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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 build(self, format='qcow2', path='/tmp'):
        '''
        Build an image using Kiwi.

        :param format:
        :param path:
        :return:
        '''
        if kiwi is None:
            msg = 'Unable to build the image due to the missing dependencies: Kiwi module is not available.'
            log.error(msg)
            raise CommandExecutionError(msg)

        raise CommandExecutionError("Build is not yet implemented")