more TDD and SOLID principles

Well we had a successful meeting recently where we discussed SOLID principles and did a couple of small coding exercises together. I'd like to suggest we spend another meeting looking at the other two coding exercises in the set. They have other SOLID violations that need dealing with.

We'll start with a short recap of the SOLID principles, and then split into pairs to work on"TurnTicketDispenser" and "TelemetrySystem" from

https://github.com/emilybache/TDDwithMockObjectsAndDesignPrinciples/tree/master/TDDMicroExercises/python

The last meeting seemed to generate some interesting discussions, and I blogged about it a little too. I hope this one will be equally interesting.

Please bring a laptop if you can, otherwise you'll probably be able to pair with someone.