Introduction to Functional Programming in Python
https://www.dataquest.io/blog/introduction-functional-programming-python/
https://www.dataquest.io/blog/introduction-functional-programming-python/
Dataquest
Tutorial: Python Functions and Functional Programming
Learn about functions in Python and master the basics of functional Python programming in this in-depth tutorial for data scientists and programmers.
Python – Basics of Cryptography and API – Developers Area
http://devarea.com/python-cryptographic-api/#.WmuWEofRZnF
http://devarea.com/python-cryptographic-api/#.WmuWEofRZnF