Python regex split, integer of arbitrary length

Question

I'm trying to do a simple regex split in Python. The string is in the form of FooX where Foo is some string and X is an arbitrary integer. I have a feeling this should be really simple, but I can't quite get it to work.

On that note, can anyone recommend some good Regex reading materials?

Answer 1

You can't use split() since that has to consume some characters, but you can use normal matching to do it.

>>> import re
>>> r = re.compile(r'(\D+)(\d+)')
>>> r.match('abc444').groups()
('abc', '444')

Answer 2

Using groups:

import re

m=re.match('^(?P<first>[A-Za-z]+)(?P<second>[0-9]+)$',"Foo9")
print m.group('first')
print m.group('second')

Using search:

import re

s='Foo9'
m=re.search('(?<=\D)(?=\d)',s)
first=s[:m.start()]
second=s[m.end():]

print first, second