Chapter 3: Object Model and Binding

This chapter explores Python's object model in depth, covering how names bind to objects, CPython implementation details, numeric and string internals, and practical patterns for writing Pythonic code.

3.1 Language Foundations

• CPython vs Language Spec
• Key Terms Glossary
• Everything is an Object
• Methods and Attributes
• Python Execution Model

3.2 Python's Object Model

• Names vs Objects
• Identity Type Value
• PyObject Structure
• Immutable vs Mutable

3.3 Names, Binding, and Assignment

• Formal Binding Model
• Assignment Process
• Assignment vs Mutation
• Identity and Equality
• Unpacking and Destructuring
• Namespace Hierarchies
• Namespace Implementation
• Complex Binding Scenarios

3.4 CPython Implementation Details

• Impl vs Guarantees
• Integer Interning
• String Interning
• Object Interning

3.5 Advanced Numeric Internals

• int Logical Operations
• int Two's Complement
• float Machine Precision
• float Numerical Stability

3.6 Advanced String Internals

• str Unpacking
• str Python vs C

3.7 Practical Implications

• Pythonic Patterns
• Anti-Patterns and Pitfalls
• Namespace Internals
• Code Quality
• Examples and Interview