def __init__(self):
        toLookup = threadLocalStackPushClassFor_(type(self))
        if ThreadLocalStackPushable.classToStackMap not in toLookup:
            ThreadLocalStackPushable.classToStackMap[toLookup] = ThreadLocalStack()
dataset/ETHPy150Open ufora/ufora/ufora/util/ThreadLocalStack.py/ThreadLocalStackPushable.__init__/swapped operands of `not in`