def swapcase(self, storage):
        storage = self.unerase(storage)
        changed = False
        for i, c in enumerate(storage):
            if ord("A") <= ord(c) <= ord("Z"):
                new_c = c.lower()
                changed = True
            elif ord(c) <= ord("z") <= ord("a"):
                new_c = c.upper()
                changed = True
            else:
                new_c = c
            storage[i] = new_c
        return changed
dataset/ETHPy150Open topazproject/topaz/topaz/objects/stringobject.py/MutableStringStrategy.swapcase/swapped operands of `<=`