Question

我正在尝试在for循环中打印数据，但输出省略了行尾的'\ n'....

f.write(f'[{str(train_time[i])}] № {str(train_number[i])} {str(train_direct[i])}\n')

为什么我最后没有换行？把'\ n'放在最后并没有这样做。

这是所有代码块

import re

with open('input.txt', 'r', encoding='utf-8') as f:
    text = str(f.read())
    train_time = re.findall(r'\d{3}\s\w+\s\w{1,2}.+(\d{2}\:\d{2}\:\d{2})', text)
    train_number = re.findall(r'(\d{3})\s\w+\s\w{1,2}.+\d{2}\:\d{2}\:\d{2}', text)
    train_direct = re.findall(r'\d{3}\s\w+\s(\w{1,2}\s\w+)', text)

with open('output.txt', 'w+', encoding='utf-8', newline='\n') as f:
    i = 0
    for i in range(len(train_number)):
        f.write(f'[{str(train_time[i])}] № {str(train_number[i])} {str(train_direct[i])}\n')

Answer 1

如果您最终要尝试格式化字符串，则必须像here中那样进行格式化。

此外，在格式化之后，尝试添加'\n'，如下所示：

f.write(f'[{str(train_time[i])}] № {str(train_number[i])} {str(train_direct[i])}'+'\n')

\ n写入文件时缺少f-string（Python 3.6.3）

1 个答案: