Python Classroom notes 04/Jun/2026

Debugging code

• Lets debug the following code

num = int(input("Enter a number: "))

if num > 1:
    for i in range(2, num):
        if num % i == 0:
            print(num, "is not a prime number")
            break
    else:
        print(num, "is a prime number")
else:
    print(num, "is not a prime number")

• create a folder called as debugging and open visual studio code

mkdir debugging
cd debugging
code .

• Ensure python extension from microsoft is installed.
• create a file called main.py and copy the above code.
• To run the code python main.py

Debugging Terms

• Breakpoint
• Step over (Execute the current line)
• Variables
• Call Stack

• Debug console

• Simple program

num = 81

if num % 2 == 0:
    print("Even number")
else:
    print("Odd number")