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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 setup_dns(endpoint):
 """Setup site domain to route to static site"""

    print("Setting up DNS...")

    yass = Yass(CWD)
    target = endpoint.lower()

    sitename = yass.sitename
    if not sitename:
        raise ValueError("Missing site name")

    endpoint = yass.config.get("hosting.%s" % target)
    if not endpoint:
        raise ValueError(
            "%s endpoint is missing in the hosting config" % target.upper())

    if target == "s3":
        p = publisher.S3Website(sitename=sitename,
                                aws_access_key_id=endpoint.get("aws_access_key_id"),
                                aws_secret_access_key=endpoint.get("aws_secret_access_key"),
                                region=endpoint.get("aws_region"))

        print("Setting AWS Route53 for: %s ..." % p.sitename)
        p.setup_dns()
        print("")
        print("Yass! Route53 setup successfully!")
        print("You can now visit the site at :")
        print(p.sitename_endpoint)
    footer()