tensorflow 获取checkpoint中的变量列表实例

脚本专栏 2024/11/29 佚名

3 2 1

方式1：静态获取,通过直接解析checkpoint文件获取变量名及变量值

通过

reader = tf.train.NewCheckpointReader(model_path)

或者通过：

from tensorflow.python import pywrap_tensorflow
reader = pywrap_tensorflow.NewCheckpointReader(model_path)

代码：

model_path = "./checkpoints/model.ckpt-75000"
## 下面两个reader作用等价
#reader = pywrap_tensorflow.NewCheckpointReader(model_path)
reader = tf.train.NewCheckpointReader(model_path)
 
## 用reader获取变量字典,key是变量名,value是变量的shape
var_to_shape_map = reader.get_variable_to_shape_map()
for var_name in var_to_shape_map.keys():
 #用reader获取变量值
 var_value = reader.get_tensor(var_name)
 
 print("var_name",var_name)
 print("var_value",var_value)

方式2：动态获取,先加载checkpoint模型,然后用graph.get_tensor_by_name()获取变量值

代码 (注意：要先在脚本中构建model中对应的变量及scope):

 model_path = "./checkpoints/model.ckpt-75000"
 config = tf.ConfigProto()
 config.gpu_options.allow_growth = True
 with tf.Session(config=config) as sess:
  ## 获取待加载的变量列表
  trainable_vars = tf.trainable_variables()
  g_vars = tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES,scope="generator")
  d_vars = tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES,scope='discriminator')
  flow_vars = tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES,scope='flow_net')
  var_restore = g_vars + d_vars
 
  ## 仅加载目标变量
  loader = tf.train.Saver(var_restore)
  loader.restore(sess,model_path)
 
  ## 显示加载的变量值
  graph = tf.get_default_graph()
  for var in var_restore:
   tensor = graph.get_tensor_by_name(var.name)
   print("=======变量名=======",tensor)
   print("-------变量值-------",sess.run(tensor))

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tensorflow,checkpoint,变量列表