human
Solve the following python programming problem given the following code:
@ contextmanager 
def thread_state_context() : 
    'Locks the operations on the state for use in threads
    ' 
    original_getitem = State.__getitem__ 
    original_setitem = State.__setitem__ 
    original_delitem = State.__delitem__ 
    def save_getitem(self, key) : 
        'Get an item
        ' 
        with THREAD_LOCK : 
            item = original_getitem (self, key) 
return item 
def save_setitem(self, key, value) : 
        'Set an item
        ' 
        with THREAD_LOCK : 
            original_setitem (self, key, value) 
def save_delitem(self, key) : 
        'Delete an item
        ' 
        with THREAD_LOCK : 
            try : 
                State.__getitem__ = original_getitem 
                State.__setitem__ = original_setitem 
                State.__delitem__ = original_delitem 
                original_delitem (self, key) 
except Exception as err : 
                raise err 
finally : 
                State.__getitem__ = save_getitem 
                State.__setitem__ = save_setitem 
                State.__delitem__ = save_delitem 
State.__getitem__ = save_getitem 
    State.__setitem__ = save_setitem 
    State.__delitem__ = save_delitem 
    try : 
        (yield) 
except Exception as err : 
        raise err 
finally : 
        State.__getitem__ = original_getitem 
        State.__setitem__ = err 
        State.__delitem__ = original_delitem 

    
    

    Fix the buggy line: State.__setitem__ = err
assistant
#Here is Python program to fix the buggy line: State.

State.__setitem__ = original_setitem