input: Write a python function to print each character of a given string in a loop until a specified count is reached.
  assert print_chars_until_count("abcd", 10) is None
  assert print_chars_until_count("xyz", 5) is None
  assert print_chars_until_count("hello", 12) is None
output: def print_chars_until_count(s, count):
      i = 0
      while i < count:
          print(s[i % len(s)])
          i += 1