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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _maybe_cast_indexer(self, key):
 """ If we have a float key and are not a floating index, then try to cast to an int if equivalent. """


        if is_float(key) and not self.is_floating():
            try:
                ckey = int(key)
                if ckey == key:
                    key = ckey
            except (OverflowError, ValueError, TypeError):
                pass
        return key