Python Naming Conventions

Officially, variable names in Python can be any length and can consist of uppercase and lowercase letters (A-Z, a-z), digits (0-9), and the underscore character (_). An additional restriction is that, although a variable name can contain digits, the first character of a variable name can’t be a digit.

[danielmolina]

This is very useful, thankyou for the video. Best regards.

[SusanAmberBruce]

num_videos: "It's descriptive of the value it points to"? No.
perhaps descriptive of a context in use in the code