paddle数据Tensor

src = fluid.data(name="src", shape=[None, None], dtype="int64")
    src_sequence_length = fluid.data(name="src_sequence_length",shape=[None],dtype="int64")
    inputs = [src, src_sequence_length]
loader = fluid.io.DataLoader.from_generator(feed_list=inputs,capacity=10,
                                                iterable=True,use_double_buffer=True)

train_prog = fluid.Program()
startup_prog = fluid.Program()
with fluid.program_guard(train_prog, startup_prog):
    with fluid.unique_name.guard():
        pass