code: def is_pangram(string):
      
      return is_full_string(string) and set(SPACES_RE.sub('', string)).issuperset(letters_set)
docs: Checks if the string is a pangram (https://en.wikipedia.org/wiki/Pangram).
  
      :param string: String to check.
      :type string: str
      :return: True if the string is a pangram, False otherwise.