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Showing content from https://mail.python.org/pipermail/python-dev/2017-August/148848.html below:

[Python-Dev] __signature__ for PySide ready

[Python-Dev] __signature__ for PySide readyJelle Zijlstra jelle.zijlstra at gmail.com
Fri Aug 18 12:55:26 EDT 2017
2017-08-18 18:20 GMT+02:00 Yury Selivanov <yselivanov.ml at gmail.com>:

> Hi Christian,
>
> On Fri, Aug 18, 2017 at 4:41 AM, Christian Tismer <tismer at stackless.com>
> wrote:
> > Hi friends,
> >
> > in the last months, I have developed signature support for
> > PySide. The module creates the same signatures as are known
> > for plain Python functions.
> >
> > As a non-trivial addition, the module also handles multiple
> > signatures as a list. I consider this extension to PySide
> > as quite essential and actually more important as for Python
> > itself, because type info is rather crucial for PySide.
> >
> > Initially, I wrote this as a pure Python 3 extension.
> > Then I was "asked" to port this to Python 2 too, which was
> > quite hairy to do. I'm not sure if I should have done that.
> >
> > Before I publish this module, I want to ask:
> > --------------------------------------------
> >
> > Is it a bad idea to support signatures in Python 2 as well?
>
> There's a backport of signature API to Python 2.  Although last time I
> checked it was fairly outdated.
>
> I wrote a backport earlier this year:
https://pypi.python.org/pypi/inspect2.


> > Do I introduce a feature that should not exist in Python 2?
> > Or is it fine to do so?
> >
> > Please let me know your opinion, I am happy with any result.
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> jelle.zijlstra%40gmail.com
>
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