Ken D'Ambrosio wrote:
Hi, all. As a recovering Perl guy, I have to admit I don't quite
"get" the re module. For example, I'd like to do a few things (I'm
going to use phone numbers, 'cause that's what I'm currently dealing
with):
> 12345678900 -- How would I:
> - Get just the area code?
> - Get just the seven-digit number?
In Perl, I'd so something like m/^1(...)(.......)/; and then I'd have
that stuff in $1 and $2, respectively. But the Python stuff simply
isn't clicking for me. If anyone could supply concrete examples of
how to do the problem, above, that would be terrific.
Perl puts the captured text into variables as a side-effect, which, from
the Python point of view, is undesirable 'magic'. The Python way is for
the result to be returned like any normal function or method call:
match = re.search(r"^1(...)(.......)", phone_number)
# match is now a match object if successful or None if unsuccessful
if match:
area_code = match.group(1)
local_code = match.group(2)
# or:
# area_code, local_code = match.groups()
No magic involved!
(In this case simple string slicing would be simpler and faster.)
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