GraphQL is a query language for API(Application Programming Interface) and is an alternative to build APIs.
Iterable and Iterator are the Python Advanced Concept that most Python programmers use this concept knowingly or unknowingly in their program.
Logging is a very important tool in a programmer's toolbox that enables your code to record events as the program executes for later analysis.
PyJWT is a Python library that allows us to encode and decode JSON Web Token(JWT).
classmethod() is one of the built-in functions of Python that is bound to a class rather than its object. It simply transforms a method into a class method.