尝试运行此回归算法时，我一直收到无效的语法

Question

我无法正常工作。我不知道出什么问题了。它一直告诉我m_loss_slope行中有一个无效的语法

b1 = random.randn()
m1 = random.randn()
learning_rate = 0.001
epochs = 10000
N = float(len(points))
print(b1)
print(m1)

for n in range(0, epochs):

for i in range(0, len(points)):
    x = points[i, 0]
    y = points[i, 1]
    b_loss_slope += (-2/N) * (y - ((m * x) + b)
    m_loss_slope += (-2/N) * (x * (y - ((m * x) + b)))
    print(b_loss_slope)
    print(m_loss_slope)

b1 = b1 - (learning_rate * b_loss_slope)
m1 = m1 - (learning_rate * b_loss_slope)


print(b1)
print(m1)

这是我不断收到的错误：

 m_loss_slope += (-2/N) * (x * (y - ((m * x) + b)))
               ^
SyntaxError: invalid syntax

帮助将不胜感激 谢谢

Answer 1

该行：

b_loss_slope += (-2/N) * (y - ((m * x) + b)

在末尾需要一个额外的右括号)：

b_loss_slope += (-2/N) * (y - ((m * x) + b))