human
Solve the following python programming problem given the following code:
def check_perm(self, role, method, callback = None) : 
    def decorator(view_func) : 
        if (not self._check_permission ([role], method, view_func)) : 
            if callable (callback) : 
                callback () 
else : 
                self._deny_hook () 
return view_func 
return role 

    
    

    Fix the buggy line: return role
assistant
#Here is Python code to fix the buggy line: return role
.

return def decorator(