[Tutor] Input checking [letters or numbers]

[Panagiotis Atmatzidis]

On 12/23/05, Panagiotis Atmatzidis <p.atmatzidis at gmail.com> wrote:
> Hello Dany :-)
>
> On 12/23/05, Danny Yoo <dyoo at hkn.eecs.berkeley.edu> wrote:
[...]
> >
> >
> > Hello Bob and Panagiotis,
> >
> > It might be good to make this number-reading thing a function, just to
> > make it easier to reuse (and test!) it.  Let's call this input_number()
> > for the moment.
> >
> > #######################################################
> > def input_number(prompt):
> >     """Reads an integer from the next line of input."""
> >     while 1:
> >         x = raw_input(prompt)
> >         if x.isdigit():
> >             return int(x)
> >         else:
> >             print 'Boo'
> > #######################################################
[...]
> > I added one more behavior so that input_number continues to ask until it's
> > satisified by a number.  Hope this helps!
>
> Yes, it really helps a lot. Now I can proceed with my script!!
[...]

Another newbe question! I use "while True: " to evaluate an
expression, I see that you used while 1: .. what's the diffrence if
any?!
--
Panagiotis