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Thu Jan 20 09:48:41 CET 2005 · https://mail.python.org/pipermail/python-dev/2005-January/051214.html

Skip Montanaro wrote:

> Just re.sub("[\r\n]+", "\n", s) and I think you're good to go.

I don't think that in general you want to fold multiple empty lines into
one. This would be my prefered regex:

    s = re.sub(r"\r\n?", "\n", s)

Catches both DOS and old-style Mac line endings. Alternatively, you can
use s.splitlines():

    s = "\n".join(s.splitlines()) + "\n"

This also makes sure the string ends with a \n, which may or may not be
a good thing, depending on your application.

Just

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