Using python to write text files with DOS line endings on linux

Question

I want to write text files with DOS/Windows line endings '\r\n' using python running on Linux. It seems to me that there must be a better way than manually putting a '\r\n' at the end of every line or using a line ending conversion utility. Ideally I would like to be able to do something like assign to os.linesep the separator that I want to use when writing the file. Or specify the line separator when I open the file.

Answer 1

For Python 2.6 and later, the open function in the io module has an optional newline parameter that lets you specify which newlines you want to use.

For example:

import io with io.open('tmpfile', 'w', newline='\r\n') as f:     f.write(u'foo\nbar\nbaz\n') 

will create a file that contains this:

foo\r\n bar\r\n baz\r\n