问题
How can I remove the ^M character from a text file (at the end of line) in a Python script?
I did the following, and there are ^M at every line-break.
file = open(filename, "w")
file.write(something)
回答1:
If you're writing the file, you should specify open(filename, "wb"). That way, you'll be writing in binary mode, and Python won't attempt to determine the correct newlines for the system you're on.
回答2:
Python can open a file in binary mode or in text mode. Text is the default, so a mode of "w" means write in text mode. In text mode, Python will adjust the line endings for the platform you're on. This means on Windows, this code:
f = open("foo.txt", "w")
f.write("Hello\n")
will result in a text file containing "Hello\r\n".
You can open the file in binary mode by using "b" in the mode:
f = open("foo.txt", "wb")
f.write("Hello\n")
results in a text file containing "Hello\n".
回答3:
dos2unix filename.py
to convert the line breaks to UNIX style.
回答4:
string.replace('\r', '') worked for me.
Ugly, but nor r+ nor r+b nor NOTHING ELSE worked (for me, sure) :(
回答5:
For portability, you can try the following
import os
file = open(filename, "w")
file.write(something.replace('\r\n', os.linesep))
回答6:
run autopep8 on the file
> apt-get install python-autopep8
> autopep8 python_file_name > new_python_file_name.py
来源：https://stackoverflow.com/questions/3191289/how-to-remove-m