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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 calculate_response(self, challenge, password):
 """Calculate response for the challenge-response authentication"""

        to_hash = (challenge + "-" + password).encode("UTF-16LE")
        hashed = hashlib.md5(to_hash).hexdigest()
        return "{0}-{1}".format(challenge, hashed)