[Python] Tips And Tricks Programmers should know

Question

What are your best tips and tricks you use everyday for coding in Python? This question should help the beginners or the veterans :-) Please, give us some samples, lines code!!!!
Thank you.

Answer 1

# Comment heavily, you never know when you gonna need it again :)

Answer 2

Ultimate tip source: Google

Answer 3

I don't use Python, but Kuba is spot on. Nothing worse than coming back to a code you haven't touched in months/years and wondering to yourself "wtf was I thinking? What's going on here?"

Even further, what if someone else needs to use your code or if you're using someone elses code? It's a pain when someone doesn't document/comment and you have to spend time trying to figure out their logic/flow/train of thought from when they wrote the code.

Answer 4

pypi https://pypi.python.org/pypi
here you find all libraries you can install with pip