{"id":1153764,"date":"2025-01-13T17:42:39","date_gmt":"2025-01-13T09:42:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1153764.html"},"modified":"2025-01-13T17:42:42","modified_gmt":"2025-01-13T09:42:42","slug":"%e5%a6%82%e4%bd%95%e6%b1%82python%e5%88%97%e8%a1%a8%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1153764.html","title":{"rendered":"\u5982\u4f55\u6c42Python\u5217\u8868\u957f\u5ea6"},"content":{"rendered":"

\"\u5982\u4f55\u6c42Python\u5217\u8868\u957f\u5ea6\"<\/p>\n

\u5728Python\u4e2d\uff0c\u6c42\u5217\u8868\u7684\u957f\u5ea6\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()<\/code><\/strong>\u3002\u8fd9\u4e2a\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u5217\u8868\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u5217\u8868\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f7f\u7528 len()<\/code> \u51fd\u6570\u3001\u904d\u5386\u5217\u8868\u5e76\u8ba1\u6570\u3001\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5<\/strong>\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\u7684\u4e00\u79cd\u3002<\/p>\n<\/p>\n

\u4f7f\u7528 len()<\/code> \u51fd\u6570<\/strong>\uff1a\u8fd9\u662f\u6700\u7b80\u5355\u548c\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u53ea\u9700\u5c06\u5217\u8868\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 len()<\/code> \u51fd\u6570\u5373\u53ef\u8fd4\u56de\u5217\u8868\u7684\u957f\u5ea6\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

my_list = [1, 2, 3, 4, 5]<\/p>\n
length = len(my_list)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
len()<\/code> \u51fd\u6570\u4e0d\u4ec5\u9002\u7528\u4e8e\u5217\u8868\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u5143\u7ec4\u3001\u5b57\u5178\u7b49\u3002\u5b83\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(1)\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u8fd4\u56de\u5b58\u50a8\u5728\u5bf9\u8c61\u4e2d\u7684\u957f\u5ea6\u5c5e\u6027\u3002<\/p>\n<\/p>\n
\n
\u4e00\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570 len()<\/code><\/h3>\n<\/p>\n
\u4f7f\u7528 len()<\/code> \u51fd\u6570\u662f\u6c42\u5217\u8868\u957f\u5ea6\u6700\u7b80\u5355\u3001\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u3002\u5b83\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(1)\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u8bfb\u53d6\u5b58\u50a8\u5728\u5bf9\u8c61\u4e2d\u7684\u957f\u5ea6\u5c5e\u6027\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length = len(my_list)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\uff0c\u7136\u540e\u4f7f\u7528 len()<\/code> \u51fd\u6570\u6765\u83b7\u53d6\u5217\u8868\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa length<\/code> \u7684\u503c\uff0c\u7ed3\u679c\u662f 5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u904d\u5386\u5217\u8868\u5e76\u8ba1\u6570<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u51b5\u4e0b\uff08\u4f8b\u5982\uff0c\u4f7f\u7528\u4e0d\u652f\u6301\u5185\u7f6e\u51fd\u6570\u7684\u7f16\u7a0b\u73af\u5883\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u5217\u8868\u5e76\u624b\u52a8\u8ba1\u6570\u7684\u65b9\u6cd5\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n)\uff0c\u5176\u4e2d n \u662f\u5217\u8868\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length = 0<\/p>\n
for element in my_list:<\/p>\n
    length += 1<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\uff0c\u7136\u540e\u521d\u59cb\u5316\u4e00\u4e2a\u8ba1\u6570\u5668 length<\/code> \u4e3a 0\u3002\u901a\u8fc7\u904d\u5386\u5217\u8868\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u6211\u4eec\u5c06\u8ba1\u6570\u5668 length<\/code> \u9012\u589e 1\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa length<\/code> \u7684\u503c\uff0c\u7ed3\u679c\u662f 5\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5<\/h3>\n<\/p>\n
\u9012\u5f52\u662f\u4e00\u79cd\u7f16\u7a0b\u6280\u5de7\uff0c\u5176\u4e2d\u4e00\u4e2a\u51fd\u6570\u8c03\u7528\u81ea\u8eab\u6765\u89e3\u51b3\u95ee\u9898\u3002\u5728\u6c42\u5217\u8868\u957f\u5ea6\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5\u6765\u904d\u5386\u5217\u8868\u5e76\u8ba1\u6570\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n)\uff0c\u5176\u4e2d n \u662f\u5217\u8868\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
def recursive_length(lst):<\/p>\n
    if lst == []:<\/p>\n
        return 0<\/p>\n
    else:<\/p>\n
        return 1 + recursive_length(lst[1:])<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length = recursive_length(my_list)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9012\u5f52\u51fd\u6570 recursive_length()<\/code>\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u5217\u8868 lst<\/code> \u4f5c\u4e3a\u53c2\u6570\u3002\u5982\u679c\u5217\u8868\u4e3a\u7a7a\uff08\u5373 lst == []<\/code>\uff09\uff0c\u5219\u8fd4\u56de 0\uff1b\u5426\u5219\uff0c\u8fd4\u56de 1 \u52a0\u4e0a\u5217\u8868\u5269\u4f59\u90e8\u5206\u7684\u957f\u5ea6\u3002\u901a\u8fc7\u9012\u5f52\u8c03\u7528\u81ea\u8eab\u6765\u8ba1\u7b97\u5217\u8868\u7684\u957f\u5ea6\u3002\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\uff0c\u7136\u540e\u8c03\u7528 recursive_length()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa length<\/code> \u7684\u503c\uff0c\u7ed3\u679c\u662f 5\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528 NumPy \u5e93<\/h3>\n<\/p>\n
\u5982\u679c\u4f60\u6b63\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\uff0c\u53ef\u80fd\u4f1a\u4f7f\u7528 NumPy \u5e93\u3002NumPy \u662f\u4e00\u4e2a\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u591a\u79cd\u5904\u7406\u6570\u7ec4\u7684\u529f\u80fd\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 NumPy \u7684 len()<\/code> \u51fd\u6570\u6765\u6c42\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u9996\u5148\uff0c\u4f60\u9700\u8981\u5b89\u88c5 NumPy \u5e93\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n
pip install numpy<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\uff1a<\/p>\n<\/p>\n
import numpy as np<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
np_array = np.array(my_list)<\/p>\n
length = len(np_array)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5bfc\u5165\u4e86 NumPy \u5e93\uff0c\u5e76\u5c06\u5217\u8868 my_list<\/code> \u8f6c\u6362\u4e3a NumPy \u6570\u7ec4 np_array<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 len()<\/code> \u51fd\u6570\u6765\u6c42\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa length<\/code> \u7684\u503c\uff0c\u7ed3\u679c\u662f 5\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528 pandas \u5e93<\/h3>\n<\/p>\n
Pandas \u662f\u53e6\u4e00\u4e2a\u7528\u4e8e\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u7684\u5e93\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u79cd\u5904\u7406\u6570\u636e\u7684\u529f\u80fd\uff0c\u5305\u62ec\u6c42\u5217\u8868\u957f\u5ea6\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 Pandas \u7684 len()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u9996\u5148\uff0c\u4f60\u9700\u8981\u5b89\u88c5 Pandas \u5e93\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n
pip install pandas<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\uff1a<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
series = pd.Series(my_list)<\/p>\n
length = len(series)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5bfc\u5165\u4e86 Pandas \u5e93\uff0c\u5e76\u5c06\u5217\u8868 my_list<\/code> \u8f6c\u6362\u4e3a Pandas Series series<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 len()<\/code> \u51fd\u6570\u6765\u6c42 Series \u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa length<\/code> \u7684\u503c\uff0c\u7ed3\u679c\u662f 5\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u96c6\u5408\uff08set\uff09<\/h3>\n<\/p>\n
\u96c6\u5408\u662f\u4e00\u79cd\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u7684\u5143\u7d20\u96c6\u5408\u3002\u867d\u7136\u96c6\u5408\u4e0d\u76f4\u63a5\u7528\u4e8e\u6c42\u5217\u8868\u957f\u5ea6\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u96c6\u5408\uff0c\u7136\u540e\u4f7f\u7528 len()<\/code> \u51fd\u6570\u6765\u6c42\u96c6\u5408\u7684\u957f\u5ea6\u3002\u8fd9\u5728\u5904\u7406\u5305\u542b\u91cd\u590d\u5143\u7d20\u7684\u5217\u8868\u65f6\u7279\u522b\u6709\u7528\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5, 5, 4]<\/p>\n
unique_elements = set(my_list)<\/p>\n
length = len(unique_elements)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e03\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\uff0c\u5176\u4e2d\u5305\u542b\u91cd\u590d\u5143\u7d20\u3002\u7136\u540e\uff0c\u6211\u4eec\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u96c6\u5408 unique_elements<\/code>\uff0c\u96c6\u5408\u4f1a\u81ea\u52a8\u79fb\u9664\u91cd\u590d\u5143\u7d20\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 len()<\/code> \u51fd\u6570\u6765\u6c42\u96c6\u5408\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u96c6\u5408\u4e2d\u53ea\u4fdd\u7559\u4e86\u552f\u4e00\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/h3>\n<\/p>\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u4e14\u9ad8\u6548\u7684\u521b\u5efa\u5217\u8868\u7684\u65b9\u6cd5\u3002\u867d\u7136\u5217\u8868\u63a8\u5bfc\u5f0f\u672c\u8eab\u4e0d\u7528\u4e8e\u6c42\u5217\u8868\u957f\u5ea6\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7ed3\u5408\u5217\u8868\u63a8\u5bfc\u5f0f\u548c len()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u4e2d\u7b26\u5408\u7279\u5b9a\u6761\u4ef6\u7684\u5143\u7d20\u6570\u91cf\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]<\/p>\n
even_numbers = [x for x in my_list if x % 2 == 0]<\/p>\n
length = len(even_numbers)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u5341\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u521b\u5efa\u4e00\u4e2a\u53ea\u5305\u542b\u5076\u6570\u7684\u5217\u8868 even_numbers<\/code>\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 len()<\/code> \u51fd\u6570\u6765\u6c42\u5076\u6570\u5217\u8868\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u5217\u8868\u4e2d\u6709\u4e94\u4e2a\u5076\u6570\u3002<\/p>\n<\/p>\n
\u516b\u3001\u5904\u7406\u5d4c\u5957\u5217\u8868<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5904\u7406\u5d4c\u5957\u5217\u8868\uff08\u5373\u5217\u8868\u4e2d\u7684\u5143\u7d20\u4e5f\u662f\u5217\u8868\uff09\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5\u6765\u6c42\u5d4c\u5957\u5217\u8868\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
def nested_length(lst):<\/p>\n
    if isinstance(lst, list):<\/p>\n
        return sum(nested_length(item) for item in lst)<\/p>\n
    else:<\/p>\n
        return 1<\/p>\n
my_list = [1, [2, 3], [4, [5, 6]], 7]<\/p>\n
length = nested_length(my_list)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a7<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9012\u5f52\u51fd\u6570 nested_length()<\/code>\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u5217\u8868 lst<\/code> \u4f5c\u4e3a\u53c2\u6570\u3002\u5982\u679c lst<\/code> \u662f\u4e00\u4e2a\u5217\u8868\uff0c\u5219\u9012\u5f52\u8c03\u7528\u81ea\u8eab\u6765\u8ba1\u7b97\u6bcf\u4e2a\u5b50\u5217\u8868\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u7ed3\u679c\u76f8\u52a0\uff1b\u5426\u5219\uff0c\u8fd4\u56de 1\u3002\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u5d4c\u5957\u5217\u8868\u7684\u5217\u8868 my_list<\/code>\uff0c\u7136\u540e\u8c03\u7528 nested_length()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa length<\/code> \u7684\u503c\uff0c\u7ed3\u679c\u662f 7\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u5904\u7406\u5927\u578b\u5217\u8868<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u5927\u578b\u5217\u8868\u65f6\uff0c\u6c42\u5217\u8868\u957f\u5ea6\u53ef\u80fd\u4f1a\u6d88\u8017\u5927\u91cf\u7684\u5185\u5b58\u548c\u8ba1\u7b97\u8d44\u6e90\u3002\u4e3a\u4e86\u63d0\u9ad8\u6548\u7387\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u548c sum()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]<\/p>\n
length = sum(1 for _ in my_list)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a10<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u5341\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528\u751f\u6210\u5668\u8868\u8fbe\u5f0f 1 for _ in my_list<\/code> \u6765\u751f\u6210\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u8be5\u8fed\u4ee3\u5668\u5728\u904d\u5386\u5217\u8868\u65f6\u751f\u6210\u503c 1\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 sum()<\/code> \u51fd\u6570\u6765\u7d2f\u52a0\u8fed\u4ee3\u5668\u751f\u6210\u7684\u503c\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 10\uff0c\u56e0\u4e3a\u5217\u8868\u4e2d\u6709\u5341\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u3001\u5728\u591a\u7ef4\u6570\u7ec4\u4e2d\u6c42\u957f\u5ea6<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 NumPy \u5e93\u6765\u6c42\u6570\u7ec4\u7684\u957f\u5ea6\u3002NumPy \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5904\u7406\u591a\u7ef4\u6570\u7ec4\uff0c\u5305\u62ec\u6c42\u6570\u7ec4\u7684\u5f62\u72b6\u3001\u7ef4\u5ea6\u548c\u5927\u5c0f\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
my_array = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])<\/p>\n
shape = my_array.shape<\/p>\n
length = my_array.size<\/p>\n
print(f"Shape: {shape}, Length: {length}")  # \u8f93\u51fa\uff1aShape: (3, 3), Length: 9<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a 3×3 \u7684\u4e8c\u7ef4\u6570\u7ec4 my_array<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 shape<\/code> \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u5f62\u72b6\uff0c\u5e76\u4f7f\u7528 size<\/code> \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u5927\u5c0f\uff08\u5373\u5143\u7d20\u7684\u603b\u6570\u91cf\uff09\u3002\u6700\u540e\uff0c\u6211\u4eec\u6253\u5370\u51fa\u6570\u7ec4\u7684\u5f62\u72b6\u548c\u5927\u5c0f\u3002\u7ed3\u679c\u662f\u5f62\u72b6\u4e3a (3, 3)\uff0c\u5927\u5c0f\u4e3a 9\uff0c\u56e0\u4e3a\u6570\u7ec4\u4e2d\u6709\u4e5d\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u4e00\u3001\u4f7f\u7528 itertools \u6a21\u5757<\/h3>\n<\/p>\n
itertools<\/code> \u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u7528\u4e8e\u64cd\u4f5c\u8fed\u4ee3\u5668\u7684\u51fd\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 itertools.chAI<\/a>n()<\/code> \u51fd\u6570\u6765\u5c06\u591a\u4e2a\u5217\u8868\u8fde\u63a5\u6210\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u5e76\u4f7f\u7528 sum()<\/code> \u51fd\u6570\u6765\u6c42\u5176\u957f\u5ea6\u3002<\/p>\n<\/p>\n
import itertools<\/p>\n
list1 = [1, 2, 3]<\/p>\n
list2 = [4, 5, 6]<\/p>\n
list3 = [7, 8, 9]<\/p>\n
combined_length = sum(1 for _ in itertools.chain(list1, list2, list3))<\/p>\n
print(combined_length)  # \u8f93\u51fa\uff1a9<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e09\u4e2a\u5217\u8868 list1<\/code>\u3001list2<\/code> \u548c list3<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 itertools.chain()<\/code> \u51fd\u6570\u5c06\u8fd9\u4e09\u4e2a\u5217\u8868\u8fde\u63a5\u6210\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528\u751f\u6210\u5668\u8868\u8fbe\u5f0f 1 for _ in itertools.chain(list1, list2, list3)<\/code> \u548c sum()<\/code> \u51fd\u6570\u6765\u6c42\u8fed\u4ee3\u5668\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf combined_length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 9\uff0c\u56e0\u4e3a\u4e09\u4e2a\u5217\u8868\u4e2d\u603b\u5171\u6709\u4e5d\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u4e8c\u3001\u4f7f\u7528 map() \u51fd\u6570<\/h3>\n<\/p>\n
map()<\/code> \u51fd\u6570\u53ef\u4ee5\u5c06\u4e00\u4e2a\u51fd\u6570\u5e94\u7528\u5230\u4e00\u4e2a\u6216\u591a\u4e2a\u8fed\u4ee3\u5668\u7684\u6bcf\u4e2a\u5143\u7d20\u4e0a\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 map()<\/code> \u51fd\u6570\u548c sum()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u957f\u5ea6\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length = sum(map(lambda x: 1, my_list))<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 map()<\/code> \u51fd\u6570\u5c06\u533f\u540d\u51fd\u6570 lambda x: 1<\/code> \u5e94\u7528\u5230\u5217\u8868\u7684\u6bcf\u4e2a\u5143\u7d20\u4e0a\uff0c\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u8fed\u4ee3\u5668\u3002\u533f\u540d\u51fd\u6570 lambda x: 1<\/code> \u8fd4\u56de\u503c 1\uff0c\u65e0\u8bba\u8f93\u5165\u662f\u4ec0\u4e48\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 sum()<\/code> \u51fd\u6570\u6765\u7d2f\u52a0\u8fed\u4ee3\u5668\u751f\u6210\u7684\u503c\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u5217\u8868\u4e2d\u6709\u4e94\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u4e09\u3001\u4f7f\u7528 reduce() \u51fd\u6570<\/h3>\n<\/p>\n
reduce()<\/code> \u51fd\u6570\u662f\u4e00\u4e2a\u9ad8\u9636\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u5c06\u4e00\u4e2a\u4e8c\u5143\u51fd\u6570\u5e94\u7528\u5230\u4e00\u4e2a\u8fed\u4ee3\u5668\u7684\u6bcf\u4e2a\u5143\u7d20\u4e0a\uff0c\u9010\u6b65\u7d2f\u79ef\u7ed3\u679c\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 reduce()<\/code> \u51fd\u6570\u6765\u6c42\u5217\u8868\u957f\u5ea6\u3002<\/p>\n<\/p>\n
from functools import reduce<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length = reduce(lambda acc, _: acc + 1, my_list, 0)<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 reduce()<\/code> \u51fd\u6570\u5c06\u533f\u540d\u51fd\u6570 lambda acc, _: acc + 1<\/code> \u5e94\u7528\u5230\u5217\u8868\u7684\u6bcf\u4e2a\u5143\u7d20\u4e0a\uff0c\u9010\u6b65\u7d2f\u79ef\u7ed3\u679c\u3002\u533f\u540d\u51fd\u6570 lambda acc, _: acc + 1<\/code> \u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u7d2f\u52a0\u5668 acc<\/code> \u548c\u5f53\u524d\u5143\u7d20 _<\/code>\uff0c\u5e76\u8fd4\u56de\u7d2f\u52a0\u5668\u52a0 1 \u7684\u503c\u3002\u521d\u59cb\u503c\u4e3a 0\u3002\u6700\u540e\uff0c\u6211\u4eec\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u5217\u8868\u4e2d\u6709\u4e94\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u56db\u3001\u4f7f\u7528 collections.Counter<\/h3>\n<\/p>\n
collections<\/code> \u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u5bb9\u5668\u6570\u636e\u7c7b\u578b\uff0c\u5176\u4e2d Counter<\/code> \u7c7b\u7528\u4e8e\u8ba1\u6570\u53ef\u54c8\u5e0c\u5bf9\u8c61\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Counter<\/code> \u7c7b\u6765\u6c42\u5217\u8868\u957f\u5ea6\u3002<\/p>\n<\/p>\n
from collections import Counter<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
counter = Counter(my_list)<\/p>\n
length = sum(counter.values())<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 Counter<\/code> \u7c7b\u6765\u521b\u5efa\u4e00\u4e2a\u8ba1\u6570\u5668 counter<\/code>\uff0c\u5b83\u4f1a\u8ba1\u7b97\u5217\u8868\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u51fa\u73b0\u6b21\u6570\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 sum()<\/code> \u51fd\u6570\u6765\u7d2f\u52a0\u8ba1\u6570\u5668\u7684\u503c\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u5217\u8868\u4e2d\u6709\u4e94\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u4e94\u3001\u4f7f\u7528 enumerate() \u51fd\u6570<\/h3>\n<\/p>\n
enumerate()<\/code> \u51fd\u6570\u53ef\u4ee5\u540c\u65f6\u8fed\u4ee3\u7d22\u5f15\u548c\u5143\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 enumerate()<\/code> \u51fd\u6570\u548c\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u6765\u6c42\u5217\u8868\u957f\u5ea6\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
length = sum(1 for _ in enumerate(my_list))<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u5143\u7d20\u7684\u5217\u8868 my_list<\/code>\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 enumerate()<\/code> \u51fd\u6570\u6765\u540c\u65f6\u8fed\u4ee3\u7d22\u5f15\u548c\u5143\u7d20\uff0c\u5e76\u4f7f\u7528\u751f\u6210\u5668\u8868\u8fbe\u5f0f 1 for _ in enumerate(my_list)<\/code> \u6765\u751f\u6210\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 sum()<\/code> \u51fd\u6570\u6765\u7d2f\u52a0\u8fed\u4ee3\u5668\u751f\u6210\u7684\u503c\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u5217\u8868\u4e2d\u6709\u4e94\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u5341\u516d\u3001\u4f7f\u7528\u94fe\u8868\u6570\u636e\u7ed3\u6784<\/h3>\n<\/p>\n
\u94fe\u8868\u662f\u4e00\u79cd\u7ebf\u6027\u6570\u636e\u7ed3\u6784\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2a\u8282\u70b9\uff0c\u8282\u70b9\u5305\u542b\u6570\u636e\u548c\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u94fe\u8868\u6570\u636e\u7ed3\u6784\u6765\u6c42\u5217\u8868\u957f\u5ea6\u3002<\/p>\n<\/p>\n
class Node:<\/p>\n
    def __init__(self, data):<\/p>\n
        self.data = data<\/p>\n
        self.next = None<\/p>\n
class LinkedList:<\/p>\n
    def __init__(self):<\/p>\n
        self.head = None<\/p>\n
    def append(self, data):<\/p>\n
        new_node = Node(data)<\/p>\n
        if self.head is None:<\/p>\n
            self.head = new_node<\/p>\n
        else:<\/p>\n
            current = self.head<\/p>\n
            while current.next:<\/p>\n
                current = current.next<\/p>\n
            current.next = new_node<\/p>\n
    def length(self):<\/p>\n
        count = 0<\/p>\n
        current = self.head<\/p>\n
        while current:<\/p>\n
            count += 1<\/p>\n
            current = current.next<\/p>\n
        return count<\/p>\n
my_list = LinkedList()<\/p>\n
my_list.append(1)<\/p>\n
my_list.append(2)<\/p>\n
my_list.append(3)<\/p>\n
my_list.append(4)<\/p>\n
my_list.append(5)<\/p>\n
length = my_list.length()<\/p>\n
print(length)  # \u8f93\u51fa\uff1a5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a Node<\/code> \u7c7b\u548c\u4e00\u4e2a LinkedList<\/code> \u7c7b\u3002Node<\/code> \u7c7b\u5305\u542b\u6570\u636e\u548c\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488\u3002LinkedList<\/code> \u7c7b\u5305\u542b\u4e00\u4e2a\u6307\u5411\u94fe\u8868\u5934\u90e8\u7684\u6307\u9488\uff0c\u5e76\u63d0\u4f9b\u4e86 append()<\/code> \u65b9\u6cd5\u6765\u5728\u94fe\u8868\u672b\u5c3e\u6dfb\u52a0\u8282\u70b9\u548c length()<\/code> \u65b9\u6cd5\u6765\u6c42\u94fe\u8868\u7684\u957f\u5ea6\u3002\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a LinkedList<\/code> \u5bf9\u8c61 my_list<\/code>\uff0c\u5e76\u6dfb\u52a0\u4e86\u4e94\u4e2a\u8282\u70b9\u3002\u6700\u540e\uff0c\u6211\u4eec\u8c03\u7528 length()<\/code> \u65b9\u6cd5\u6765\u6c42\u94fe\u8868\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf length<\/code> \u4e2d\u3002\u7ed3\u679c\u662f 5\uff0c\u56e0\u4e3a\u94fe<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u83b7\u53d6\u4e00\u4e2a\u5217\u8868\u7684\u957f\u5ea6\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684len()<\/code>\u51fd\u6570\u6765\u83b7\u53d6\u5217\u8868\u7684\u957f\u5ea6\u3002\u53ea\u9700\u5c06\u5217\u8868\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9len()<\/code>\uff0c\u5b83\u5c06\u8fd4\u56de\u8be5\u5217\u8868\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff0clen(my_list)<\/code>\u5c06\u8fd4\u56demy_list<\/code>\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002<\/p>\n
\u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u6765\u8ba1\u7b97\u5217\u8868\u7684\u957f\u5ea6\uff1f<\/strong>
\u9664\u4e86\u4f7f\u7528len()<\/code>\u51fd\u6570\u5916\uff0c\u867d\u7136\u4e0d\u5e38\u89c1\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u5217\u8868\u5e76\u624b\u52a8\u8ba1\u6570\u6765\u8ba1\u7b97\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u76f8\u5bf9\u7e41\u7410\uff0c\u901a\u5e38\u4e0d\u63a8\u8350\u4f7f\u7528\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
count = 0\nfor item in my_list:\n    count += 1\nprint(count)\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u4f7f\u7528len()<\/code>\u51fd\u6570\u662f\u6700\u7b80\u6d01\u548c\u9ad8\u6548\u7684\u65b9\u5f0f\u3002<\/p>\n
\u5728\u7a7a\u5217\u8868\u4e2d\uff0c\u5982\u4f55\u67e5\u770b\u957f\u5ea6\u7684\u8fd4\u56de\u503c\uff1f<\/strong>
\u5bf9\u4e8e\u4e00\u4e2a\u7a7a\u5217\u8868\uff0c\u4f7f\u7528len()<\/code>\u51fd\u6570\u8fd4\u56de\u7684\u7ed3\u679c\u5c06\u662f0\u3002\u4f8b\u5982\uff0cempty_list = []<\/code>\uff0c\u8c03\u7528len(empty_list)<\/code>\u5c06\u8fd4\u56de0\uff0c\u8868\u793a\u8be5\u5217\u8868\u4e2d\u6ca1\u6709\u4efb\u4f55\u5143\u7d20\u3002\u7a7a\u5217\u8868\u7684\u957f\u5ea6\u59cb\u7ec8\u4e3a\u96f6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6c42\u5217\u8868\u7684\u957f\u5ea6\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()\u3002\u8fd9\u4e2a\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u5217\u8868\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u5217\u8868\u4e2d\u5143\u7d20\u7684\u6570\u91cf […]","protected":false},"author":3,"featured_media":1153768,"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\/1153764"}],"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=1153764"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1153764\/revisions"}],"predecessor-version":[{"id":1153769,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1153764\/revisions\/1153769"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1153768"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1153764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1153764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1153764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}