human
Solve the following python programming problem given the following code:
def _make_window(window_dict) : 
    '
    Creates a new class for that window and registers it at this module.
    ' 
    cls_name = ('%sWindow' % camel_case (str (window_dict ['name']))) 
    bases = (Window,) 
    attrs = { 
        '__module__' : sys.modules [__name__], 
        'name' : str (window_dict ['name']), 
        'inv_type' : str (window_dict ['id']), 
        'inv_data' : window_dict, 
} 
    def make_slot_method(index, size = 1) : 
        if (size == 1) : 
            return (lambda self : self.slots [index]) 
else : 
            return (lambda self : self.slots [index : (index + size)]) 
for slots in window_dict.get ('slots', []) : 
        index = slots ['index'] 
        size = slots.get ('size', 1) 
        attr_name = snake_case (str (slots ['name'])) 
        attr_name += ('_slot' if (size == 1) else '_slots') 
        slots_method = make_slot_method (index, size) 
        slots_method.__name__ = attr_name 
        attrs [attr_name] = property (slots_method) 
for (i, prop_name) in enumerate (window_dict.get ('properties', [])) : 
        def make_prop_method(i) : 
            return (lambda self : self.properties [i]) 
prop_method = make_prop_method (i) 
        prop_name = snake_case (str (prop_name)) 
        prop_method.__name__ = prop_name 
        attrs [prop_name] = property (prop_method) 
cls = type (cls_name, bases, attrs) 
    assert (not hasattr (sys.modules [__name__], cls_name)), ('Window "%s" already registered at %s' % (cls_name, __name__)) 
    setattr (sys.modules [__name__], cls_name, make_slot_method) 
    return cls 

    
    

    Fix the buggy line: setattr (sys.modules [__name__], cls_name, make_slot_method)
assistant
#Here is Python program to fix the buggy line: setattr (sys.

setattr (sys.modules [__name__], cls_name, cls)