tensorflow API: tf.nn.dropout

import tensorflow as tf
x = [1.0, 0.5, 0.75, 0.25, 0.2, 0.8, 0.4, 0.6]
dropout = tf.nn.dropout(x, 0.5)
with tf.Session() as sess:
    print(sess.run(dropout))

[2.  1.  1.5 0.  0.4 1.6 0.8 0. ]