def grabContext(self):
        with self.lock_:
            if not self.contexts_:
                context = ExecutionContext.ExecutionContext(
                    dataManager = self.vdm_
                    )
            else:
                context = self.contexts_.pop()
        return context
Returns one last read byte to stream
dataset/ETHPy150Open ufora/ufora/ufora/FORA/python/Evaluator/LocalEvaluator.py/ComputationCache.grabContext--crossover with--dataset/ETHPy150Open denisenkom/pytds/pytds/tds.py/_TdsReader.unget_byte