{"id":1066143,"date":"2024-12-31T16:23:35","date_gmt":"2024-12-31T08:23:35","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1066143.html"},"modified":"2024-12-31T16:23:38","modified_gmt":"2024-12-31T08:23:38","slug":"python%e5%a6%82%e4%bd%95%e7%94%a8len%e5%87%bd%e6%95%b0%e8%bf%94%e5%9b%9e%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1066143.html","title":{"rendered":"python\u5982\u4f55\u7528len\u51fd\u6570\u8fd4\u56de\u503c"},"content":{"rendered":"

\"python\u5982\u4f55\u7528len\u51fd\u6570\u8fd4\u56de\u503c\"<\/p>\n

\u5728 Python \u4e2d\uff0clen() \u51fd\u6570\u7528\u4e8e\u8fd4\u56de\u5bf9\u8c61\u7684\u957f\u5ea6\uff08\u5373\u9879\u76ee\u6570\uff09\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u5143\u7ec4\u3001\u96c6\u5408\u548c\u5b57\u5178\u3002\u8981\u4f7f\u7528 len() \u51fd\u6570\uff0c\u4f60\u53ea\u9700\u5c06\u76ee\u6807\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len() \u51fd\u6570\u3002\u5173\u952e\u6b65\u9aa4\u5305\u62ec\uff1a\u5bfc\u5165\u6570\u636e\u3001\u8c03\u7528 len() \u51fd\u6570\u3001\u5904\u7406\u8fd4\u56de\u503c<\/strong>\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u901a\u8fc7 len() \u51fd\u6570\u8fd4\u56de\u5176\u5b57\u7b26\u6570\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/p>\n<\/p>\n

\u4e00\u3001\u5b57\u7b26\u4e32\uff1a<\/strong><\/p>\n

\u5b57\u7b26\u4e32\u5728 Python \u4e2d\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u5e8f\u5217\uff0c\u53ef\u4ee5\u5305\u542b\u6570\u5b57\u3001\u5b57\u6bcd\u3001\u7b26\u53f7\u7b49\u3002\u8981\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n

my_string = "Hello, World!"<\/p>\n
length_of_string = len(my_string)<\/p>\n
print(length_of_string)  # \u8f93\u51fa\uff1a13<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5b57\u7b26\u4e32 "Hello, World!" \u7684\u957f\u5ea6\uff0c\u5373 13\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5217\u8868\uff1a<\/strong><\/p>\n
\u5217\u8868\u662f\u4e00\u79cd\u53ef\u53d8\u7684\u5e8f\u5217\u7c7b\u578b\uff0c\u53ef\u4ee5\u5305\u542b\u4e0d\u540c\u7c7b\u578b\u7684\u5143\u7d20\u3002\u8981\u83b7\u53d6\u5217\u8868\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length_of_list = len(my_list)<\/p>\n
print(length_of_list)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5217\u8868 [1, 2, 3, 4, 5] \u7684\u957f\u5ea6\uff0c\u5373 5\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5143\u7ec4\uff1a<\/strong><\/p>\n
\u5143\u7ec4\u662f\u4e00\u79cd\u4e0d\u53ef\u53d8\u7684\u5e8f\u5217\u7c7b\u578b\uff0c\u7c7b\u4f3c\u4e8e\u5217\u8868\u3002\u8981\u83b7\u53d6\u5143\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
my_tuple = (1, 2, 3, 4, 5)<\/p>\n
length_of_tuple = len(my_tuple)<\/p>\n
print(length_of_tuple)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5143\u7ec4 (1, 2, 3, 4, 5) \u7684\u957f\u5ea6\uff0c\u5373 5\u3002<\/p>\n<\/p>\n
\u56db\u3001\u96c6\u5408\uff1a<\/strong><\/p>\n
\u96c6\u5408\u662f\u4e00\u79cd\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u7684\u5e8f\u5217\u7c7b\u578b\u3002\u8981\u83b7\u53d6\u96c6\u5408\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
my_set = {1, 2, 3, 4, 5}<\/p>\n
length_of_set = len(my_set)<\/p>\n
print(length_of_set)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u96c6\u5408 {1, 2, 3, 4, 5} \u7684\u957f\u5ea6\uff0c\u5373 5\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5b57\u5178\uff1a<\/strong><\/p>\n
\u5b57\u5178\u662f\u4e00\u79cd\u952e\u503c\u5bf9\u7684\u96c6\u5408\u3002\u8981\u83b7\u53d6\u5b57\u5178\u7684\u957f\u5ea6\uff0c\u5373\u952e\u503c\u5bf9\u7684\u6570\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
my_dict = {'a': 1, 'b': 2, 'c': 3}<\/p>\n
length_of_dict = len(my_dict)<\/p>\n
print(length_of_dict)  # \u8f93\u51fa\uff1a3<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5b57\u5178 {'a': 1, 'b': 2, 'c': 3} \u7684\u957f\u5ea6\uff0c\u5373 3\u3002<\/p>\n<\/p>\n
I\u3001\u5b57\u7b26\u4e32\uff1a\u8be6\u7ec6\u63cf\u8ff0<\/strong><\/h3>\n<\/p>\n
\u5b57\u7b26\u4e32\u5728 Python \u4e2d\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u5e8f\u5217\uff0c\u53ef\u4ee5\u5305\u542b\u6570\u5b57\u3001\u5b57\u6bcd\u3001\u7b26\u53f7\u7b49\u3002\u8981\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f7f\u7528 len() \u51fd\u6570\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
    \n
  1. \u5b9a\u4e49\u5b57\u7b26\u4e32\u53d8\u91cf<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u53d8\u91cf\u5e76\u8d4b\u503c\u3002<\/li>\n
  2. \u8c03\u7528 len() \u51fd\u6570<\/strong>\uff1a\u5c06\u5b57\u7b26\u4e32\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len() \u51fd\u6570\u3002<\/li>\n
  3. \u5904\u7406\u8fd4\u56de\u503c<\/strong>\uff1alen() \u51fd\u6570\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\u6216\u76f4\u63a5\u8f93\u51fa\u3002<\/li>\n<\/ol>\n
    \u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
    my_string = "Hello, World!"<\/p>\n
    length_of_string = len(my_string)<\/p>\n
    print(length_of_string)  # \u8f93\u51fa\uff1a13<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5b57\u7b26\u4e32 "Hello, World!" \u7684\u957f\u5ea6\uff0c\u5373 13\u3002<\/p>\n<\/p>\n
    \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0clen() \u51fd\u6570\u4e0d\u4f1a\u5ffd\u7565\u5b57\u7b26\u4e32\u4e2d\u7684\u7a7a\u683c\u548c\u6807\u70b9\u7b26\u53f7\uff0c\u5b83\u4eec\u90fd\u88ab\u8ba1\u7b97\u5728\u5185\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
    my_string = "Python is awesome!"<\/p>\n
    length_of_string = len(my_string)<\/p>\n
    print(length_of_string)  # \u8f93\u51fa\uff1a18<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5b57\u7b26\u4e32 "Python is awesome!" \u5305\u542b 18 \u4e2a\u5b57\u7b26\uff0c\u5176\u4e2d\u5305\u62ec\u7a7a\u683c\u548c\u611f\u53f9\u53f7\u3002<\/p>\n<\/p>\n
    \u5b57\u7b26\u4e32\u64cd\u4f5c\u7684\u5e94\u7528<\/strong>\uff1a<\/p>\n
    \u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u5728\u5f88\u591a\u573a\u666f\u4e0b\u90fd\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
      \n
    • \u8f93\u5165\u9a8c\u8bc1<\/strong>\uff1a\u68c0\u67e5\u7528\u6237\u8f93\u5165\u7684\u957f\u5ea6\u662f\u5426\u7b26\u5408\u8981\u6c42\u3002<\/li>\n
    • \u6587\u672c\u5904\u7406<\/strong>\uff1a\u5728\u5904\u7406\u6587\u672c\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n
    • \u6570\u636e\u5206\u6790<\/strong>\uff1a\u5728\u5206\u6790\u6587\u672c\u6570\u636e\u65f6\uff0c\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u53ef\u80fd\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6307\u6807\u3002<\/li>\n<\/ul>\n
      II\u3001\u5217\u8868\uff1a\u8be6\u7ec6\u63cf\u8ff0<\/strong><\/h3>\n<\/p>\n
      \u5217\u8868\u662f\u4e00\u79cd\u53ef\u53d8\u7684\u5e8f\u5217\u7c7b\u578b\uff0c\u53ef\u4ee5\u5305\u542b\u4e0d\u540c\u7c7b\u578b\u7684\u5143\u7d20\u3002\u8981\u83b7\u53d6\u5217\u8868\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f7f\u7528 len() \u51fd\u6570\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
        \n
      1. \u5b9a\u4e49\u5217\u8868\u53d8\u91cf<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u5217\u8868\u53d8\u91cf\u5e76\u8d4b\u503c\u3002<\/li>\n
      2. \u8c03\u7528 len() \u51fd\u6570<\/strong>\uff1a\u5c06\u5217\u8868\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len() \u51fd\u6570\u3002<\/li>\n
      3. \u5904\u7406\u8fd4\u56de\u503c<\/strong>\uff1alen() \u51fd\u6570\u8fd4\u56de\u5217\u8868\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\u6216\u76f4\u63a5\u8f93\u51fa\u3002<\/li>\n<\/ol>\n
        \u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
        my_list = [1, 2, 3, 4, 5]<\/p>\n
        length_of_list = len(my_list)<\/p>\n
        print(length_of_list)  # \u8f93\u51fa\uff1a5<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5217\u8868 [1, 2, 3, 4, 5] \u7684\u957f\u5ea6\uff0c\u5373 5\u3002<\/p>\n<\/p>\n
        \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5217\u8868\u53ef\u4ee5\u5305\u542b\u4e0d\u540c\u7c7b\u578b\u7684\u5143\u7d20\uff0clen() \u51fd\u6570\u4ec5\u8ba1\u7b97\u5217\u8868\u4e2d\u7684\u5143\u7d20\u6570\u91cf\uff0c\u800c\u4e0d\u8003\u8651\u5b83\u4eec\u7684\u7c7b\u578b\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
        my_list = [1, "Hello", 3.14, True]<\/p>\n
        length_of_list = len(my_list)<\/p>\n
        print(length_of_list)  # \u8f93\u51fa\uff1a4<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5217\u8868 [1, "Hello", 3.14, True] \u5305\u542b 4 \u4e2a\u5143\u7d20\uff0clen() \u51fd\u6570\u8fd4\u56de 4\u3002<\/p>\n<\/p>\n
        \u5217\u8868\u64cd\u4f5c\u7684\u5e94\u7528<\/strong>\uff1a<\/p>\n
        \u5217\u8868\u7684\u957f\u5ea6\u5728\u5f88\u591a\u573a\u666f\u4e0b\u90fd\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
          \n
        • \u6570\u636e\u5904\u7406<\/strong>\uff1a\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u9700\u8981\u77e5\u9053\u5217\u8868\u7684\u957f\u5ea6\uff0c\u4ee5\u4fbf\u8fdb\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002<\/li>\n
        • \u8fed\u4ee3\u64cd\u4f5c<\/strong>\uff1a\u5728\u904d\u5386\u5217\u8868\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u5217\u8868\u7684\u957f\u5ea6\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n
        • \u52a8\u6001\u8c03\u6574<\/strong>\uff1a\u5728\u52a8\u6001\u6dfb\u52a0\u6216\u5220\u9664\u5217\u8868\u5143\u7d20\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u68c0\u67e5\u5217\u8868\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n
          III\u3001\u5143\u7ec4\uff1a\u8be6\u7ec6\u63cf\u8ff0<\/strong><\/h3>\n<\/p>\n
          \u5143\u7ec4\u662f\u4e00\u79cd\u4e0d\u53ef\u53d8\u7684\u5e8f\u5217\u7c7b\u578b\uff0c\u7c7b\u4f3c\u4e8e\u5217\u8868\u3002\u8981\u83b7\u53d6\u5143\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f7f\u7528 len() \u51fd\u6570\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
            \n
          1. \u5b9a\u4e49\u5143\u7ec4\u53d8\u91cf<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u5143\u7ec4\u53d8\u91cf\u5e76\u8d4b\u503c\u3002<\/li>\n
          2. \u8c03\u7528 len() \u51fd\u6570<\/strong>\uff1a\u5c06\u5143\u7ec4\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len() \u51fd\u6570\u3002<\/li>\n
          3. \u5904\u7406\u8fd4\u56de\u503c<\/strong>\uff1alen() \u51fd\u6570\u8fd4\u56de\u5143\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\u6216\u76f4\u63a5\u8f93\u51fa\u3002<\/li>\n<\/ol>\n
            \u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
            my_tuple = (1, 2, 3, 4, 5)<\/p>\n
            length_of_tuple = len(my_tuple)<\/p>\n
            print(length_of_tuple)  # \u8f93\u51fa\uff1a5<\/p>\n
            <\/code><\/pre>\n<\/p>\n
            \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5143\u7ec4 (1, 2, 3, 4, 5) \u7684\u957f\u5ea6\uff0c\u5373 5\u3002<\/p>\n<\/p>\n
            \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5143\u7ec4\u4e00\u65e6\u521b\u5efa\uff0c\u5176\u957f\u5ea6\u662f\u4e0d\u53ef\u53d8\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
            my_tuple = (1, 2, 3)<\/p>\n
            length_of_tuple = len(my_tuple)<\/p>\n
            print(length_of_tuple)  # \u8f93\u51fa\uff1a3<\/p>\n
            \u5c1d\u8bd5\u4fee\u6539\u5143\u7ec4\u7684\u957f\u5ea6\uff08\u4f1a\u62a5\u9519\uff09<\/strong><\/h2>\n
            my_tuple[0] = 10<\/strong><\/h2>\n
            <\/code><\/pre>\n<\/p>\n
            \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5143\u7ec4 (1, 2, 3) \u7684\u957f\u5ea6\u4e3a 3\uff0c\u4e14\u65e0\u6cd5\u4fee\u6539\u5176\u957f\u5ea6\u3002<\/p>\n<\/p>\n
            \u5143\u7ec4\u64cd\u4f5c\u7684\u5e94\u7528<\/strong>\uff1a<\/p>\n
            \u5143\u7ec4\u7684\u957f\u5ea6\u5728\u5f88\u591a\u573a\u666f\u4e0b\u90fd\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
              \n
            • \u6570\u636e\u5b58\u50a8<\/strong>\uff1a\u5728\u9700\u8981\u5b58\u50a8\u4e0d\u53ef\u53d8\u7684\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5143\u7ec4\uff0c\u5e76\u6839\u636e\u5143\u7ec4\u7684\u957f\u5ea6\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n
            • \u6570\u636e\u4f20\u9012<\/strong>\uff1a\u5728\u51fd\u6570\u8c03\u7528\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5143\u7ec4\u4f20\u9012\u591a\u4e2a\u53c2\u6570\uff0c\u5e76\u6839\u636e\u5143\u7ec4\u7684\u957f\u5ea6\u8fdb\u884c\u5904\u7406\u3002<\/li>\n
            • \u6027\u80fd\u4f18\u5316<\/strong>\uff1a\u5143\u7ec4\u7684\u4e0d\u53ef\u53d8\u6027\u4f7f\u5176\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\u7684\u6027\u80fd\u4f18\u4e8e\u5217\u8868\u3002<\/li>\n<\/ul>\n
              IV\u3001\u96c6\u5408\uff1a\u8be6\u7ec6\u63cf\u8ff0<\/strong><\/h3>\n<\/p>\n
              \u96c6\u5408\u662f\u4e00\u79cd\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u7684\u5e8f\u5217\u7c7b\u578b\u3002\u8981\u83b7\u53d6\u96c6\u5408\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f7f\u7528 len() \u51fd\u6570\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
                \n
              1. \u5b9a\u4e49\u96c6\u5408\u53d8\u91cf<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u96c6\u5408\u53d8\u91cf\u5e76\u8d4b\u503c\u3002<\/li>\n
              2. \u8c03\u7528 len() \u51fd\u6570<\/strong>\uff1a\u5c06\u96c6\u5408\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len() \u51fd\u6570\u3002<\/li>\n
              3. \u5904\u7406\u8fd4\u56de\u503c<\/strong>\uff1alen() \u51fd\u6570\u8fd4\u56de\u96c6\u5408\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\u6216\u76f4\u63a5\u8f93\u51fa\u3002<\/li>\n<\/ol>\n
                \u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
                my_set = {1, 2, 3, 4, 5}<\/p>\n
                length_of_set = len(my_set)<\/p>\n
                print(length_of_set)  # \u8f93\u51fa\uff1a5<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u96c6\u5408 {1, 2, 3, 4, 5} \u7684\u957f\u5ea6\uff0c\u5373 5\u3002<\/p>\n<\/p>\n
                \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u662f\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                my_set = {1, 2, 2, 3, 3, 3}<\/p>\n
                length_of_set = len(my_set)<\/p>\n
                print(length_of_set)  # \u8f93\u51fa\uff1a3<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u96c6\u5408 {1, 2, 2, 3, 3, 3} \u4e2d\u7684\u91cd\u590d\u5143\u7d20\u88ab\u81ea\u52a8\u53bb\u91cd\uff0clen() \u51fd\u6570\u8fd4\u56de 3\u3002<\/p>\n<\/p>\n
                \u96c6\u5408\u64cd\u4f5c\u7684\u5e94\u7528<\/strong>\uff1a<\/p>\n
                \u96c6\u5408\u7684\u957f\u5ea6\u5728\u5f88\u591a\u573a\u666f\u4e0b\u90fd\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                  \n
                • \u6570\u636e\u53bb\u91cd<\/strong>\uff1a\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u96c6\u5408\u53bb\u91cd\uff0c\u5e76\u6839\u636e\u96c6\u5408\u7684\u957f\u5ea6\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n
                • \u96c6\u5408\u8fd0\u7b97<\/strong>\uff1a\u5728\u8fdb\u884c\u96c6\u5408\u4ea4\u96c6\u3001\u5e76\u96c6\u3001\u5dee\u96c6\u7b49\u8fd0\u7b97\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u96c6\u5408\u7684\u957f\u5ea6\u8fdb\u884c\u5904\u7406\u3002<\/li>\n
                • \u6027\u80fd\u4f18\u5316<\/strong>\uff1a\u96c6\u5408\u7684\u65e0\u5e8f\u6027\u548c\u53bb\u91cd\u7279\u6027\u4f7f\u5176\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\u7684\u6027\u80fd\u4f18\u4e8e\u5217\u8868\u3002<\/li>\n<\/ul>\n
                  V\u3001\u5b57\u5178\uff1a\u8be6\u7ec6\u63cf\u8ff0<\/strong><\/h3>\n<\/p>\n
                  \u5b57\u5178\u662f\u4e00\u79cd\u952e\u503c\u5bf9\u7684\u96c6\u5408\u3002\u8981\u83b7\u53d6\u5b57\u5178\u7684\u957f\u5ea6\uff0c\u5373\u952e\u503c\u5bf9\u7684\u6570\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528 len() \u51fd\u6570\u3002\u4f7f\u7528 len() \u51fd\u6570\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
                    \n
                  1. \u5b9a\u4e49\u5b57\u5178\u53d8\u91cf<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\u53d8\u91cf\u5e76\u8d4b\u503c\u3002<\/li>\n
                  2. \u8c03\u7528 len() \u51fd\u6570<\/strong>\uff1a\u5c06\u5b57\u5178\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len() \u51fd\u6570\u3002<\/li>\n
                  3. \u5904\u7406\u8fd4\u56de\u503c<\/strong>\uff1alen() \u51fd\u6570\u8fd4\u56de\u5b57\u5178\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\u6216\u76f4\u63a5\u8f93\u51fa\u3002<\/li>\n<\/ol>\n
                    \u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
                    my_dict = {'a': 1, 'b': 2, 'c': 3}<\/p>\n
                    length_of_dict = len(my_dict)<\/p>\n
                    print(length_of_dict)  # \u8f93\u51fa\uff1a3<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen() \u51fd\u6570\u8fd4\u56de\u5b57\u5178 {'a': 1, 'b': 2, 'c': 3} \u7684\u957f\u5ea6\uff0c\u5373 3\u3002<\/p>\n<\/p>\n
                    \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5b57\u5178\u7684\u957f\u5ea6\u662f\u5176\u952e\u503c\u5bf9\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                    my_dict = {'name': 'Alice', 'age': 25, 'city': 'New York'}<\/p>\n
                    length_of_dict = len(my_dict)<\/p>\n
                    print(length_of_dict)  # \u8f93\u51fa\uff1a3<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5b57\u5178 {'name': 'Alice', 'age': 25, 'city': 'New York'} \u5305\u542b 3 \u4e2a\u952e\u503c\u5bf9\uff0clen() \u51fd\u6570\u8fd4\u56de 3\u3002<\/p>\n<\/p>\n
                    \u5b57\u5178\u64cd\u4f5c\u7684\u5e94\u7528<\/strong>\uff1a<\/p>\n
                    \u5b57\u5178\u7684\u957f\u5ea6\u5728\u5f88\u591a\u573a\u666f\u4e0b\u90fd\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                      \n
                    • \u6570\u636e\u5b58\u50a8<\/strong>\uff1a\u5728\u9700\u8981\u5b58\u50a8\u952e\u503c\u5bf9\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u5178\uff0c\u5e76\u6839\u636e\u5b57\u5178\u7684\u957f\u5ea6\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n
                    • \u6570\u636e\u67e5\u8be2<\/strong>\uff1a\u5728\u67e5\u8be2\u5b57\u5178\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u5b57\u5178\u7684\u957f\u5ea6\u8fdb\u884c\u5904\u7406\u3002<\/li>\n
                    • \u52a8\u6001\u8c03\u6574<\/strong>\uff1a\u5728\u52a8\u6001\u6dfb\u52a0\u6216\u5220\u9664\u5b57\u5178\u952e\u503c\u5bf9\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u68c0\u67e5\u5b57\u5178\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n
                      \u603b\u7ed3<\/strong><\/h3>\n<\/p>\n
                      \u901a\u8fc7\u672c\u6587\u7684\u8be6\u7ec6\u63cf\u8ff0\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u5982\u4f55\u4f7f\u7528 len() \u51fd\u6570\u6765\u83b7\u53d6\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u5143\u7ec4\u3001\u96c6\u5408\u548c\u5b57\u5178\u7684\u957f\u5ea6\u3002len() \u51fd\u6570\u662f Python \u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u4e14\u5e38\u7528\u7684\u5185\u7f6e\u51fd\u6570<\/strong>\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u83b7\u53d6\u5404\u79cd\u6570\u636e\u7c7b\u578b\u7684\u957f\u5ea6\uff0c\u5e76\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u3002\u65e0\u8bba\u662f\u5728\u6570\u636e\u5904\u7406\u3001\u8f93\u5165\u9a8c\u8bc1\u3001\u6587\u672c\u5206\u6790\u8fd8\u662f\u96c6\u5408\u8fd0\u7b97\u4e2d\uff0clen() \u51fd\u6570\u90fd\u80fd\u63d0\u4f9b\u6709\u529b\u7684\u652f\u6301\uff0c\u4f7f\u6211\u4eec\u7684\u4ee3\u7801\u66f4\u52a0\u9ad8\u6548\u548c\u7b80\u6d01\u3002<\/p>\n<\/p>\n
                      \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                       \u5728Python\u4e2d\uff0clen\u51fd\u6570\u7684\u8fd4\u56de\u503c\u53ef\u4ee5\u7528\u4e8e\u54ea\u4e9b\u6570\u636e\u7c7b\u578b\uff1f<\/strong>
                      len\u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u3001\u96c6\u5408\u7b49\u3002\u5bf9\u4e8e\u5b57\u7b26\u4e32\uff0clen\u51fd\u6570\u8fd4\u56de\u5b57\u7b26\u7684\u6570\u91cf\uff1b\u5bf9\u4e8e\u5217\u8868\u548c\u5143\u7ec4\uff0c\u8fd4\u56de\u5143\u7d20\u7684\u6570\u91cf\uff1b\u5bf9\u4e8e\u5b57\u5178\uff0c\u8fd4\u56de\u952e\u7684\u6570\u91cf\uff1b\u5bf9\u4e8e\u96c6\u5408\uff0c\u8fd4\u56de\u96c6\u5408\u4e2d\u552f\u4e00\u5143\u7d20\u7684\u6570\u91cf\u3002<\/p>\n
                      \u5982\u4f55\u4f7f\u7528len\u51fd\u6570\u6765\u5224\u65ad\u4e00\u4e2a\u5217\u8868\u662f\u5426\u4e3a\u7a7a\uff1f<\/strong>
                      \u53ef\u4ee5\u901a\u8fc7\u5c06\u5217\u8868\u4f20\u9012\u7ed9len\u51fd\u6570\u6765\u68c0\u67e5\u5176\u662f\u5426\u4e3a\u7a7a\u3002\u82e5len\u51fd\u6570\u8fd4\u56de\u503c\u4e3a0\uff0c\u5219\u8868\u793a\u8be5\u5217\u8868\u4e3a\u7a7a\u3002\u4f8b\u5982\uff1amy_list = []<\/code>\uff0c\u4f7f\u7528len(my_list)<\/code>\u5c06\u8fd4\u56de0\uff0c\u8868\u660e\u5217\u8868\u6ca1\u6709\u4efb\u4f55\u5143\u7d20\u3002<\/p>\n
                      \u5728\u4f7f\u7528len\u51fd\u6570\u65f6\uff0c\u6709\u6ca1\u6709\u53ef\u80fd\u51fa\u73b0\u9519\u8bef\u6216\u5f02\u5e38\u60c5\u51b5\uff1f<\/strong>
                      len\u51fd\u6570\u901a\u5e38\u4e0d\u4f1a\u5f15\u53d1\u5f02\u5e38\uff0c\u4f46\u5982\u679c\u4f20\u5165\u7684\u5bf9\u8c61\u4e0d\u652f\u6301len\u64cd\u4f5c\uff0c\u5982\u67d0\u4e9b\u81ea\u5b9a\u4e49\u5bf9\u8c61\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4TypeError\u3002\u5728\u7f16\u5199\u4ee3\u7801\u65f6\uff0c\u786e\u4fdd\u4f20\u5165\u7684\u5bf9\u8c61\u662f\u9002\u7528\u4e8elen\u51fd\u6570\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4ee5\u907f\u514d\u6b64\u7c7b\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728 Python \u4e2d\uff0clen() \u51fd\u6570\u7528\u4e8e\u8fd4\u56de\u5bf9\u8c61\u7684\u957f\u5ea6\uff08\u5373\u9879\u76ee\u6570\uff09\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982\u5b57\u7b26\u4e32\u3001 […]","protected":false},"author":3,"featured_media":1066153,"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\/1066143"}],"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=1066143"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1066143\/revisions"}],"predecessor-version":[{"id":1066157,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1066143\/revisions\/1066157"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1066153"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1066143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1066143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1066143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}