<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def is_ready(self, service_name):
 """ Determine if a registered service is ready, by checking its 'required_data'. A 'required_data' item can be any mapping type, and is considered ready if `bool(item)` evaluates as True. """

        service = self.get_service(service_name)
        reqs = service.get('required_data', [])
        return all(bool(req) for req in reqs)