A collection of design patterns implemented (by other people) in python

Current Patterns:

• 3-tier
• composite
• mvc
• decorator
• null
• facade
• observer
• abstract_factory
• factory_method
• pool
• adapter
• flyweight
• prototype
• borg
• proxy
• bridge
• graph_search
• state
• builder
• iterator
• strategy
• chain
• mediator
• template
• command
• memento
• visitor