PYTHON : NameError: name 'self' is not defined

Описание: PYTHON : NameError: name 'self' is not defined
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As promised, I have a secret feature that I want to reveal to you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

A quick introduction about me,
Hello, I am Delphi.
Allow me to support you in answering your questions.
PYTHON : NameError: name 'self' is not defined
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name : is PYTHON defined 'self' not NameError: