为了支持多种操作系统的使用: 文件。写(f'some字符串和/或{variable}。{os.linesep}”)

为了支持多种操作系统的使用: 文件。写(f'some字符串和/或{variable}。{os.linesep}”)

你可以在需要这种行为的特定地方装饰方法write:

#Changed behavior is localized to single place.
with open('test1.txt', 'w') as file:    
    def decorate_with_new_line(method):
        def decorated(text):
            method(f'{text}\n')
        return decorated
    file.write = decorate_with_new_line(file.write)
    
    file.write('This will be on line 1')
    file.write('This will be on line 2')
    file.write('This will be on line 3')

#Standard behavior is not affected. No class was modified.
with open('test2.txt', 'w') as file:
        
    file.write('This will be on line 1')
    file.write('This will be on line 1')
    file.write('This will be on line 1')  

实际上，当你使用多行语法时，就像这样:

f.write("""
line1
line2
line2""")

你不需要添加\n!

请注意，该文件在Python 3中不支持，已被删除。你可以用open内置函数做同样的事情。

f = open('test.txt', 'w')
f.write('test\n')

你可以使用:

file.write(your_string + '\n')