Pattern Printing Programs

Pattern Printing Programs in Python

Pattern programs use nested loops to print shapes with stars or numbers — a favourite for practice and exams.

Python Program

# Right triangle of stars
for i in range(1, 6):
    print("* " * i)

print()

# Number pyramid
n = 4
for i in range(1, n + 1):
    print(" " * (n - i) + "* " * i)

print()

# Number triangle
for i in range(1, 5):
    for j in range(1, i + 1):
        print(j, end=" ")
    print()

Expected Output

How it Works

• The outer loop controls rows; the inner loop controls items per row.
• Spaces before stars create alignment (pyramids).

Summary

• Pattern programs use nested loops to print shapes with stars or numbers — a favourite for practice and exams.