Django Preview.

Over the past week with my Django task, I find it necessary to go on with Python classes and functions review before exploring Django.

Prerequisite: Python Refresher (3-7 Days)

1. Functions:

   • Practice: Write a function that calculates factorial or filters lists.

   • Resource: Python Functions (W3Schools).

     • Solution Factorial:

       # A function that calculates factorials or filters lists.

       def factorial(n):

       if n < 0:

       return "Factorial is not defined for negative numbers."

       elif n == 0 or n == 1:

       return 1

       else:

       result = 1

       for i in range(2, n + 1):

       result *= i

       return result

       # Example usage:

       print(factorial(5)) # Output: 120

       print(factorial(0)) # Output: 1

       print(factorial(-3)) # Output: "Factorial is not defined for negative numbers."

     • OUTPUT:
       return factorial(data)

       NameError: name 'factorial' is not defined

       >>> %Run 'factorial(n).py'

       120

       1

       Factorial is not defined for negative numbers.

2. OOP:

   • Build a Student class with attributes (name, grade) and methods (update_grade).

   • Watch:

I have installed Django on my local machine and am beginning to explore the MVC implementation.