A file iteration question/problem
Arnaud Delobelle
arnodel at googlemail.com
Tue Apr 8 01:38:32 EDT 2008
On Apr 7, 11:40 pm, John Nagle <na... at animats.com> wrote:
> tinn... at isbd.co.uk wrote:
> > I want to iterate through the lines of a file in a recursive function
> > so I can't use:-
>
> > f = open(listfile, 'r')
> > for ln in f:
>
> > because when the function calls itself it won't see any more lines in
> > the file. E.g. more fully I want to do somthing like:-
>
> > def recfun(f)
> > while True:
> > str = readline(f)
> > if (str == "")
> > break;
> > #
> > # do various tests
> > #
> > if <something>:
> > recfun(f)
>
> Don't do that; Python doesn't have tail recursion and you'll hit the
> stack limit.
>
> John Nagle
This function is not tail recursive (the recursive call is in a loop).
--
Arnaud
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