def get_transport_cls(transport=None):
 if (transport not in _transport_cache):
  _transport_cache[transport] = resolve_transport(transport)
 return _transport_cache[transport]

def get_transport_cls ( transport = None ) : if ( transport not in _transport_cache ) : _transport_cache [ transport ] = resolve_transport ( transport ) return _transport_cache [ transport ]
get transport class by name .