tf变量不会改变价值？

Question

我只想用.assign（）更改tf.Variable的值，但它总是打印“0”？

import tensorflow as tf

session = tf.Session()

var = tf.Variable(0, "myVar")

session.run(tf.initialize_all_variables())

var.assign(var + 1)
print session.run(var)

var.assign(var + 1)
print session.run(var)

编辑：这有效

import tensorflow as tf

session = tf.Session()

var = tf.Variable(0, "myVar")

session.run(tf.initialize_all_variables())

add = var.assign(var + 1)
print session.run(add)

print session.run(add)

Answer 1

assign仅创建更改变量的操作，您必须运行它：

import tensorflow as tf

session = tf.Session()

var = tf.Variable(0, "myVar")

session.run(tf.initialize_all_variables())

session.run(var.assign(var + 1))
print session.run(var)

session.run(var.assign(var + 1))
print session.run(var)