关于#python#的name error 'weight' 未被定义如何解决

Question

本人通过python实现梯度下降公式的代码时遇到问题如下，输入代码：
<< y_hat = weight*X + bias
<< loss = y_hat - y
<< derivative_weight = X.T.dot(loss)/len(X)
<<derivative_bias = sum(loss)*1/len(X)
结果输出name error：‘weight’ is not defined
还求高人指点

Answer 1

weight是权重值，一般设置为0.05即可：
weight = 0.05