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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_all_licenses(self):
 """Retrieve license type, key, installation date, etc."""

        data = self._execute_command('GET_ALL_LICENSES', 'RIB_INFO', 'read')
        d = {}
        for key, val in data['GET_ALL_LICENSES']['LICENSE'].items():
            if isinstance(val, dict):
                d[key] = data['GET_ALL_LICENSES']['LICENSE'][key]['VALUE']
        return d