Python Classroom notes 31/Aug/2026

Conditional flow

• Generally program executes instructions one by one

• What kid knows

  • Addition (+)
  • Subtraction (-)
  • Multiplication (*)
  • integer Division
    • Quotient (//)
    • Remainder or modulus (%)
  • Division (/)
  • equals (==)
  • less than (<)
  • less than or equals <=
  • gt (>)
  • ge (‘>=)
  • assignment (=)

Scenario – 1

• we need to make this kid tell if the number is even or odd
• solution

number = 101
reminder = number % 2
if reminder == 0
    say even
else 
    say odd

Scenario – 2

• We need to make this kid tell if person is Underweight, Healthy Weight, Overweight, Obesity by looking at bmi
  

• Solution

#BMI = weight (kg) / [height (in) × 0.0254]²
weight = 75
height = 70 
bmi = weight / ((height * 0.0254) * (height * 0.0254))
if 0 < bmi <= 18.5
   say under weight
else if 18.5 < bmi <= 25
   say healthy weight
else if 25 < bmi <= 30
   say overweight
else
   say obesity

Exercise

• Take length and breadth and find if it is square or rectangle.
• Right angled triangle or not