(self)
Initialise and open a new a client (self) for performing IP address
           lookups against a database or service.
Initialise and open a new a client (self) for performing IP address
           lookups against a database or service.
Initialise and open a new a client ( self ) for performing IP address lookups against a database or service .
def __enter__(self):
        """Initialise and open a new a client (self) for performing IP address
           lookups against a database or service.
        """
        raise NotImplementedError
def __enter__ ( self ) : raise NotImplementedError