Idiomatic portable way to strip line endings? (fwd)

[Lulu of the Lotus-Eaters]

m.bless at gmx.de (Martin Bless) wrote:
|To be on the safe side here's what I sometimes use:
|def removecrlf( line):
|    """Remove \r\n or \n from end of string."""
|    if line[-1:] == '\n':
|        if line[-2:-1] == '\r':
|            return line[:-2]
|        else:
|            return line[:-1]
|    else:
|        return line

This is probably not quite safe enough.  MacOS lines end with '\r'.
Adding that case is left as an exercise to readers (I like the regex
version that someone--Skip?--posted in this thread).

Yours, Lulu...