Tensorflow One Hot Encoder ?

In Tensorflow, the tf.one_hot() is easy to use.

Here, the depth=4 and indices=[0, 3]

import tensorflow as tf
res = tf.one_hot(indices=[0, 3], depth=4)
with tf.Session() as sess:
    print sess.run(res)

Note that when you provide index=-1 it will get all zeros in your one-hot vector