[Tutor] Why begin a function name with an underscore

[Jerry Zhang]

2012/8/28 Richard D. Moores <rdmoores at gmail.com>

> On Mon, Aug 27, 2012 at 6:33 PM, Japhy Bartlett <japhy at pearachute.com>
> wrote:
>
> > something like:
> >
> > def _validate_int(obj):
> >     """Raise an exception if obj is not an integer."""
> >     m = int(obj + 0)  # May raise TypeError.
> >     if obj != m:
> >         raise ValueError('expected an integer but got %r' % obj)
> >
> >
> > is a really awkward way to test if something's an integer, and checking
> > types in general is usually a sign of larger flaws in laying out useful
> > code.
>
> What the best way to test if something's an integer?
>

>>>a = 4
>>>isinstance(a, int)
True


>
> Dick Moores
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> To unsubscribe or change subscription options:
> http://mail.python.org/mailman/listinfo/tutor
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/tutor/attachments/20120828/dda949d1/attachment.html>