Day 63 of #100DaysOfCode — Python Refresher Part 3 + Introduction to Apps in Django

Yesterday I introduced Django and covered some Python basics. Today I went deeper into Python, specifically functions and OOP, because I realized these are the real building blocks you need before Django starts making sense. I also took a first look at how Django organizes code into apps . Functions in Python A function in Python is defined using the def keyword. def greet ( name ): return f " Hello, { name } ! " print ( greet ( " Haris " )) # Hello, Haris! Simple enough. But Python functions have some powerful features worth knowing. Default Arguments You can assign a default value to parameters, making them optional when calling the function. def greet ( name , greeting = " Hello " ): return f " { greeting } , { name } ! " print ( greet ( " Haris " )) # Hello, Haris! print ( greet ( " Haris " , " Hey " )) # Hey, Haris! *args: Variable Positional Arguments When you don't know how many arguments will be passed, use *args . It collects all extra positional arguments into a tuple . def a