human
Solve the following python programming problem given the following code:
def __call__(self, test_func) : 
    from django.test import TransactionTestCase 
    if (isinstance (test_func, type) and issubclass (test_func, TransactionTestCase)) : 
        original_pre_setup = test_func._pre_setup 
        original_post_teardown = test_func._post_teardown 
        def _pre_setup(innerself) : 
            self.enable () 
            original_pre_setup (innerself) 
def _post_teardown(innerself) : 
            original_post_teardown (innerself) 
            self.disable () 
test_func._pre_setup = original_pre_setup 
        test_func._post_teardown = _post_teardown 
        return test_func 
else : 
        @ wraps (test_func) 
        def inner(* args, **kwargs) : 
            with self : 
                return test_func (* args, ** kwargs) 
return inner 

    
    

    Fix the buggy line: test_func._pre_setup = original_pre_setup
assistant
#Here is Python program to fix the buggy line: test_func.

test_func._pre_setup = _pre_setup