Splitting a string with repeated characters into a list

Question

I am not well experienced with Regex but I have been reading a lot about it. Assume there\'s a string s = \'111234\' I want a list with the string split into

Answer 1

If you want to group all the repeated characters, then you can also use itertools.groupby, like this

from itertools import groupby
print ["".join(grp) for num, grp in groupby('111234')]
# ['111', '2', '3', '4']

If you want to make sure that you want only digits, then

print ["".join(grp) for num, grp in groupby('111aaa234') if num.isdigit()]
# ['111', '2', '3', '4']