{"id":1043036,"date":"2024-12-31T13:02:26","date_gmt":"2024-12-31T05:02:26","guid":{"rendered":""},"modified":"2024-12-31T13:02:29","modified_gmt":"2024-12-31T05:02:29","slug":"python%e5%a6%82%e4%bd%95%e8%be%93%e5%87%ba%e5%88%97%e8%a1%a8%e4%b8%ad%e6%89%80%e6%9c%89%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1043036.html","title":{"rendered":"python\u5982\u4f55\u8f93\u51fa\u5217\u8868\u4e2d\u6240\u6709\u6570"},"content":{"rendered":"

\"python\u5982\u4f55\u8f93\u51fa\u5217\u8868\u4e2d\u6240\u6709\u6570\"<\/p>\n

Python \u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8f93\u51fa\u5217\u8868\u4e2d\u6240\u6709\u7684\u6570\uff0c\u5305\u62ec\u4f7f\u7528\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u3001join<\/code> \u65b9\u6cd5\u7b49\u3002<\/strong>\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 for<\/code> \u5faa\u73af\u904d\u5386\u5217\u8868\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u9010\u4e2a\u8f93\u51fa\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u4ecb\u7ecd\uff1a<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528 for<\/code> \u5faa\u73af\u904d\u5386\u5217\u8868<\/h3>\n<\/p>\n

\u4f7f\u7528 for<\/code> \u5faa\u73af\u662f\u6700\u57fa\u672c\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u901a\u8fc7\u5faa\u73af\u904d\u5386\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u5e76\u9010\u4e2a\u8f93\u51fa\u3002<\/p>\n<\/p>\n

numbers = [1, 2, 3, 4, 5]<\/p>\n
for number in numbers:<\/p>\n
    print(number)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5305\u542b\u6570\u5b57\u7684\u5217\u8868 numbers<\/code>\uff0c\u7136\u540e\u4f7f\u7528 for<\/code> \u5faa\u73af\u904d\u5386\u5217\u8868\uff0c\u5e76\u5c06\u6bcf\u4e2a\u6570\u5b57\u6253\u5370\u51fa\u6765\u3002\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u89c2\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/h3>\n<\/p>\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u8bed\u6cd5\uff0c\u53ef\u4ee5\u5728\u4e00\u884c\u4ee3\u7801\u4e2d\u5b8c\u6210\u5217\u8868\u5143\u7d20\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
[print(number) for number in numbers]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u7b80\u6d01\uff0c\u4f46\u5728\u6027\u80fd\u548c\u53ef\u8bfb\u6027\u4e0a\u53ef\u80fd\u4e0d\u5982\u4f20\u7edf\u7684 for<\/code> \u5faa\u73af\uff0c\u56e0\u6b64\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u8fdb\u884c\u9009\u62e9\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528 join<\/code> \u65b9\u6cd5<\/h3>\n<\/p>\n
\u5982\u679c\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u5b57\u7b26\u4e32\uff0c\u6216\u8005\u53ef\u4ee5\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528 join<\/code> \u65b9\u6cd5\u5c06\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u8fde\u63a5\u6210\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5e76\u8f93\u51fa\u3002<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
print(" ".join(map(str, numbers)))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 map<\/code> \u51fd\u6570\u5c06\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u4f7f\u7528 join<\/code> \u65b9\u6cd5\u5c06\u8fd9\u4e9b\u5b57\u7b26\u4e32\u8fde\u63a5\u8d77\u6765\uff0c\u5e76\u7528\u7a7a\u683c\u5206\u9694\u3002\u6700\u7ec8\u5c06\u6574\u4e2a\u5b57\u7b26\u4e32\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528 enumerate<\/code> \u51fd\u6570<\/h3>\n<\/p>\n
\u5982\u679c\u9700\u8981\u5728\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\u65f6\uff0c\u540c\u65f6\u8f93\u51fa\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528 enumerate<\/code> \u51fd\u6570\u3002<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
for index, number in enumerate(numbers):<\/p>\n
    print(f"Index {index}: {number}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
enumerate<\/code> \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u7d22\u5f15\u548c\u503c\u7684\u5143\u7ec4\uff0c\u901a\u8fc7\u89e3\u5305\u53ef\u4ee5\u540c\u65f6\u83b7\u53d6\u7d22\u5f15\u548c\u5143\u7d20\u503c\uff0c\u5e76\u8fdb\u884c\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528 while<\/code> \u5faa\u73af<\/h3>\n<\/p>\n
\u9664\u4e86 for<\/code> \u5faa\u73af\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 while<\/code> \u5faa\u73af\u6765\u904d\u5386\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
index = 0<\/p>\n
while index < len(numbers):<\/p>\n
    print(numbers[index])<\/p>\n
    index += 1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 while<\/code> \u5faa\u73af\uff0c\u901a\u8fc7\u7ef4\u62a4\u4e00\u4e2a\u7d22\u5f15\u53d8\u91cf index<\/code> \u6765\u904d\u5386\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u5e76\u9010\u4e2a\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u9012\u5f52\u51fd\u6570<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u9012\u5f52\u51fd\u6570\u6765\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<\/p>\n
def print_list(numbers, index=0):<\/p>\n
    if index < len(numbers):<\/p>\n
        print(numbers[index])<\/p>\n
        print_list(numbers, index + 1)<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
print_list(numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u9012\u5f52\u51fd\u6570 print_list<\/code> \u5728\u6bcf\u6b21\u8c03\u7528\u65f6\u8f93\u51fa\u5f53\u524d\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\uff0c\u5e76\u9012\u5f52\u8c03\u7528\u81ea\u8eab\uff0c\u76f4\u5230\u904d\u5386\u5b8c\u6240\u6709\u5143\u7d20\u3002\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u4e0d\u5982\u5faa\u73af\u76f4\u89c2\uff0c\u4f46\u5728\u67d0\u4e9b\u7279\u5b9a\u573a\u666f\u4e0b\u53ef\u80fd\u4f1a\u66f4\u9002\u7528\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528 reduce<\/code> \u51fd\u6570<\/h3>\n<\/p>\n
reduce<\/code> \u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u7d2f\u79ef\u64cd\u4f5c\uff0c\u4f46\u901a\u8fc7\u9002\u5f53\u7684\u65b9\u5f0f\u4e5f\u53ef\u4ee5\u7528\u4e8e\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<\/p>\n
from functools import reduce<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
reduce(lambda _, number: print(number), numbers, None)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 reduce<\/code> \u51fd\u6570\uff0c\u901a\u8fc7\u4e00\u4e2a\u533f\u540d\u51fd\u6570 lambda<\/code> \u6765\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u5e38\u89c1\uff0c\u4f46\u5728\u9700\u8981\u8fdb\u884c\u7d2f\u79ef\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u987a\u4fbf\u5b8c\u6210\u8f93\u51fa\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u516b\u3001\u8f93\u51fa\u5230\u6587\u4ef6<\/h3>\n<\/p>\n
\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5c06\u5217\u8868\u4e2d\u7684\u5143\u7d20\u8f93\u51fa\u5230\u6587\u4ef6\uff0c\u800c\u4e0d\u662f\u6807\u51c6\u8f93\u51fa\u3002<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
with open('output.txt', 'w') as file:<\/p>\n
    for number in numbers:<\/p>\n
        file.write(f"{number}\\n")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 with<\/code> \u8bed\u53e5\u6253\u5f00\u4e00\u4e2a\u6587\u4ef6\uff0c\u5e76\u4f7f\u7528 for<\/code> \u5faa\u73af\u5c06\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u5199\u5165\u6587\u4ef6\u4e2d\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u5c06\u8f93\u51fa\u6301\u4e45\u5316\u5230\u6587\u4ef6\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u4f7f\u7528 numpy<\/code> \u5e93<\/h3>\n<\/p>\n
\u5982\u679c\u5904\u7406\u7684\u662f\u6570\u503c\u578b\u6570\u636e\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528 numpy<\/code> \u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\u529f\u80fd\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
numbers = np.array([1, 2, 3, 4, 5])<\/p>\n
print(numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 numpy<\/code> \u5e93\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\uff0c\u5e76\u76f4\u63a5\u8f93\u51fa\u6574\u4e2a\u6570\u7ec4\u3002numpy<\/code> \u5e93\u9002\u7528\u4e8e\u9700\u8981\u8fdb\u884c\u6570\u503c\u8ba1\u7b97\u548c\u77e9\u9635\u64cd\u4f5c\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u5341\u3001\u4f7f\u7528 pandas<\/code> \u5e93<\/h3>\n<\/p>\n
\u5982\u679c\u5904\u7406\u7684\u662f\u6570\u636e\u5206\u6790\u4efb\u52a1\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528 pandas<\/code> \u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u7ed3\u6784\u548c\u6570\u636e\u5206\u6790\u5de5\u5177\u3002<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
numbers = pd.Series([1, 2, 3, 4, 5])<\/p>\n
print(numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 pandas<\/code> \u5e93\u521b\u5efa\u4e00\u4e2a Series<\/code> \u5bf9\u8c61\uff0c\u5e76\u76f4\u63a5\u8f93\u51fa\u6574\u4e2a\u5bf9\u8c61\u3002pandas<\/code> \u5e93\u9002\u7528\u4e8e\u9700\u8981\u8fdb\u884c\u6570\u636e\u5206\u6790\u548c\u5904\u7406\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u603b\u7ed3<\/h3>\n<\/p>\n
\u4ee5\u4e0a\u4ecb\u7ecd\u4e86\u5728 Python \u4e2d\u8f93\u51fa\u5217\u8868\u4e2d\u6240\u6709\u6570\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528 for<\/code> \u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u3001join<\/code> \u65b9\u6cd5\u3001enumerate<\/code> \u51fd\u6570\u3001while<\/code> \u5faa\u73af\u3001\u9012\u5f52\u51fd\u6570\u3001reduce<\/code> \u51fd\u6570\u3001\u8f93\u51fa\u5230\u6587\u4ef6\uff0c\u4ee5\u53ca\u4f7f\u7528 numpy<\/code> \u548c pandas<\/code> \u5e93\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f18\u52bf<\/strong>\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u8fdb\u884c\u5b9e\u73b0\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3001\u6027\u80fd\u548c\u6613\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u904d\u5386\u5e76\u6253\u5370\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\uff08\u5982for\u5faa\u73af\uff09\u904d\u5386\u5217\u8868\u5e76\u6253\u5370\u6bcf\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\uff1a  <\/p>\n
my_list = [1, 2, 3, 4, 5]\nfor item in my_list:\n    print(item)\n<\/code><\/pre>\n
\u8fd9\u4e2a\u7b80\u5355\u7684\u4ee3\u7801\u5757\u5c06\u4f9d\u6b21\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u6240\u6709\u6570\u5b57\u3002<\/p>\n
\u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u6765\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff1f<\/strong>
\u9664\u4e86\u4f7f\u7528for\u5faa\u73af\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7ed3\u5408print\u51fd\u6570\u6765\u8f93\u51fa\u6240\u6709\u5143\u7d20\u3002\u4f8b\u5982\uff1a  <\/p>\n
my_list = [1, 2, 3, 4, 5]\nprint(*my_list, sep='\\n')\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u6cd5\u5c06\u4f1a\u628a\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u4ee5\u6362\u884c\u7684\u5f62\u5f0f\u8f93\u51fa\u3002<\/p>\n
\u5728\u8f93\u51fa\u5217\u8868\u65f6\uff0c\u5982\u4f55\u683c\u5f0f\u5316\u8f93\u51fa\u5185\u5bb9\uff1f<\/strong>
\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u6765\u6539\u53d8\u8f93\u51fa\u7684\u6837\u5f0f\u3002\u4f8b\u5982\uff0c\u4f7f\u7528f-string\u53ef\u4ee5\u5c06\u5217\u8868\u4e2d\u7684\u5143\u7d20\u4e0e\u5176\u4ed6\u6587\u672c\u7ed3\u5408\u8f93\u51fa\uff1a  <\/p>\n
my_list = [1, 2, 3, 4, 5]\nfor item in my_list:\n    print(f"\u5f53\u524d\u6570\u5b57\u662f\uff1a{item}")\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u8f93\u51fa\u5143\u7d20\uff0c\u8fd8\u53ef\u4ee5\u6dfb\u52a0\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u4f7f\u8f93\u51fa\u66f4\u5177\u53ef\u8bfb\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python \u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8f93\u51fa\u5217\u8868\u4e2d\u6240\u6709\u7684\u6570\uff0c\u5305\u62ec\u4f7f\u7528\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u3001join \u65b9\u6cd5\u7b49\u3002\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u4f7f […]","protected":false},"author":3,"featured_media":1043044,"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\/1043036"}],"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=1043036"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1043036\/revisions"}],"predecessor-version":[{"id":1043050,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1043036\/revisions\/1043050"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1043044"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1043036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1043036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1043036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}