code: def get_password(self, service, username):
          
          init_part = self._keyring.get_password(service, username)
          if init_part:
              parts = [init_part]
              i = 1
              while True:
                  next_part = self._keyring.get_password(
                      service,
                      '%s{{part_%d}}' % (username, i))
                  if next_part:
                      parts.append(next_part)
                      i += 1
                  else:
                      break
              return ''.join(parts)
          return None
docs: Get password of the username for the service