Currently I want to split a line with all the matching special characters of the regex. As it is hard to explain, here are a few examples:
('.+abcd[0-9]+\\.mp3', 'Aabcd09.mp3')
-> [ 'A', '09' ]
.+
is a special expression of the regex and this is the match that I want [0-9]+
is another regex expression and I want what it matches too ('.+\\..+_[0-9]+\\.mp3', 'A.abcd_09.mp3')
-> [ 'A', 'abcd', '09' ]
.+
is the first special expression of the regex, it matches A
.+
is the second special expression of the regex, it matches abcd
[0-9]+
is the third special expression of the regex, it matches 09
Do you know how to achieve this? I didn't find anything.
Looks like you need a so called tokenizer/lexer to parse a regular expression first. It will allow you to split a base regex on sub-expressions. Then just apply these sub-expressions to the original string and print out matches.
You can try this:
import re
s = ['Aabcd09.mp3', 'A.abcd_09.mp3']
new_s = [re.findall('(?<=^)[a-zA-Z]|(?<=\.)[a-zA-Z]+(?=_)|\d+(?=\.mp3)', i) for i in s]
Output:
[['A', '09'], ['A', 'abcd', '09']]
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