Tensorflow和Python中实现数组对应元素相减

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# Python原生写法 
v1 = [21, 34, 45]
v2 = [55, 25, 77]
 
v = list(map(lambda x: x[0]-x[1], zip(v2, v1)))
print(v)

#下面是用tensorflow的写法
v1 = [21, 34, 45]
v2 = [55, 25, 77]
add=tf.subtract(v2,v1)
with tf.Session() as sess:
    print(sess.run(add))

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FR: 徐海涛（hunk Xu）
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