CODEWITHSUNDEEP
pythonstring
user308827
user308827

Reputation: 22031

Splitting string with multiple delimiters in python

I have the following string in python:

foo = 'a_b_c'

How do I split the string into 2 parts: 'a_b' and 'c'? I.e, I want to split at the second '_'

str.split('_') splits into 3 parts: 'a', 'b' and 'c'.

Upvotes: 2

Views: 209

Answers (2)

Martijn Pieters
Martijn Pieters

Reputation: 1124808

Use the str.rsplit() method with a limit:

part1, part2 = foo.rsplit('_', 1)

str.rsplit() splits from the right-hand-side, and the limit (second argument) tells it to only split once.

Alternatively, use str.rpartition():

part1, delimiter, part2 = foo.rpartition('_')

This includes the delimiter as a return value.

Demo:

>>> foo = 'a_b_c'
>>> foo.rsplit('_', 1)
['a_b', 'c']
>>> foo.rpartition('_')
('a_b', '_', 'c')

Upvotes: 4

vks
vks

Reputation: 67988

import re
x = "a_b_c"
print re.split(r"_(?!.*_)",x)

You can do it through re.Here in re with the use of lookahead we state that split by _ after which there should not be _.

Upvotes: 2

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