import tensorflow as tf;    
import numpy as np;    
import matplotlib.pyplot as plt;    
    
a1 = tf.Variable(tf.random_normal(shape=[2,3], mean=0, stddev=1), name='a1')  
a2 = tf.Variable(tf.constant(1), name='a2')  
a3 = tf.Variable(tf.ones(shape=[2,3]), name='a3')  
  
with tf.Session() as sess:  
    sess.run(tf.initialize_all_variables())  
    print sess.run(a1)  
    print sess.run(a2)  
    print sess.run(a3) 
