human
Solve the following python programming problem given the following code:
def do_set_port_config(self, line) : 
    'set_port_config <peer> <target> <port> <key> <value>
        eg. set_port_config sw1 running LogicalSwitch7-Port2 admin-state down
        eg. set_port_config sw1 running LogicalSwitch7-Port2 no-forward false
        ' 
    def f(p, args) : 
        try : 
            (target, port, key, value) = args 
except : 
            print ('argument error') 
            print (args) 
            return 
o = p.get () 
        capable_switch_id = o.id 
        try : 
            capable_switch = ofc.OFCapableSwitchType (id = capable_switch_id, resources = ofc.OFCapableSwitchResourcesType (port = [ofc.OFPortType (resource_id = port, configuration = ofc.OFPortConfigurationType (** { 
                key : value, 
}))])) 
except TypeError : 
            print ('argument error') 
            return 
try : 
            p.edit_config (target, capable_switch) 
except Exception as e : 
            print (e) 
self._request (line, line) 

    
    

    Fix the buggy line: self._request (line, line)
assistant
#Here is Python program to fix the buggy line: self.

self._request (line, def f()