At 12:20 PM 8/13/2005, Jonas Melian wrote:
>I would check 3 words at the starting of a line
>
>s=['foo','bar','qwe']
>
>if ln.startswith(s): (this is bad)
>
>what is the best way for making it?
Iterations over a list of this nature are most succinctly done using list
comprehensions.
if [l for l in s if ln.startswith(l)]:
Caveat: This will test every word in s. If s is a large list it would be
more efficient to break as soon as a match is found:
match = False
for l in s:
if ln.startswith(l):
match = True
break
The 3rd alternative is to use regular expression matching. That is beyond
the scope of this thread.
[snip]
Bob Gailer
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