Week2- sigmoid derivative TypeError: 'numpy.ndarray' object is not callable

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning
1

while computing sigmoid derivative function getting error as numpy.ndarray object is not callable

need help

1 Like
2

In line 20, you are missing the multiplication operator between the terms. Please remove references to your code in the post.

3

This is one of the classic cases in which python is different from math notation. If you say this in python:

a(1 - a)

You are saying that a is a function and you are invoking it with the argument (1 - a). If what you intended is to multiply those two operands, the syntax for that in python is:

a * (1 - a)

1 Like