import re
# Only repeated numbers
answer = re.sub(r'(\d)\1+', r'\1', '12233322155552')
# Any repeated character
answer = re.sub(r'(.)\1+', r'\1', '12233322155552')
import re
# Only repeated numbers
answer = re.sub(r'(\d)\1+', r'\1', '12233322155552')
# Any repeated character
answer = re.sub(r'(.)\1+', r'\1', '12233322155552')