<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def service(self):
        '''
        Instantiate service class with django http_request
        '''
        service_class = getattr(self, 'service_class')
        service = service_class(self.http_request)
        return service