[Tutor] finding digit in string

[Prasad, Ramit]

Mark Lawrence wrote:
> On 08/10/2012 17:43, Benjamin Fishbein wrote:
> > I figured out a solution for the question I asked on here.
> > To find the next digit (0-9) in a string, I use:
> > text.find("0" or "1" or "2", etc.......)
> > But is there a more elegant way to do this? The way I found uses a lot of typing.
> >
> 
> How about something like:-
> 
> for ch in text:
>      if ch.isdigit():
>          doSomething(ch)
> 
> or:-
> 
> for ch in text:
>      if '0' <= ch <= '9':
>          doSomething(ch)

I am not sure that will work very well with Unicode numbers. I would 
assume (you know what they say about assuming) that str.isdigit() 
works better with international characters/numbers.

>>> '1'.isdigit()
True
>>> '23'.isdigit()
True
>>> '23a'.isdigit()
False

for ch in text:
    if ch.isdigit():
        # do something

> 
> 
> If you want to use the offset for any reason use enumerate:-
> 
> for i, ch in enumerate(text):
>      etc.
> 
> --
> Cheers.
> 
> Mark Lawrence.

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