{"id":978089,"date":"2024-12-27T06:34:53","date_gmt":"2024-12-26T22:34:53","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/978089.html"},"modified":"2024-12-27T06:34:55","modified_gmt":"2024-12-26T22:34:55","slug":"python%e5%a6%82%e4%bd%95%e5%88%a0%e9%99%a4%e4%b9%8b%e5%89%8d%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/978089.html","title":{"rendered":"python\u5982\u4f55\u5220\u9664\u4e4b\u524d\u7684"},"content":{"rendered":"

\"python\u5982\u4f55\u5220\u9664\u4e4b\u524d\u7684\"<\/p>\n

\u5728Python\u4e2d\u5220\u9664\u4e4b\u524d\u7684\u64cd\u4f5c\u4e3b\u8981\u901a\u8fc7\u5217\u8868\u548c\u6587\u4ef6\u64cd\u4f5c\u6765\u5b9e\u73b0\uff0c\u5177\u4f53\u5305\u62ec\u4f7f\u7528\u5207\u7247\u3001\u5217\u8868\u65b9\u6cd5\u4ee5\u53ca\u6587\u4ef6\u7684\u8bfb\u5199\u7b49\u65b9\u5f0f\u3002\u5207\u7247\u53ef\u4ee5\u9ad8\u6548\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3001\u5217\u8868\u65b9\u6cd5\u5982remove\u548cpop\u53ef\u4ee5\u5220\u9664\u6307\u5b9a\u5143\u7d20\u6216\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\u3001\u6587\u4ef6\u64cd\u4f5c\u5219\u53ef\u4ee5\u5220\u9664\u6216\u4fee\u6539\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u3002<\/strong> \u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5217\u8868\u64cd\u4f5c<\/p>\n<\/p>\n

    \n
  1. \u5207\u7247\u64cd\u4f5c<\/li>\n<\/ol>\n

    \u5728Python\u4e2d\uff0c\u5217\u8868\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u901a\u8fc7\u5207\u7247\u64cd\u4f5c\u6765\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u5207\u7247\u64cd\u4f5c\u5141\u8bb8\u6211\u4eec\u9009\u62e9\u5217\u8868\u4e2d\u7684\u4e00\u90e8\u5206\u5143\u7d20\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n

    # \u793a\u4f8b\uff1a\u901a\u8fc7\u5207\u7247\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/p>\n
    my_list = [1, 2, 3, 4, 5]<\/p>\n
    \u5220\u9664\u7d22\u5f15\u4ece0\u52302\u7684\u5143\u7d20<\/strong><\/h2>\n
    new_list = my_list[3:]<\/p>\n
    print(new_list)  # \u8f93\u51fa\uff1a[4, 5]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u5220\u9664\u5217\u8868\u4e2d\u7684\u4e00\u90e8\u5206\u5143\u7d20\u3002<\/p>\n<\/p>\n
      \n
    1. \u5217\u8868\u65b9\u6cd5<\/li>\n<\/ol>\n
      Python\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5185\u7f6e\u7684\u65b9\u6cd5\u7528\u4e8e\u64cd\u4f5c\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
        \n
      • remove()<\/code> \u65b9\u6cd5<\/li>\n<\/ul>\n
        remove()<\/code> \u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u5217\u8868\u4e2d\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
        # \u793a\u4f8b\uff1a\u4f7f\u7528remove\u65b9\u6cd5\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/p>\n
        my_list = [1, 2, 3, 2, 4]<\/p>\n
        my_list.remove(2)<\/p>\n
        print(my_list)  # \u8f93\u51fa\uff1a[1, 3, 2, 4]<\/p>\n
        <\/code><\/pre>\n<\/p>\n
          \n
        • pop()<\/code> \u65b9\u6cd5<\/li>\n<\/ul>\n
          pop()<\/code> \u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u5217\u8868\u4e2d\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u8be5\u5143\u7d20\u3002<\/p>\n<\/p>\n
          # \u793a\u4f8b\uff1a\u4f7f\u7528pop\u65b9\u6cd5\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/p>\n
          my_list = [1, 2, 3, 4, 5]<\/p>\n
          removed_element = my_list.pop(2)<\/p>\n
          print(my_list)  # \u8f93\u51fa\uff1a[1, 2, 4, 5]<\/p>\n
          print(removed_element)  # \u8f93\u51fa\uff1a3<\/p>\n
          <\/code><\/pre>\n<\/p>\n
            \n
          1. \u5217\u8868\u63a8\u5bfc\u5f0f<\/li>\n<\/ol>\n
            \u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u8bed\u6cd5\uff0c\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u65b0\u7684\u5217\u8868\u3002\u5728\u5220\u9664\u5143\u7d20\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u8fc7\u6ee4\u6389\u4e0d\u9700\u8981\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
            # \u793a\u4f8b\uff1a\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u5220\u9664\u7279\u5b9a\u5143\u7d20<\/p>\n
            my_list = [1, 2, 3, 4, 5]<\/p>\n
            filtered_list = [x for x in my_list if x != 3]<\/p>\n
            print(filtered_list)  # \u8f93\u51fa\uff1a[1, 2, 4, 5]<\/p>\n
            <\/code><\/pre>\n<\/p>\n
            \u4e8c\u3001\u6587\u4ef6\u64cd\u4f5c<\/p>\n<\/p>\n
              \n
            1. \u9010\u884c\u8bfb\u53d6\u5e76\u5199\u5165\u65b0\u6587\u4ef6<\/li>\n<\/ol>\n
              \u5728\u5904\u7406\u6587\u4ef6\u65f6\uff0c\u6709\u65f6\u9700\u8981\u5220\u9664\u6587\u4ef6\u4e2d\u7684\u67d0\u4e9b\u884c\u6216\u5185\u5bb9\u3002\u53ef\u4ee5\u901a\u8fc7\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5e76\u5c06\u9700\u8981\u4fdd\u7559\u7684\u5185\u5bb9\u5199\u5165\u65b0\u6587\u4ef6\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
              # \u793a\u4f8b\uff1a\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5e76\u5199\u5165\u65b0\u6587\u4ef6<\/p>\n
              with open('input.txt', 'r') as infile, open('output.txt', 'w') as outfile:<\/p>\n
                  for line in infile:<\/p>\n
                      if 'delete this line' not in line:<\/p>\n
                          outfile.write(line)<\/p>\n
              <\/code><\/pre>\n<\/p>\n
                \n
              1. \u4f7f\u7528\u6587\u4ef6\u6307\u9488<\/li>\n<\/ol>\n
                \u5f53\u9700\u8981\u5220\u9664\u6587\u4ef6\u4e2d\u7684\u7279\u5b9a\u90e8\u5206\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u6587\u4ef6\u6307\u9488\u6765\u5b9a\u4f4d\u548c\u5220\u9664\u3002<\/p>\n<\/p>\n
                # \u793a\u4f8b\uff1a\u4f7f\u7528\u6587\u4ef6\u6307\u9488\u5220\u9664\u6587\u4ef6\u4e2d\u7684\u7279\u5b9a\u5185\u5bb9<\/p>\n
                with open('data.txt', 'r+') as file:<\/p>\n
                    lines = file.readlines()<\/p>\n
                    file.seek(0)<\/p>\n
                    for line in lines:<\/p>\n
                        if not line.startswith('DELETE'):<\/p>\n
                            file.write(line)<\/p>\n
                    file.truncate()<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                \u4e09\u3001\u5b57\u5178\u64cd\u4f5c<\/p>\n<\/p>\n
                \u5728Python\u4e2d\uff0c\u5b57\u5178\u662f\u4e00\u79cd\u952e\u503c\u5bf9\u7684\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u901a\u8fc7\u952e\u6765\u5220\u9664\u5143\u7d20\u3002<\/p>\n<\/p>\n
                  \n
                1. \u4f7f\u7528 del<\/code> \u5173\u952e\u5b57<\/li>\n<\/ol>\n
                  del<\/code> \u5173\u952e\u5b57\u7528\u4e8e\u5220\u9664\u5b57\u5178\u4e2d\u6307\u5b9a\u952e\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
                  # \u793a\u4f8b\uff1a\u4f7f\u7528del\u5173\u952e\u5b57\u5220\u9664\u5b57\u5178\u4e2d\u7684\u5143\u7d20<\/p>\n
                  my_dict = {'a': 1, 'b': 2, 'c': 3}<\/p>\n
                  del my_dict['b']<\/p>\n
                  print(my_dict)  # \u8f93\u51fa\uff1a{'a': 1, 'c': 3}<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                    \n
                  1. \u4f7f\u7528 pop()<\/code> \u65b9\u6cd5<\/li>\n<\/ol>\n
                    pop()<\/code> \u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u5b57\u5178\u4e2d\u6307\u5b9a\u952e\u7684\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u8be5\u5143\u7d20\u7684\u503c\u3002<\/p>\n<\/p>\n
                    # \u793a\u4f8b\uff1a\u4f7f\u7528pop\u65b9\u6cd5\u5220\u9664\u5b57\u5178\u4e2d\u7684\u5143\u7d20<\/p>\n
                    my_dict = {'a': 1, 'b': 2, 'c': 3}<\/p>\n
                    removed_value = my_dict.pop('b')<\/p>\n
                    print(my_dict)  # \u8f93\u51fa\uff1a{'a': 1, 'c': 3}<\/p>\n
                    print(removed_value)  # \u8f93\u51fa\uff1a2<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                    \u56db\u3001\u96c6\u5408\u64cd\u4f5c<\/p>\n<\/p>\n
                    \u96c6\u5408\u662f\u4e00\u79cd\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u7684\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002<\/p>\n<\/p>\n
                      \n
                    1. \u4f7f\u7528 remove()<\/code> \u65b9\u6cd5<\/li>\n<\/ol>\n
                      remove()<\/code> \u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u96c6\u5408\u4e2d\u7684\u6307\u5b9a\u5143\u7d20\u3002<\/p>\n<\/p>\n
                      # \u793a\u4f8b\uff1a\u4f7f\u7528remove\u65b9\u6cd5\u5220\u9664\u96c6\u5408\u4e2d\u7684\u5143\u7d20<\/p>\n
                      my_set = {1, 2, 3, 4, 5}<\/p>\n
                      my_set.remove(3)<\/p>\n
                      print(my_set)  # \u8f93\u51fa\uff1a{1, 2, 4, 5}<\/p>\n
                      <\/code><\/pre>\n<\/p>\n
                        \n
                      1. \u4f7f\u7528 discard()<\/code> \u65b9\u6cd5<\/li>\n<\/ol>\n
                        discard()<\/code> \u65b9\u6cd5\u4e5f\u7528\u4e8e\u5220\u9664\u96c6\u5408\u4e2d\u7684\u6307\u5b9a\u5143\u7d20\uff0c\u4f46\u5982\u679c\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u4e0d\u4f1a\u5f15\u53d1\u9519\u8bef\u3002<\/p>\n<\/p>\n
                        # \u793a\u4f8b\uff1a\u4f7f\u7528discard\u65b9\u6cd5\u5220\u9664\u96c6\u5408\u4e2d\u7684\u5143\u7d20<\/p>\n
                        my_set = {1, 2, 3, 4, 5}<\/p>\n
                        my_set.discard(6)  # \u4e0d\u4f1a\u5f15\u53d1\u9519\u8bef<\/p>\n
                        print(my_set)  # \u8f93\u51fa\uff1a{1, 2, 3, 4, 5}<\/p>\n
                        <\/code><\/pre>\n<\/p>\n
                        \u4e94\u3001\u603b\u7ed3<\/p>\n<\/p>\n
                        \u5728Python\u4e2d\uff0c\u5220\u9664\u6570\u636e\u7684\u64cd\u4f5c\u662f\u975e\u5e38\u5e38\u89c1\u7684\uff0c\u65e0\u8bba\u662f\u4ece\u5217\u8868\u3001\u5b57\u5178\u3001\u96c6\u5408\u8fd8\u662f\u6587\u4ef6\u4e2d\u5220\u9664\u5143\u7d20\uff0c\u90fd\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u9009\u62e9\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u9700\u6c42\u548c\u6570\u636e\u7c7b\u578b\u3002\u540c\u65f6\uff0c\u4e86\u89e3\u548c\u638c\u63e1\u8fd9\u4e9b\u64cd\u4f5c\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
                        \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                         \u5982\u4f55\u5728Python\u4e2d\u5220\u9664\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\uff1f<\/strong>
                        \u5728Python\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528remove()<\/code>\u65b9\u6cd5\u5220\u9664\u5217\u8868\u4e2d\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5143\u7d20\u3002\u5982\u679c\u60a8\u60f3\u5220\u9664\u6240\u6709\u5339\u914d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6216filter()<\/code>\u51fd\u6570\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
                        my_list = [1, 2, 3, 2, 4]\nmy_list.remove(2)  # \u5220\u9664\u7b2c\u4e00\u4e2a2\nnew_list = [x for x in my_list if x != 2]  # \u5220\u9664\u6240\u67092\n<\/code><\/pre>\n
                        Python\u662f\u5426\u652f\u6301\u5220\u9664\u5b57\u5178\u4e2d\u7684\u952e\uff1f<\/strong>
                        \u662f\u7684\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528del<\/code>\u5173\u952e\u5b57\u6216pop()<\/code>\u65b9\u6cd5\u4ece\u5b57\u5178\u4e2d\u5220\u9664\u7279\u5b9a\u7684\u952e\u3002\u4f8b\u5982\uff1a  <\/p>\n
                        my_dict = {'a': 1, 'b': 2}\ndel my_dict['a']  # \u4f7f\u7528del\u5220\u9664\u952e'a'\nvalue = my_dict.pop('b')  # \u4f7f\u7528pop\u5220\u9664\u952e'b'\u5e76\u8fd4\u56de\u5176\u503c\n<\/code><\/pre>\n
                        \u5728Python\u4e2d\u5982\u4f55\u6e05\u7a7a\u4e00\u4e2a\u96c6\u5408\uff1f<\/strong>
                        \u5982\u679c\u60a8\u60f3\u6e05\u7a7a\u4e00\u4e2a\u96c6\u5408\uff0c\u53ef\u4ee5\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u3002\u8fd9\u5c06\u79fb\u9664\u96c6\u5408\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800c\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u96c6\u5408\u3002\u4ee3\u7801\u793a\u4f8b\u4e3a\uff1a  <\/p>\n
                        my_set = {1, 2, 3}\nmy_set.clear()  # \u6e05\u7a7a\u96c6\u5408\n<\/code><\/pre>\n
                        \u8fd9\u4e9b\u65b9\u6cd5\u4f7f\u5f97\u5728Python\u4e2d\u5220\u9664\u4e0d\u9700\u8981\u7684\u5143\u7d20\u53d8\u5f97\u7b80\u5355\u9ad8\u6548\u3002\u901a\u8fc7\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u64cd\u4f5c\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u7ba1\u7406\u6570\u636e\u7ed3\u6784\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5220\u9664\u4e4b\u524d\u7684\u64cd\u4f5c\u4e3b\u8981\u901a\u8fc7\u5217\u8868\u548c\u6587\u4ef6\u64cd\u4f5c\u6765\u5b9e\u73b0\uff0c\u5177\u4f53\u5305\u62ec\u4f7f\u7528\u5207\u7247\u3001\u5217\u8868\u65b9\u6cd5\u4ee5\u53ca\u6587\u4ef6\u7684\u8bfb\u5199\u7b49\u65b9\u5f0f\u3002\u5207 […]","protected":false},"author":3,"featured_media":978092,"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\/978089"}],"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=978089"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/978089\/revisions"}],"predecessor-version":[{"id":978093,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/978089\/revisions\/978093"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/978092"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=978089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=978089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=978089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}