To get indice of all occurences:
S = input() # Source String k = input() # String to be searchedimport repattern = re.compile(k)r = pattern.search(S)if not r: print("(-1, -1)")while r: print("({0}, {1})".format(r.start(), r.end() - 1)) r = pattern.search(S,r.start() + 1)