Hi all. There is a book (Creating a Neron Network). And I get an error, do I copy everything from it?

Question

Python

The book is called "Building a Neural Network" by Tariq Rashid. I have an example of a task on page 148.
Here is the code itself

- import matplotlib.pyplot
%matplotlib inline
matplotlib.pyplot.imshow(a, interpolation="nearest")

And here is the

error - NameError Traceback (most recent call last)
in
----> 1 matplotlib.pyplot.imshow( a, interpolation="nearest")

NameError: name 'a' is not defined

I am a beginner and a book for beginners. By Tariq Rashid. I installed python from the official site and top anaconda like that. I launch jupiter through anaconda. Sorry, I'm new and I'm learning on my own. Is it okay to ask questions like this?

Answer 1

Answer 2

Take a book about python first. Because learning "neglyadya" from non-working examples is a so-so idea.

Answer 3

Bug in Python 3.6 (Jupyter Notebook)?