code: def set_country(self, country):
          
          country = _convert_to_charp(country)
          self._set_country_func(self.alpr_pointer, country)
docs: This sets the country for detecting license plates. For example,
          setting country to "us" for United States or "eu" for Europe.
  
          :param country: A unicode/ascii string (Python 2/3) or bytes array (Python 3)
          :return: None