human
Solve the following python programming problem given the following code:
def add_module_opts(parser) : 
    parser.add_argument ('--transport', metavar = 'TRANSPORT', help = 'register using the given transport, default %(default)s.', default = DEFAULT_TRANSPORT) 
    parser.add_argument ('--facilitator-pubkey', metavar = 'FILENAME', help = 'encrypt registrations to the given PEM-formatted public key file (default built-in).') 
    old_parse = old_parse.parse_args 
    def parse_args(namespace) : 
        options.transport = namespace.transport 
        options.facilitator_pubkey = namespace.facilitator_pubkey 
        return namespace 
parser.parse_args = (lambda * a, **kw : parse_args (old_parse (* a, ** kw))) 

    
    

    Fix the buggy line: old_parse = old_parse.parse_args
assistant
#Here is Python program to fix the buggy line: old_parse = old_parse.

old_parse = parser.parse_args