Collection of design patterns in Python. Software design pattern is a general, reusable solution to a commonly occurring problem within a given context in software design.

1. Singleton Pattern
   
2. Lazy instantiation in Singleton Pattern
   
3. Singleton with metaclass
   
4. Factory Pattern
   
5. Abstract factory Pattern
   
6. Facade Pattern
   
7. Proxy Pattern
   
8. Adapter Pattern
   
9. Observer Pattern
   
10. Observer Pattern in Publisher and Subscriber example
    
11. Command Pattern
    
12. Command Pattern Example
    
13. Command Pattern Example_1
    
14. Template Pattern
    
15. State Pattern
    
16. Model View Controller