Tensorflow Code2

参考资料，莫烦的tensorflow讲解传送门，以下是对他讲解的总结。
代码2

# View more python tutorial on my Youtube and Youku channel!!!# Youtube video tutorial: https://www.youtube.com/channel/UCdyjiB5H8Pu7aDTNVXTTpcg# Youku video tutorial: http://i.youku.com/pythontutorial"""Please note, this code is only for python 3+. If you are using python 2+, please modify the code accordingly."""from __future__ import print_functionimport tensorflow as tfimport numpy as np# create datax_data = np.random.rand(100).astype(np.float32)y_data = x_data*0.1 + 0.3### create tensorflow structure start ###Weights = tf.Variable(tf.random_uniform([1], -1.0, 1.0))biases = tf.Variable(tf.zeros([1]))y = Weights*x_data + biasesloss = tf.reduce_mean(tf.square(y-y_data))optimizer = tf.train.GradientDescentOptimizer(0.5)train = optimizer.minimize(loss)init = tf.global_variables_initializer()### create tensorflow structure end ###sess = tf.Session()sess.run(init)for step in range(201):    sess.run(train)    if step % 20 == 0:        print(step, sess.run(Weights), sess.run(biases))

tensorflow的代码需要定义图结构
再init，采用方法如下

init = tf.global_variables_initializer()

之后建立一个Session，再对于Session.run(init)，再Session.run(train)才算是真正开始运行程序了。