[issue24739] allow argparse.FileType to accept newline argument

[Mitar]

Mitar <mmitar at gmail.com> added the comment:

I think the issue is that it is hard to subclass it. Ideally, call to open would be made through a new _open method which would then call it, and one could easily subclass that method if/when needed.

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nosy: +mitar

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue24739>
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