Fresh newbie learning python

Im having trouble finding an error in this code ive written for a simple calculator. The menu shows correctly but i recieve an error when attempting to select and operation. Ive only just begun teaching myself about programming. Any tips or help is appreciated.
I also apologize for the small text, the website only allows one photo uploads for new users.

I can’t really see what’s going on. You can format code in the forum (look here) or - even better - you can embed run-able code using

As you probably know, FCC doesn’t teach Python (yet).

Forum thread: Let’s all build a comprehensive interactive Python curriculum together
If you would like to be part of the planning and development of the Python curriculum, please subscribe to this GitHub Issue

Top recommended free resources

-Learn Python The Hard Way(currently 2.7 but 3.6 coming)
-Dive Into Python(2.7)
-Dive Into Python 3(3.6)