Recently, I have been studying Turing's "Introduction to Deep Learning - Theory and Implementation Based on Python" in my spare time.
After learning the MNIST data set in Chapter 3, I typed the code according to the book and got an error when I ran it. It turned out to be because the source code was provided in the book. The source code download URL is: http://www.ituring.com.cn/book/1921
There are three resources when you open the website, and you can also download electronic books there.
