[Tutor] while with function

[Don Arnold]

----- Original Message -----
From: <fleet@teachout.org>
To: "python tutor list" <tutor@python.org>
Sent: Saturday, November 16, 2002 9:46 PM
Subject: [Tutor] while with function


> I've written a function getnum()
>
> def getnum()
>    x=int(raw_input("get number: ")
>    return x
>
> I'm trying to control a while loop as follows:
>
> y=0
> while y==0:
>    y=getnum()
>    print y
>
> No matter what number I enter in response to getnum(), the while loop
> prints y then quits.  My assumption is that if the number I enter in
> response to getnum() is 0, y should be printed, and getnum() should be
> invoked again.  Any number other than 0 should cause the loop to quit.
>
> Where am I going wrong?
>
> - fleet -
>

I'm not sure that you are. It works fine for me:

>>> def getnum():
    x=int(raw_input('get number: '))
    return x

>>> y = 0
>>> while y == 0:
    y = getnum()
    print y

get number: 0
0
get number: 0
0
get number: 4
4
>>>

Can you cut + paste your python session so we can see exactly what's going
on?

Don