TensorFlow打印输出tensor的值

import tensorflow as tf
 
# Build a graph.
a = tf.constant(5.0)
b = tf.constant(6.0)
c = a * b
# Launch the graph in a session.
sess = tf.Session()
# Evaluate the tensor `c`.
print(sess.run(c))

import tensorflow as tf
a = tf.constant(5.0)
b = tf.constant(6.0)
c = a * b
with tf.Session():
 # We can also use 'c.eval()' here.
 print(c.eval())

import tensorflow as tf

zeros = tf.zeros([3,3])

# 方法1
with tf.Session():
 print(zeros.eval())

# 方法2
sess = tf.Session()
print(sess.run(zeros))

import tensorflow as tf

ones=tf.Variable(tf.ones([3,3]))

# 方法1 InteractiveSession + initializer
inter_sess=tf.InteractiveSession()
ones.initializer.run()
print(inter_sess.run(ones))

# 方法2
inter_sess=tf.InteractiveSession()
tf.global_variables_initializer().run()
print(inter_sess.run(ones))

# 方法3 Session + global_variables_initializer
sess=tf.Session()
sess.run(tf.global_variables_initializer())
print(sess.run(ones))

# 方法4 with Session + global_variables_initializer
with tf.Session() as sess:
 sess.run(tf.global_variables_initializer())
 print(sess.run(ones))