docs: def sanitize_qualifiers(repos=None, followers=None, language=None):
      '''
      qualifiers = c repos:+42 followers:+1000 language:
      params = {'q': 'tom repos:>42 followers:>1000'}
      '''
      qualifiers = ''
  
      if repos:
          qualifiers += 'repos:{0} '.format(repos)
          qualifiers = re.sub(r"([+])([=a-zA-Z0-9]+)", r">\2", qualifiers)
          qualifiers = re.sub(r"([-])([=a-zA-Z0-9]+)", r"<\2", qualifiers)
  
      if followers:
          qualifiers += 'followers:{0} '.format(followers)
          qualifiers = re.sub(r"([+])([=a-zA-Z0-9]+)", r">\2", qualifiers)
          qualifiers = re.sub(r"([-])([=a-zA-Z0-9]+)", r"<\2", qualifiers)
  
      try:
          if language in ALLOWED_LANGUAGES and not language == '':
              qualifiers += 'language:{0} '.format(language)
          elif language == '':
              qualifiers += ''
          else:
              raise AllowedLanguagesException
      except AllowedLanguagesException as e:
          print(e)
  
      return qualifiers