This link is better:
https://docs.python.org/2/tutorial/errors.html


On Tue, Mar 17, 2015 at 1:09 AM, Dorian Hoxha <[email protected]>
wrote:

> Hi Marc. Try this:
>
> while True:
>     try:
>         x = int(raw_input("give a number:")
>         break
>     except (ValueError, KeyError):
>         print "x must be a number, while you entered %s" % x
> math.sqrt root = (x)
> print x
>
> See docs to learn more: https://docs.python.org/2/library/exceptions.html
> (python2.7)
>
>
>
> 2015-03-17 0:32 GMT+01:00 Marc Stevens <[email protected]>:
>
>> Hoe onderschep ik een error melding als bij de invoer van een getal als
>> een letter word ingegeven?
>> Bijv:
>>
>>
>> import math
>>
>> x=int(raw_input(“geef een getal in”))
>> wortel=math.sqrt(x)
>> print x
>>
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>>
>>
>
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