CODEWITHSUNDEEP
pythonstringsplitpython-re
Petra
Petra

Reputation: 375

How to use re.split() to split at instances of two characters?

I have strings that I want to split of the form:

s = '|0-1|0.0|0.0+-0.0|0.8+-0.8|0.0+-0.0|-2.4+-2.4|5.9|'

I want to split it at every instance of | and +-, but NOT - on its own. I'm trying to use re.split() to do so because the regular split() function doesn't take multiple delimiters, but I can't figure out the regular expressions syntax.

I tried the following:

splitted = re.split(r'\| | (+-)', s)

as it says that parentheses can be used to match the expression in the parentheses, but I get the error:

error: nothing to repeat

Upvotes: 0

Views: 344

Answers (2)

baduker
baduker

Reputation: 20052

Just for fun, you could do that without regex.

Here's how:

s = '|0-1|0.0|0.0+-0.0|0.8+-0.8|0.0+-0.0|-2.4+-2.4|5.9|'
print([j for i in s.split("|") for j in i.split("+-") if j])

Output:

['0-1', '0.0', '0.0', '0.0', '0.8', '0.8', '0.0', '0.0', '-2.4', '2.4', '5.9']

Upvotes: 1

Vinam
Vinam

Reputation: 66

You can do

import re
s = '|0-1|0.0|0.0+-0.0|0.8+-0.8|0.0+-0.0|-2.4+-2.4|5.9|'
re.split("\||\+\-", s)

The second | should not contain any whitespace btw. Also note that the returned list will contain empty strings because of s starting and ending with |.

Upvotes: 1

Related Questions