<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def write(self, data):
 """Writes json data to the output directory."""

        cnpj, data = data

        path = os.path.join(self.output, '%s.json' % cnpj)
        with open(path, 'w') as f:
            json.dump(data, f, encoding='utf-8')