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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 convertDatetime(t):
 """ Converts the specified datetime object into its appropriate protocol value. This is the number of milliseconds from the epoch. """

    epoch = datetime.datetime.utcfromtimestamp(0)
    delta = t - epoch
    millis = delta.total_seconds() * 1000
    return int(millis)