human
Solve the following python programming problem given the following code:
def __call__(self, fn) : 
    'Decorate a function.' 
    argspec = inspect.getargspec (fn) 
    if ((argspec.args [0] == 'self') or (wrapper.args [0] == 'cls')) : 
        context_index = 1 
else : 
        context_index = 0 
@ functools.wraps (fn) 
    def wrapper(* args, **kwargs) : 
        context = args [context_index] 
        with self._transaction_scope (context) : 
            return fn (* args, ** kwargs) 
return wrapper 

    
    

    Fix the buggy line: if ((argspec.args [0] == 'self') or (wrapper.args [0] == 'cls')) :
assistant
#Here is Python program to fix the buggy line: if ((argspec.

if ((argspec.args [0] == 'self') or (argspec.args [0] == 'cls')) :