Further reading

• Functional Python Programming – Second Edition, by Steven F. Lott, published by Packt (https://www.packtpub.com/application-development/functional-python-programming-second-edition)
• Functional Programming in Python, by Sebastiaan Mathôt, published by Packt (https://www.packtpub.com/application-development/functional-programming-python-video)
• Python Type Checking, by Geir Arne Hjelle (https://realpython.com/python-type-checking/)