tensorflow如何继续训练之前保存的模型实例

import numpy as np
import tensorflow as tf
x_data=np.random.rand(100).astype(np.float32) 
y_data=x_data*0.1+0.3
weight=tf.Variable(tf.random_uniform([1],-1.0,1.0),name="w")
biases=tf.Variable(tf.zeros([1]),name="b")
 
y=weight*x_data+biases
 
loss=tf.reduce_mean(tf.square(y-y_data)) #loss
optimizer=tf.train.GradientDescentOptimizer(0.5)
train=optimizer.minimize(loss)
 
 
init=tf.global_variables_initializer() 
sess=tf.Session()
sess.run(init)
saver=tf.train.Saver(max_to_keep=0)
for step in range(10):
  sess.run(train)
  saver.save(sess,"./save_mode",global_step=step) #保存
  print("当前进行：",step)

import numpy as np
 
import tensorflow as tf
 
sess=tf.Session()
saver=tf.train.import_meta_graph(r'save_mode-9.meta')
saver.restore(sess,tf.train.latest_checkpoint(r'./'))
 
print(sess.run("w:0"),sess.run("b:0"))
 
 
 
graph=tf.get_default_graph() 
weight=graph.get_tensor_by_name("w:0") 
biases=graph.get_tensor_by_name("b:0")
 
 
x_data=np.random.rand(100).astype(np.float32)
y_data=x_data*0.1+0.3
y=weight*x_data+biases
 
 
loss=tf.reduce_mean(tf.square(y-y_data))
optimizer=tf.train.GradientDescentOptimizer(0.5)
train=optimizer.minimize(loss)
saver=tf.train.Saver(max_to_keep=0)
for step in range(10):
  sess.run(train)
  saver.save(sess,r"./save_new_mode",global_step=step)
  print("当前进行：",step," ",sess.run(weight),sess.run(biases))

import numpy as np
import tensorflow as tf
x_data=np.random.rand(100).astype(np.float32)
 
y_data=x_data*0.1+0.3
weight=tf.Variable(tf.random_uniform([1],-1.0,1.0),name="w")
biases=tf.Variable(tf.zeros([1]),name="b")
y=weight*x_data+biases
 
loss=tf.reduce_mean(tf.square(y-y_data))
optimizer=tf.train.GradientDescentOptimizer(0.5)
train=optimizer.minimize(loss)
 
tf.add_to_collection("new_way",train)
init=tf.global_variables_initializer()
sess=tf.Session()
sess.run(init)
saver=tf.train.Saver(max_to_keep=0)
 
for step in range(10):
  sess.run(train)
  saver.save(sess,"./save_mode",global_step=step)
  print("当前进行：",step)

import numpy as np
import tensorflow as tf
sess=tf.Session()
saver=tf.train.import_meta_graph(r'save_mode-9.meta')
saver.restore(sess,tf.train.latest_checkpoint(r'./'))
print(sess.run("w:0"),sess.run("b:0"))
graph=tf.get_default_graph()
weight=graph.get_tensor_by_name("w:0")
biases=graph.get_tensor_by_name("b:0")
 
y=tf.get_collection("new_way")[0]
 
saver=tf.train.Saver(max_to_keep=0)
for step in range(10):
  sess.run(y)
  saver.save(sess,r"./save_new_mode",global_step=step)
  print("当前进行：",step," ",sess.run(weight),sess.run(biases))