Decorators in Python

Decorators dynamically alter the functionality of a function, method, or class without having to directly use subclasses or change the source code of the function being decorated. Using decorators in Python also ensures that your code is DRY(Don't Repeat Yourself). Decorators have several use cases such as:

Authorization in Python frameworks such as Flask and Django

Logging

Measuring execution time

Synchronization

[srinivashiremath]

Implemented decorator so easily using this video

[rajeshgopinathan]

amazing video and information .. presentation is different

[gowrammahm]

Python decorators r easy if u understand and vice versa if u don't