star.py

rows = 6

# It is used to print the space
k = 2 * rows - 2
# Outer loop to print number of rows
for i in range(0, rows):
    # Inner loop is used to print number of space
    for j in range(0, k):
        print(end=" ")
    # Decrement in k after each iteration
    k = k - 1
    # This inner loop is used to print stars
    for j in range(0, i + 1):
        print("* ", end="")
    print("")

# Downward triangle Pyramid
# It is used to print the space
k = rows - 2
# Output for downward triangle pyramid
for i in range(rows, -1, -1):
    # inner loop will print the spaces
    for j in range(k, 0, -1):
        print(end=" ")
    # Increment in k after each iteration
    k = k + 1
    # This inner loop will print number of stars
    for j in range(0, i + 1):
        print("* ", end="")
    print("")