阅读同一个文件的多行次Python

Question

我试图在Python中多次读取一些文件的行。

我使用这个基本途径：

with open(name, 'r+') as file: 
       for line in file: 
        # Do Something with line 

，这就是工作正常，但如果我想每个迭代线，而我还是用我的文件一样打开第二次：

with open(name, 'r+') as file: 
       for line in file: 
        # Do Something with line 
       for line in file: 
        # Do Something with line, second time 

然后它不起作用，我需要打开，然后关闭，然后再打开我的文件，使其工作。

with open(name, 'r+') as file: 
        for line in file: 
         # Do Something with line 
with open(name, 'r+') as file: 
        for line in file: 
         # Do Something with line 

感谢您的回答！

Answer 1

使用file.seek()跳转到文件中的特定位置。但是，请考虑是否真的有必要再次通过文件。也许有更好的选择。

with open(name, 'r+') as file: 
    for line in file: 
     # Do Something with line 
    file.seek(0) 
    for line in file: 
     # Do Something with line, second time