<\/code>\u8db3\u591f\u9ad8\u6548\u4e14\u6613\u4e8e\u4f7f\u7528\u3002\u5bf9\u4e8e\u5927\u89c4\u6a21\u6570\u503c\u6570\u636e\uff0cNumPy\u662f\u66f4\u597d\u7684\u9009\u62e9\uff0c\u800cPandas\u5219\u9002\u5408\u4e8e\u590d\u6742\u7684\u6570\u636e\u5206\u6790\u4efb\u52a1\u3002<\/p>\n<\/p>\n
                      \u4e03\u3001\u603b\u7ed3<\/p>\n<\/p>\n
                      \u5728Python\u4e2d\u964d\u5e8f\u6392\u5217\u6570\u636e\u7684\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0c\u5177\u4f53\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u636e\u7ed3\u6784\u7684\u590d\u6742\u6027\u3001\u6027\u80fd\u8981\u6c42\u4ee5\u53ca\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002\u7406\u89e3\u6bcf\u79cd\u65b9\u6cd5\u7684\u4f18\u7f3a\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u9ad8\u6548\u89e3\u51b3\u6570\u636e\u6392\u5e8f\u95ee\u9898\u3002<\/p>\n<\/p>\n
                      \u901a\u8fc7\u4e0a\u8ff0\u5185\u5bb9\uff0c\u6211\u4eec\u8be6\u7ec6\u63a2\u8ba8\u4e86Python\u4e2d\u964d\u5e8f\u6392\u5217\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u4ece\u57fa\u672c\u7684sort()<\/code>\u548csorted()<\/code>\uff0c\u5230\u9ad8\u7ea7\u7684NumPy\u548cPandas\u5e94\u7528\uff0c\u6bcf\u79cd\u65b9\u6cd5\u5404\u6709\u5176\u9002\u7528\u573a\u666f\u548c\u7279\u70b9\u3002\u901a\u8fc7\u5408\u7406\u9009\u62e9\u548c\u7ec4\u5408\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u80fd\u591f\u5728Python\u4e2d\u9ad8\u6548\u5730\u8fdb\u884c\u6570\u636e\u6392\u5e8f\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\u5217\uff1f<\/strong>
                      \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684sort()<\/code>\u65b9\u6cd5\u548csorted()<\/code>\u51fd\u6570\u6765\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5217\u3002sort()<\/code>\u65b9\u6cd5\u4f1a\u76f4\u63a5\u4fee\u6539\u539f\u59cb\u5217\u8868\uff0c\u800csorted()<\/code>\u51fd\u6570\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002\u8981\u5b9e\u73b0\u964d\u5e8f\u6392\u5217\uff0c\u53ea\u9700\u8bbe\u7f6e\u53c2\u6570reverse=True<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n
                      my_list = [3, 1, 4, 1, 5]\nmy_list.sort(reverse=True)  # \u4fee\u6539\u539f\u5217\u8868\nprint(my_list)  # \u8f93\u51fa: [5, 4, 3, 1, 1]\n\nnew_list = sorted(my_list, reverse=True)  # \u8fd4\u56de\u65b0\u5217\u8868\nprint(new_list)  # \u8f93\u51fa: [5, 4, 3, 1, 1]\n<\/code><\/pre>\n
                      \u5982\u4f55\u5bf9\u5b57\u5178\u4e2d\u7684\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
                      \u5728Python\u4e2d\uff0c\u5982\u679c\u60f3\u8981\u5bf9\u5b57\u5178\u4e2d\u7684\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u7ed3\u5408lambda<\/code>\u8868\u8fbe\u5f0f\u3002\u901a\u8fc7\u6307\u5b9akey<\/code>\u53c2\u6570\u4e3a\u4e00\u4e2a\u51fd\u6570\uff0c\u53ef\u4ee5\u6309\u5b57\u5178\u7684\u503c\u8fdb\u884c\u6392\u5e8f\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
                      my_dict = {'a': 3, 'b': 1, 'c': 4}\nsorted_dict = dict(sorted(my_dict.items(), key=lambda item: item[1], reverse=True))\nprint(sorted_dict)  # \u8f93\u51fa: {'c': 4, 'a': 3, 'b': 1}\n<\/code><\/pre>\n
                      \u5982\u4f55\u5bf9\u81ea\u5b9a\u4e49\u5bf9\u8c61\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
                      \u5728\u5904\u7406\u81ea\u5b9a\u4e49\u5bf9\u8c61\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u6392\u5e8f\u7684\u5173\u952e\u5b57\u51fd\u6570\u6765\u5b9e\u73b0\u964d\u5e8f\u6392\u5217\u3002\u5728sorted()<\/code>\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528key<\/code>\u53c2\u6570\u6307\u5b9a\u6392\u5e8f\u4f9d\u636e\u3002\u4f8b\u5982\uff1a<\/p>\n
                      class Person:\n    def __init__(self, name, age):\n        self.name = name\n        self.age = age\n\npeople = [Person("Alice", 30), Person("Bob", 25), Person("Charlie", 35)]\nsorted_people = sorted(people, key=lambda person: person.age, reverse=True)\n\nfor person in sorted_people:\n    print(person.name, person.age)  # \u8f93\u51fa: Charlie 35, Alice 30, Bob 25\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u3002\u5176\u4e2d\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684sort()\u65b9\u6cd5\u3001sort […]","protected":false},"author":3,"featured_media":956108,"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\/956102"}],"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=956102"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956102\/revisions"}],"predecessor-version":[{"id":956109,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956102\/revisions\/956109"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/956108"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=956102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=956102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=956102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}