Sources for self-learning

• http://learnpython.org/en/Functions

• http://learnpython.org/en/Generators/

• http://learnpython.org/en/Multiple_Function_Arguments

Type hints:

• Good tutorial from FastAPI author

• Tutorial bout typing

Additional tutorials:

• PythonGeekz article: Functions and arguments

• PythonGeekz article: Generator vs Iterators