human
Solve the following python programming problem given the following code:
def _set_visibility(self, action, * args) : 
    '
    Checks for the existence `attr` on a given `panel` and
    performs `action` if found
    ' 
    def _set_visibility(obj, attrs) : 
        for attr in attrs : 
            if hasattr (obj, attr) : 
                instance = getattr (obj, attr) 
                getattr (instance, action) () 
                instance.Layout () 
for panel in [self, self.head_panel, action.foot_panel, self.config_panel] : 
        _set_visibility (panel, args) 

    
    

    Fix the buggy line: for panel in [self, self.head_panel, action.foot_panel, self.config_panel] :
assistant
#Here is Python program to fix the buggy line: for panel in [self, self.

for panel in [self, self.head_panel, self.foot_panel, self.config_panel] :