I'm gonna get a smartphone! And I'm gonna run Python on it!

I get by with my company mobile and serious WiFi at home from Virgin: 120Mbs which is fast for the UK. Although our two teenage kids young adults have had (and lost) smartphones for years, I have not succumbed until yesterday when I put in an order for the Nexus 5.

Hell, I haven't worked out if I will have to carry two mobiles or what carrier deal to go for, but I have been watching the market for a while and think I have made the right choice of phone.

From present use of gadgets I think I want to be able to:

1. Read books.
2. Do admin tasks for Rosetta Code whilst out and about.
3. Capture code notes and snippets. I often write Python snippets with the core of an idea that I later expand. I am not thinking of doing nights of development on the Nexus 5, but I do  want to be able to edit and run some code, or, cut-n-paste fifty lines of code from the web and run it on my phone to answer a Stack Overflow question.
4. Use that pedometer function of Android KitKat as I sit for too long :-)
5. Create a WiFi hotspot in the car for those long journeys with family where everyone has either a laptop and/or tablet; and the teenagers would rather use daddy's WiFi than expend their pay-as-you-go credit.

I have a script I wrote on my PC that uses wget to download pages from Rosetta Code then a Python program to search for new pages and display them on a browser as well as prompt me if the page should be deleted and the user blocked if they are spamming. The Python creates a script for iMacros which then deletes pages/blocks users as requested.
It is a lot of functionality to duplicate on Android, but I'll probably give it a go sometime. If you know of anything that could help/substitute for things like wget and iMacros that works on Android then please add to the comments, but I should stress that I haven't started looking myself as yet.