从Python中读取文件，奇怪的错误 [英] Reading from file in Python, weird error

问题描述

 f = open("‪C:\Users\aleed_000\Desktop\dis.txt","r")
 print (f.read())
 f.close()

任何人都可以解释为什么不能从名为dis.txt的文件中读取吗?当我尝试运行它时，它说错误，然后突出显示打开的括号.我不明白这是怎么回事.

Can anyone explain why this doesn't read from my file named dis.txt? When I tried to run it, it says error, and then highlights the open paren. I don't understand what is wrong.

推荐答案

使用原始字符串或通过在其前面加上另一个'\'来对每个'\'进行转义:

Use a raw string or escape each '\' by prefixing another '\' to it:

因为C:\Users\aleed_000\Desktop\dis.txt实际上是这样解释的:

because C:\Users\aleed_000\Desktop\dis.txt is actually interpreted like this:

>>> print ("‪C:\Users\aleed_000\Desktop\dis.txt") # '\a' gets escaped
C:\Usersleed_000\Desktop\dis.txt

原始字符串:

>>> print (r"‪C:\Users\aleed_000\Desktop\dis.txt")  #notice the r at the start
C:\Users\aleed_000\Desktop\dis.txt

每个'\'退出:

>>> print ("‪C:\\Users\\aleed_000\\Desktop\\dis.txt")
C:\Users\aleed_000\Desktop\dis.txt

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