# time : 2019/4/8 
#!/usr/bin/python
# -*- coding: UTF-8 -*-
import tensorflow as tf
import numpy as np

# create data
x_data = np.random.rand(100).astype(np.float32)
y_data = x_data*0.1 + 0.3

# create tensorflow structure start #
Weight = tf.Variable(tf.random_uniform([1], -1.0, 1.0))
biases = tf .Variable(tf.zeros([1]))

y = Weight * x_data + biases

loss = tf.reduce_mean(tf.square(y-y_data))
optimizer = tf.train.GradientDescentOptimizer(0.5)
train = optimizer.minimize(loss)
# create tensorflow structure start #

sess = tf.Session()
init = tf.global_variables_initializer()
sess.run(init)

for step in range(201):
    sess.run(train)
    if step % 20 == 0:
        print(step, sess.run(Weight), sess.run(biases))

