code: def command_chars(string, vargs):
      
      try:
          ipa_string = IPAString(
              unicode_string=string,
              ignore=vargs["ignore"],
              single_char_parsing=vargs["single_char_parsing"]
          )
          for c in ipa_string:
              print(u"'%s'\t%s (%s)" % (c.unicode_repr, c.name, unicode_to_hex(c.unicode_repr)))
      except ValueError as exc:
          print_error(str(exc))
docs: Print a list of all IPA characters in the given string.
  
      It will print the Unicode representation, the full IPA name,
      and the Unicode "U+"-prefixed hexadecimal codepoint representation
      of each IPA character.
  
      :param str string: the string to act upon
      :param dict vargs: the command line arguments