[Tutor] How to check if user input is an integer

[Mark Lawrence]

On 29/03/2013 12:21, Shall, Sydney wrote:
> or;
> where x is the input == fiftypencecoins;
>
> return isinstance(x, int)
>
> will return True or False
>
> Then you can proceed as you wish.

If you enter invalid input you'll never get x to be an int so how can 
you test it with isinstance?

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Mark Lawrence