nah using global inside function is more confusing than just using uppercase for constants and you can use them without declaring global in all functions.

because THOSE ARE CONSTANTS!

Errrr... ':)

bro, why yelling

**I've now realized constants are conventionally upper-cased.
I understand your reasoning better now.

This is cool for when you don't have internet to convert metrics; otherwise it looks a bit confusing and even painful to the eye with all the capitals.
Nonetheless, I am sure this makes a lot of sense in your head so congrats on the solution!

using "global", is more read nicely

Uppercase is the norm for global variables

nice solution, but hards to read with all upper case .....

Hah!

this one should be quicker than '\n'.join(). nice try!

Yep - this was my solution as well!