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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 _is_idempotent(self, output):
 """ Parses the output of the provisioning for changed and returns a bool. :param output: A string containing the output of the ansible run. :return: bool """


        # Remove blank lines to make regex matches easier
        output = re.sub(r'\n\s*\n*', '\n', output)

        # Look for any non-zero changed lines
        changed = re.search(r'(changed=[1-9][0-9]*)', output)

        if changed:
            # Not idempotent
            return False

        return True