Conditionals and Loops

beginner level · ~20 min · Module 5: Control Flow & Loops

Master conditional logic and loop iteration over ranges and sequences.

Learning objectives

Use if, elif, and else blocks with comparison (==, !=, >, <) and logical operators (and, or, not)
Iterate over sequences with for loops and range()
Control loop execution with break and continue

range(start, stop, step) generates integers up to (but excluding) stop.

# Print even numbers from 0 to 8
for i in range(0, 10, 2):
    print(i, end=" ")
print()

Write a loop that calculates the sum of all odd numbers from 1 to 9 inclusive and prints the total sum.