[Tutor] iterating in the same line
alan.gauld at freenet.co.uk
Sun Aug 14 09:24:02 CEST 2005
I don't understand what you are trying to do at all.
The subject line and your code snippets don't seem
to match up.
> Subject: [Tutor] iterating in the same line
>I would check 3 words at the starting of a line
> if ln.startswith(s): (this is bad)
Why is it bad -- other than it doesn't work!
I think you mean something like
for st in s:
if line.startswith(st): do something
> if max(map(ln.startswith,s)):
But this does something completely different!
This selects the 'biggest' line that starts with anything in s.
then if the biggest line is not null does something?
> reduce(lambda m,n:m or n, map(ln.startswith, s))
And this does something different again.
It uses map to create a list containg ln if ln startswith
one of the strings in s, then tries to reduce that list
to one element(which it already is!) by 'or'ing the elements.
I can't even begin to guess from that what it is you are
actually trying to do.
Can you give us more explanation and maybe some sample data?
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