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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 sync_one(self, aws_syncr, amazon, key):
 """Make sure this key is as defined"""

        key_info = amazon.kms.key_info(key.name, key.location)
        if not key_info:
            amazon.kms.create_key(key.name, key.description, key.location, key.grant, key.policy.document)
        else:
            amazon.kms.modify_key(key_info, key.name, key.description, key.location, key.grant, key.policy.document)