15. Introduction

16. Variables are Memory References

17. Reference Counting

18. Garbage Collection

19. Dynamic vs Static Typing

20. Variable Re-Assignment

21. Object Mutability

22. Function Arguments and Mutability

23. Shared References and Mutablility

24. Variable Equality

25. Everything is an Object

26. Python Optimizations: Interning

27. Python Optimizations: String Interning

28. Python Optimizations: Peephole