1 import tensorflow as tf
 2 import os
 3 os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
 4 
 5 '''建立一個常量op'''
 6 m1 = tf.constant([[3, 3]])
 7 '''建立一個常量op'''
 8 m2 = tf.constant([[2], [3]])
 9 '''建立一個矩陣乘法op，把m1,m2傳入'''
10 product = tf.matmul(m1, m2)
11 print(product)
12 
13 '''建立一個會話，用於執行矩陣乘法'''
14 sess = tf.Session()
 
15 result = sess.run(product)
16 print(result)
17 sess.close()
18 
19 '''通過with語句執行完成後，將自動關閉session'''
20 with tf.Session() as sess:
21     sess = tf.Session()
22     result = sess.run(product)
23     print(result)