[Biopython-dev] text files and mac

[Tiago Antão]

Hi,

I am writing this email to ask for some advice (many thanks in advance
for any suggestion).
I was contacted regarding a bug on the genepop parser on mac (I have
no Mac, so I really do not have how to test, neither experience
developing there).

The parser opens a text file but, on the mac, sometimes the file is CR
terminated (is this from old Mac versions? I would expect Mac OS X to
be text a-la unix - ie CR-LF).
Well, I've found a recommendation to open files with the U modifier (
http://www.gossamer-threads.com/lists/python/dev/755361 ).

My question is simple (actually two questions):
1. What is the best practice to open text files in terms of modifiers for open?
2. How common is this format on Mac? Is it old stuff or still used? I
have around 20% Mac users and this was never a reported problem.

Many thanks,
Tiago

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