[Tutor] Validating specific integer input [Was: Re: Converting a txt file to dictionary]

[boB Stepp]

On Sat, Aug 29, 2020 at 11:04 AM boB Stepp <robertvstepp at gmail.com> wrote:

> On Sat, Aug 29, 2020 at 2:38 AM nzbz xx <nzbzxx at gmail.com> wrote:

> > while data_validation(User_Decision):
> >     User_Decision = input(">")
>
> We have reached the end of the code you provided.  Have you run this
> code?  What happened?  Is it what you expected?
>
> Notice that you have never called your validation function, so it is
> doing nothing for you.  Where would the logical place to call it and
> validate user input?

Ugh.  I fell asleep at the switch here!  You *do* call your validation
function, but as you never explicitly return anything from that
function it is not doing what you expect.  Note that if you do not
return anything from a function explicitly it returns "None".

-- 
boB