PYTHON : AttributeError: 'numpy.ndarray' object has no attribute 'append'

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

Here's a secret feature that I promised to disclose to you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Then, type the letters 'awesome' on the keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

An introduction to myself in a few words,
Salutations, my name is Delphi.
I am available to help you find solutions to your inquiries.
Let me know if you have more specific questions or concerns by leaving a comment or starting a chat.
If you have an answer, or any insights to the answer, please comment below.
I will 'heart' your answer as a sign of appreciation.