Foundations of Python and fixing NameErrors

First, for a complete beginner

This introductory tutorial gets you started with the basics.

https://chatgpt.com/share/68063082-c2d8-8012-8d45-fa674aa1c1ed

Next: a comprehensive briefing on Python

I'm going to defer to an AI friend for this, because these explanations are so well written with great examples. Copy and paste the code examples into a new cell to give them a try. Pick whichever section(s) you'd like to brush up on.

Python imports:
https://chatgpt.com/share/672f9f31-8114-8012-be09-29ef0d0140fb

Python functions including default arguments:
https://chatgpt.com/share/672f9f99-7060-8012-bfec-46d4cf77d672

Python strings, including slicing, split/join, replace and literals:
https://chatgpt.com/share/672fb526-0aa0-8012-9e00-ad1687c04518

Python f-strings including number and date formatting:
https://chatgpt.com/share/672fa125-0de0-8012-8e35-27918cbb481c

Python lists, dicts and sets, including the get() method:
https://chatgpt.com/share/672fa225-3f04-8012-91af-f9c95287da8d

Python files including modes, encoding, context managers, Path, glob.glob:
https://chatgpt.com/share/673b53b2-6d5c-8012-a344-221056c2f960

Python classes:
https://chatgpt.com/share/672fa07a-1014-8012-b2ea-6dc679552715

Pickling Python objects and converting to JSON:
https://chatgpt.com/share/673b553e-9d0c-8012-9919-f3bb5aa23e31

With this in mind - understanding NameErrors in Python

It's quite common to hit a NameError in python. With foundational knowledge, you should always feel equipped to debug a NameError and get to the bottom of it.

The most common reason if you're working in a Notebook is that you haven't executed all the cells in order, so the Kernel does not have something defined.

If you're unsure how to fix a NameError, please see this initial guide and this second guide with exercises, and work through them both until you have high confidence.

There's some repetition here, so feel free to skip it if you're already confident.

After this, a NameError should never give you problems again!