def CreatePolicy(Alice, LabelStr):
    """Create A Policy. Returns umbral.keys.UmbralPublicKey"""
    # The Policy Label is a bytestring that categorizes the data that Alicia wants to share.
    label = LabelStr.encode()

    # Alicia can create the public key associated to the policy label,
    # even before creating any associated policy.
    policy_pubkey = Alice.get_policy_pubkey_from_label(label)

    print("The policy public key for "
          "label '{}' is {}".format(label.decode("utf-8"), policy_pubkey.to_bytes().hex()))

    return policy_pubkey