Keywords: whatsnew22

## Contents

- 1 Introduction
- 2 PEPs 252 and 253: Type and Class Changes
  - 2.1 Old and New Classes
  - 2.2 Descriptors
  - 2.3 Multiple Inheritance: The Diamond Rule
  - 2.4 Attribute Access
  - 2.5 Related Links
- 3 PEP 234: Iterators
- 4 PEP 255: Simple Generators
- 5 PEP 237: Unifying Long Integers and Integers
- 6 PEP 238: Changing the Division Operator
- 7 Unicode Changes
- 8 PEP 227: Nested Scopes
- 9 New and Improved Modules
- 10 Interpreter Changes and Fixes
- 11 Other Changes and Fixes
- 12 Acknowledgements
- About this document ...