On Tue, Aug 28, 2012 at 12:13 AM, Jerry Zhang <[email protected]> wrote: > > > 2012/8/28 Richard D. Moores <[email protected]> > >> On Mon, Aug 27, 2012 at 6:33 PM, Japhy Bartlett <[email protected]> >> 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
>>> isinstance(3., int) False What if I wanted 3., 1234., etc. to be considered ints, as they are by _validate_int() ? Dick _______________________________________________ Tutor maillist - [email protected] To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
