Two flavors of Python decorators:

• Function decorators
• Class decorators

Roles

Wrapper/Proxy objects

• Call proxies
• Interface proxies

Managing Functions and Classes

• Function managers
• Class managers

Python built-in decorators

• static, class method declarations
• property creation

Typical use cases

Function decorators

• call tracing, logging, profiling
• argument validity testing
• automatical lock aquiring/releasing

Class decorators

• trace, validate etc. attribute references made to an object
• proxy objects
• singleton classes