Regex to find triple characters

[bfallert]

import re
matches =[match.group() for match in re.finditer(r"(.)\1{1,}", "AAAbbcDDDEDGGGG")]
print(matches)

Output:
['AAA', 'bb', 'DDD', 'GGGG']

Thank you, but this expression still allows matching consecutive characters other than exactly 3. Doubles, quads or others beside triples should not be found.