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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 dict_to_pyxb(rp_dict):
 """Convert dict to ReplicationPolicy PyXB object. Args: rp_dict: Native Python structure representing a Replication Policy. Example:: { 'allowed': True, 'num': 3, 'blockedMemberNode': {'urn:node:NODE1', 'urn:node:NODE2', 'urn:node:NODE3'}, 'preferredMemberNode': {'urn:node:NODE4', 'urn:node:NODE5'}, } Returns: ReplicationPolicy PyXB object. """

    rp_pyxb = d1_common.types.dataoneTypes.replicationPolicy()
    rp_pyxb.replicationAllowed = rp_dict['allowed']
    rp_pyxb.numberReplicas = rp_dict['num']
    rp_pyxb.blockedMemberNode = rp_dict['block']
    rp_pyxb.preferredMemberNode = rp_dict['pref']
    normalize(rp_pyxb)
    return rp_pyxb