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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 krb5_unparse_principal_name(name):
 """Split a Kerberos principal name into parts Returns: * ('host', hostname, realm) for a host principal * (servicename, hostname, realm) for a service principal * (None, username, realm) for a user principal :param text name: Kerberos principal name :return: (service, host, realm) or (None, username, realm) """

    prefix, realm = name.split(u'@')
    if u'/' in prefix:
        service, host = prefix.rsplit(u'/', 1)
        return service, host, realm
    else:
        return None, prefix, realm