Tensorflow 对象不支持张量流中的项赋值

在简单的程序之前，我不能做一个简单的任务，并得到以下错误

import tensorflow as tf

x_1= tf.constant([1, 2, 3])
x_1= tf.reshape(x_1, shape= (1, 3))
x_2= tf.constant([2, 3, 4])
x_2= tf.reshape(x_2, shape= (1, 3))
x_3= tf.constant([3, 4, 5])
x_3= tf.reshape(x_3, shape= (1, 3))
x= tf.concat((x_1, x_2, x_3), axis=0)

for i in range(0, 3):
    x[i, :]= x[i, :]+ 1

init= tf.global_variables_initializer()

with tf.Session() as sess:
   y= sess.run(x)

我得到以下错误：

TypeError:“Tensor”对象不支持项分配

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索引无法访问/修改张量对象

下面是修复的代码：

import tensorflow as tf

x_1 = tf.constant([1, 2, 3])
x_1 = tf.reshape(x_1, shape=(1, 3))
x_2 = tf.constant([2, 3, 4])
x_2 = tf.reshape(x_2, shape=(1, 3))
x_3 = tf.constant([3, 4, 5])
x_3 = tf.reshape(x_3, shape=(1, 3))
x = tf.concat((x_1, x_2, x_3), axis=0)

x = tf.add(x, tf.constant(1, shape=x.shape))

with tf.Session() as sess:
    sess.run(tf.global_variables_initializer())
    y = sess.run(x)
    print(y)