如何将变量复制到张量流中的另一个图形 [英] how to copy variable to another graph in tensorflow

问题描述

我希望将tensorflow变量从旧图复制到新图，然后删除旧图并将新图设为默认值.下面是我的代码，但它引发了 AttributeError: 'Graph' object has no attribute 'variable1'.我是张量流的新手.谁能举个具体的例子?

I hope to copy tensorflow variable from an old graph to a new graph, then delete the old graph and make the new graph as default. Below is my code, but it raises an AttributeError: 'Graph' object has no attribute 'variable1'. I am new to tensorflow. Can any one give me a specific example?

import tensorflow as tf
import numpy as np

graph1 = tf.Graph()
with graph1.as_default():
    variable1 = tf.Variable(np.array([2.,-1.]), name='x1')
    initialize = tf.initialize_all_variables()

sess1 = tf.Session(graph=graph1)
sess1.run(initialize)
print('sess1:',variable1.eval(session=sess1))

graph2 = tf.Graph()
with graph2.as_default():
    variable2 = tf.contrib.copy_graph.copy_variable_to_graph(graph1.variable1, graph2)
sess2 = tf.Session(graph=graph2)
#I want to remove graph1 and sess1, and make graph2 and sess2 the default here.
print('sess2:', variable2.eval(session=sess2))

推荐答案

1. tf.initialize_all_variables() 已弃用.改用 tf.global_variables_initializer().

您不需要 graph1.variable1.只需传递 variable1.

You don't need graph1.variable1. Simply pass variable1.

您忘记在第二个会话中初始化变量:

You forgot to initialize variables in the second session:

initialize2 = tf.global_variables_initializer()
sess2=tf.Session(graph=graph2)
sess2.run(initialize2)

所以你的代码应该是这样的:

So your code should be like this:

import tensorflow as tf
import numpy as np

graph1 = tf.Graph()
with graph1.as_default():
    variable1 = tf.Variable(np.array([2.,-1.]), name='x1')
    initialize = tf.global_variables_initializer()
    sess1=tf.Session(graph=graph1)
    sess1.run(initialize)
    print('sess1:',variable1.eval(session=sess1))

graph2 = tf.Graph()
with graph2.as_default():
    variable2=tf.contrib.copy_graph.copy_variable_to_graph(variable1,graph2)
    initialize2 = tf.global_variables_initializer()
    sess2=tf.Session(graph=graph2)
    sess2.run(initialize2)
    #I want to remove graph1 and sess1, ande make graph2 and sess2 as default here.
    print('sess2:',variable2.eval(session=sess2))

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