code: def latinize(value):
      
      def replace_double_character(match):
          search = ('Θ Χ Ψ '
                    'θ χ ψ '
                    'ΟΥ ΑΥ ΕΥ '
                    'Ου Αυ Ευ '
                    'ου αυ ευ').split()
          replace = ('TH CH PS '
                     'th ch ps '
                     'OU AU EU '
                     'Ou Au Eu '
                     'ou au eu').split()
          matched = match.group(0)
          if matched in search:
              return replace[search.index(matched)]
          return matched
  
      search = 'ΑΒΓΔΕΖΗΙΚΛΜΝΞΟΠΡΣΣΤΥΦΩαβγδεζηικλμνξοπρσςτυφω'
      replace = 'AVGDEZIIKLMNXOPRSSTUFOavgdeziiklmnxoprsstyfo'
  
      def replace_greek_character(match):
          matched = list(match.group(0))
          value = map(lambda l: replace[search.find(l)], matched)
          return ''.join(value)
  
      return re.sub(r'[{0}]+'.format(search),
                    replace_greek_character, re.sub(
          r'([ΘΧΨθχψ]+|ΟΥ|ΑΥ|ΕΥ|Ου|Αυ|Ευ|ου|αυ|ευ)',
          replace_double_character,
          remove_accents(value)))
docs: Converts (transliterates) greek letters to latin equivalents.