def writable(self):
        return (len(self.buffer) and
                self.throttle.sendable() / 2 > self.throttle.fragment_size)
:rtype: int
dataset/ETHPy150Open jcrocholl/throxy/throxy.py/ThrottleSender.writable--crossover with--dataset/ETHPy150Open kamyu104/LeetCode/Python/zigzag-iterator.py/ZigzagIterator.next