tf3. Variable

import sysprint(sys.version)'''3.5.3 |Continuum Analytics, Inc.| (default, May 15 2017, 10:43:23) [MSC v.1900 64 bit (AMD64)]'''import tensorflow as tfstate = tf.Variable(0, name='counter')# 定义常量 oneone = tf.constant(1)# 定义加法步骤 (注: 此步并没有直接计算)new_value = tf.add(state, one)# 将 State 更新成 new_valueupdate = tf.assign(state, new_value)# 如果定义 Variable, 就一定要 initialize# init = tf.initialize_all_variables() # tf 马上就要废弃这种写法init = tf.global_variables_initializer()  # 替换成这样就好# 使用 Sessionwith tf.Session() as sess:    sess.run(init)    for _ in range(3):        sess.run(update)        print(sess.run(state))