文件对象中rb和r + b模式有什么区别？ [英] What is the difference between rb and r+b modes in file objects

问题描述

 ＃在窗口中工作..rb在Python中使用pickle模块并尝试不同的文件IO模式。 
与开放（pickle_f， 'RB'）作为fhand：
 OBJ =和pickle.load（fhand）
 
＃在Linux上工作。 R 
与开（pickle_f， 'R'）作为fhand：
 OBJ =和pickle.load（fhand）
 
＃适用于两个 R + b 
与开放（pickle_f 
 obj = pickle.load（fhand）
  

从来没有读过关于R + b模式的任何地方，却发现文档rb，我在Linux上得到了 EOFError 。 / code>模式，如果使用r，则在Windows上。我刚刚给了r + b模式一个镜头，它在两者上工作。

r + b模式？ rb和r + b有什么区别？为什么当其他人不工作时，它会工作？

用于阅读和写作模式。 b 是二进制的。
r + b 模式在读取或写入模式下打开二进制文件。
您可以阅读更多here 。

I am using pickle module in Python and trying different file IO modes:

# works on windows.. "rb"
with open(pickle_f, 'rb') as fhand:
        obj = pickle.load(fhand)

# works on linux.. "r"
with open(pickle_f, 'r') as fhand:
        obj = pickle.load(fhand)

# works on both "r+b"
with open(pickle_f, 'r+b') as fhand:
        obj = pickle.load(fhand)

I never read about "r+b" mode anywhere, but found mentioning about it in the documentation.

I am getting EOFError on Linux if I use "rb" mode and on Windows if "r" is used. I just gave "r+b" mode a shot and it's working on both.

What's "r+b" mode? What's the difference between "rb" and "r+b"? Why does it work when the others don't?

解决方案

r+ is used for reading, and writing mode. b is for binary. r+b mode is open the binary file in read or write mode.
You can read more here.

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