Closures in Python

This is supportive material for my talk Closures in Python presented at PyCon SK 2017 in Bratislava, Slovakia.

Watch now on youtube:

The aim of talk was to introduce closures concent in general to the audience.

Presentation includes examples also from other languages like Java, C# or Javascript.

Slides

Check out pycon2017-closures.pdf in root folder.

Folder structure

python - contains examples in python
js - contains examples in javascript / node.js
csharp - contains examples in C#, .NET (Core)
java - contains examples in Java 8

Agenda

Introduction, Bottom-Up explanation
Pool - usage of python, java, c#, javascript
Question - example with list of functions (10,10,10...10)
Scopes (local vs global variables)
Functions as first class citizen
Lambdas
Classes (vs Functions)
Simple example of closure
Where is closed variable stored, GC discussion
More closures examples (counter, average)
Closures with functions
Decorators, combined decorators
Closures vs Classes
Answer to initial question
Answer in C#, Java
Answer in Javascript
Q&A

Support

In case of questions do not hesitate to contact me. Feel free to send patch or pull request.