How to split the string if special character in string and keep the string in same python?

Question

For Example:

Input:

asdf****adec****awd**wer*

Needed Output:

['asdf','****','adec','****','awd','**','wer','*']

My code:

import re
a=input().strip()
s=re.findall('[*]|\w+', a)
print(s)

My output:

['asdf', '*', '*', '*', '*', 'adec', '*', '*', '*', '*', 'awd', '*', '*', 'wer', '*']

What mistake i made?? my special characters are printind seperately .

Is there any method without using modules??

Your ```\w``` has a quantifier ```+```. Try the same thing with your ```*``` group. — Chillie, Mar 14 '22 at 15:34

score 3 · Accepted Answer · answered Mar 14 '22 at 15:43

For me your task is better served by re.split rather than re.findall, consider that

import re
text = "asdf****adec****awd**wer*"
parts = re.split(r'(\*+)',text)
print(parts)

output

['asdf', '****', 'adec', '****', 'awd', '**', 'wer', '*', '']

Note that I used captured group to inform re.split to keep separators and also there is empty string in parts and it is considered part after last separators, if this is not acceptable then do

parts = [p for p in re.split(r'(\*+)',text) if p]

Note: I used so-called raw-string to make escaping easier, as * has special meaning if you want literal * you must espace it or put in [ and ]. See re docs for discussion of using raw-strings for re needs.

score 1 · Answer 2 · answered Mar 14 '22 at 15:34

1

You are matching only a single * character in your regex, you need to match all just like you do with \w by adding +. Is there any reason behind needing an answer without modules?

answered Mar 14 '22 at 15:34

matszwecja

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Actually I didn't need answer because of curious only I asked. Thank you :) – Heisenberg Mar 14 '22 at 15:38
It can be done, but regex allows much cleaner way. – matszwecja Mar 14 '22 at 15:40

score 0 · Answer 3 · answered Mar 14 '22 at 15:43

You can use a regex like (\*+) with re.split.

import re
test='asdf****adec****awd**wer*'

a=test.strip()
s=list(filter(None, re.split(r'([*]+)', a)))
print(s)

Will ouput:

['asdf', '****', 'adec', '****', 'awd', '**', 'wer', '*']

Which you can try online in this demo

Using filter to remove the empty string in the list

How to split the string if special character in string and keep the string in same python?

3 Answers3