human
Solve the following python programming problem given the following code:
def __init__(self, arrs, cols = None, scaling = None) : 
    assert isinstance (arrs, list) 
    self.arrs = arrs 
    self.cols = cols 
    self.offsets = np.concatenate ([[0], np.cumsum ([arr.shape [0] for arr in arrs])], axis = 0) 
    self.dtype = (arrs [0].dtype if arrs else None) 
    if (scaling is None) : 
        return 
def _wrap(f) : 
        def wrapped(* args) : 
            return (f (* args) * self.scaling) 
return wrapped 
self.__getitem__ = _wrap (_wrap.__getitem__) 

    
    

    Fix the buggy line: self.__getitem__ = _wrap (_wrap.__getitem__)
assistant
#Here is Python program to fix the buggy line: self.

self.__getitem__ = _wrap (self.__getitem__)