ValueError: Variable /var3 already exists, disallowed. Did you mean to set reuse=True or reuse=tf.AU

雨点打透心脏的1/2处 2022-02-01 14:09 161阅读 0赞

### 原代码： ###

# 22 scope (name_scope/variable_scope)
    from __future__ import print_function
    import tensorflow as tf
    with tf.variable_scope("a_variable_scope") as scope:
        initializer = tf.constant_initializer(value=3)
        var3 = tf.get_variable(name='var3', shape=[1], dtype=tf.float32, initializer=initializer)
        var4 = tf.Variable(name='var4', initial_value=[4], dtype=tf.float32)
        var4_reuse = tf.Variable(name='var4', initial_value=[4], dtype=tf.float32)
        var3_reuse = tf.get_variable(name='var3',)
    
    with tf.Session() as sess:
        # tf.initialize_all_variables() no long valid from
        # 2017-03-02 if using tensorflow >= 0.12
        if int((tf.__version__).split('.')[1]) < 12 and int((tf.__version__).split('.')[0]) < 1:
            init = tf.initialize_all_variables()
        else:
            init = tf.global_variables_initializer()
        sess.run(init)
        print(var3.name)            # a_variable_scope/var3:0
        print(sess.run(var3))       # [ 3.]
        print(var4.name)            # a_variable_scope/var4:0
        print(sess.run(var4))       # [ 4.]
        print(var4_reuse.name)      # a_variable_scope/var4_1:0
        print(sess.run(var4_reuse)) # [ 4.]
        print(var3_reuse.name)      # a_variable_scope/var3:0
        print(sess.run(var3_reuse)) # [ 3.]

原因是因为多次运行上述程序或者是用`get_variable()`得到的variable被重复调用。

### 解决方法 ###

##### 方法一： #####

在代码开头加上 ：`tf.reset_default_graph()` 每次运行都清除variable等（不推荐使用）

##### 方法二： #####

在代码开头加上 ：`tf.get_variable_scope().reuse_variables()` 表示可以重复使用`get_variable()`得到的variable。

##### 方法三： #####

在`with tf.variable_scope("a_variable_scope") as scope:`后面加上`scope.reuse_variables()`（类似于方法二）

ValueError: Variable /var3 already exists, disallowed. Did you mean to set reuse=True or reuse=tf.AU

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关 iOS-Unknown receiver 'WKWebView'; did you mean 'UIWebView'?

相关 mapstruct集合转换: No property named “xxx“ exists in source parameter(s). Did you mean “coursewareName“?

相关 Vue3配置Cannot find module ‘vite‘. Did you mean to set the ‘moduleResolution‘ option to ‘node‘,

相关 IDEA的npm报错Local package.json exists, but node_modules missing, did you mean to install?

相关 Warning: Invalid DOM property `for`. Did you mean `htmlFor`?

相关 Synchronous operations are disallowed. Call ReadAsync or set AllowSynchronousIO to true instead.

相关 ValueError: Variable rnnlm/multi_rnn_cell/cell_0/basic_lstm_cell/kernel already exists, disallowed.

相关 ValueError: Variable /var3 already exists, disallowed. Did you mean to set reuse=True or reuse=tf.AU

相关 ValueError: Variable in_hidden/weights already exists, disallowed. Did you mean to set reuse=True or

相关 /var/run/*.pid already exist. Daemon already running?