Python，读取行尾两个字符[CR] [LF]

Question

For python in windows environment
I have a log file that uses [CR][LF] as end of the line indication.

But python will only read the [LF] char (\\x0A) as '\\n'
[CR] or'\\x0d' is somehow ignored. Len() of the read string is reduced by 1 due to this.

Is there a universal/local setting somewhere I can tell python to avoid doing that?

Answer 1

In Python 2, open the file in binary mode to avoid line ending translation:

with open(filename, 'rb') as f:

In Python 3, binary mode does a lot more than just disable line ending translation (it also means reading bytes instead of str ), so instead you use the newline keyword argument to disable line ending translation (by passing the empty string):

with open(filename, newline='') as f: