split() off last substring

[Noah]

Python does not have a reverse split, but of course
you can still do it. The simplest way would be to split 
the string into all the fields and then just take the last field.
	a = 'aaa.bbb.ccc'
	f = a.split('.') # Split does not split on '.' by default, 
                       # so you have to tell it to split on '.'.
	c = a[-1]  # first field from the right. Negative indexes
                 # look weird to a newbie, but it's cool.

You could also do something like this:
	a = 'aaa.bbb.ccc'
	reverse (a)
	c,b = a.split('.', 1)
	reverse (c)
Writing the reverse() function (because Python doesn't
have one of those either :-) is left as an exercise to the reader...
Arguably, you might just write your own split routine
for the same amount of trouble and twice the speed.

Yours,
Noah

-----Original Message-----
From: python-list-admin at python.org
[mailto:python-list-admin at python.org]On Behalf Of bvdpoel at uniserve.com
Sent: Sunday, April 14, 2002 7:58 PM
To: python-list at python.org
Subject: split() off last substring



Can I tell split() to split off the LAST seqment? I guess I want
something like:

	a="aaa.bbb.ccc"
	b,c=a.rsplit(1)
	print b,c
	# "aaa.bbb", "ccc"

Thx.

-- 
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bvdpoel at uniserve.com
WWW:   http://users.uniserve.com/~bvdpoel