On Tue, Feb 5, 2013, at 01:38 PM, maiden129 wrote:
> Hi,
>
> I'm trying to create this program that counts the occurrences of each
> digit in a string which the user have to enter.
>
> Here is my code:
>
> s=input("Enter a string, eg(4856w23874): ")
> s=list(s)
>
> checkS=['0','1','2','3','4','5','6','7','8','9']
>
> for i in s:
> if i in checkS:
> t=s.count(i)
> if t>1:
> for k in range(1,t):
> s=s.remove(i)
> print(i, "occurs", t,"times.")
>
> elif t==1:
> print(i,"occurs 1 time.")
> else: pass
>
> but it keeps showing this error:
>
> t=s.count(i)
> AttributeError: 'NoneType' object has no attribute 'count'
s=s.remove(i) does not return a new list but modifies the list in
place.
So you probably just want
>>> s.remove(i)
Also, there are various inefficiencies in your code, but that is the
main issue with the AttributeError.
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