Xplaceholder = tf.placeholder(trX.dtype, shape=trX.shape, name='Xplaceholder')
Xvar = tf.get_variable('XVariable', shape=trX.shape, dtype=trX.dtype, initializer=tf.zeros_initializer())
Yplaceholder = tf.placeholder(trY.dtype, shape=trY.shape, name='Yplaceholder')
Yvar = tf.get_variable('YVariable', shape=trY.shape, dtype=trY.dtype, initializer=tf.zeros_initializer())
Xassign = Xvar.assign(Xplaceholder)
Yassign = Yvar.assign(Yplaceholder)
ready_to_batch = tf.train.slice_input_producer([Xvar, Yvar])
X, Y = tf.train.shuffle_batch ...