Python comes with a collection of built-in data types that make common data-wrangling operations easy. Among them is the list, a simple but versatile collection type.With a Python list, you can ...

Python Notes: Lists vs. Arrays. ... In python, you can really make a list out of any data type. For physics, I can create a list of real numbers like this: And there you have a list.

One more note: Python is ruthlessly obedient. If you just spent 20 hours running a program and you save the file as temp_data.txt. Then later you run something and save it as temp_data.txt - done.