import tensorflow as tf

data1 = tf.constant(25,dtype='int16')
data2 = tf.Variable(3,name='data2')
print(data1)
print(data2)
# sess = tf.Session()
# init = tf.global_variables_initializer()
# sess.run(init)
# print(sess.run(data2))
sess = tf.Session()         #创建session会话
init = tf.global_variables_initializer()    #变量需要初始化
with sess:                  #自动关闭session
    sess.run(init)              #运行init
    print(sess.run(data2))