[Tutor] __name__=='__main__'

[Michael Lewis]

Thanks. I did end up catching those, but to be fair to all the others, I
did ask that they ignore that issue as I was still working through it on my
own.

On Mon, Feb 20, 2012 at 4:55 PM, bob gailer <bgailer at gmail.com> wrote:

> No one else has caught another problem. I comment on it below:
>
>
> On 2/20/2012 6:46 PM, Michael Lewis wrote:
>
>> Hi everyone,
>>
>> I am having some trouble understanding how to use __name__== '__main__'.
>> Can you please give me some insight? Also, to use this, it needs to be
>> within a function? Do you typically just throw it in your very last
>> function or create a separate function just for this? I at first put it
>> outside and after all my functions but got the error below and then put it
>> inside my last function and the program ran. (side note, I have an error in
>> my return for MultiplyText that I am still trying to work out, so you can
>> ignore that part).
>>
>> Code:
>>
>> '''homework 5_1'''
>>
>> def MultiplyText(text, multiplier):
>>    '''Recieve a S. For digits in S, multiply by multiplier and return
>> updated S.'''
>>    for num in text:
>>        return ''.join(str(int(num) * multiplier) if num.isdigit() else
>> num for num in text)
>>
> This will fail, as multiplier is a string.
>
>
>>
>> def GetUserInput():
>>    '''Get S & multiplier. Test multiplier.isdigit(). Call
>> MultiplyText(text, multiplier)'''
>>    while True:
>>        text = raw_input('Enter some text: ')
>>        multiplier = raw_input('Enter a multiplier: ')
>>        try:
>>            multiplier.isdigit()
>>
> multiplier.isdigit() returns True or False. It will not raise an exception!
>
>             break
>>        except ValueError:
>>            continue
>>    new_text = MultiplyText(text, multiplier)
>>    return new_text
>>
>>    if __name == '__main__':
>>        print GetUserInput()
>>
>>  To fix both problems replace
> multiplier.isdigit()
> with
> multiplier = int(multiplier)
>
> --
> Bob Gailer
> 919-636-4239
> Chapel Hill NC
>
>


-- 
Michael J. Lewis

mjolewis at gmail.com
415.815.7257
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