Tim Williams wrote:
> On 04/09/06, Dr. Pastor <[EMAIL PROTECTED]> 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
>> ---
>
> Something simple like the following might help,
>
>>>> def numtest():
> ... x=raw_input('\nType a number from 1 to 20')
> ... try:
> ... x=int(x)
> ... print x, "is a number between 1 & 20 "
> ... except:
> ... print x, "is not a number"
> ...
>>>> numtest() # enter 1
> 1 is a number between 1 & 20
>>>> numtest() # enter "f"
> f is not a number
>
> its not a final solution though, think input = -2, 5.5 or 21
>
One step further
try:
eval(x+'0')
....
--
Helmut Jarausch
Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany
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