Dr. Pastor wrote:
> In the following code I would like to ascertain
> that x has/is a number. What the simplest TEST should be?
> (Could not find good example yet.)
> ---
> x=raw_input('\nType a number from 1 to 20')
> if TEST :
> Do_A
> else:
> Do_B
> ---
> Thanks for any guidance.
x=raw_input('\nType a number from 1 to 20')
try:
x = int(x)
if x<1 or x>20: raise ValueError()
except ValueError:
Do_B
else:
Do_A
If you want to distinguish between the two error cases (not a number vs
number not in [1,20]), handle the second one as "Do_C" instead of
raising ValueError.
HTH,
George
--
http://mail.python.org/mailman/listinfo/python-list
