Number diamond generator

number-diamomd.py

# Number of rows
rows = 4

# Upper Triangle
k = 2 * rows - 2
num = 0
# Outer loop to handle number of rows
for i in range(rows):

    # Inner loop to handle number of spaces
    for j in range(k):
        print(end="  ")
    k = k - 1

    # Inner loop to print patterns
    for j in range(0, i + 1):
        num += 1
        print(num, end="   ")
    print("")


# Lower Triangle
k = rows - 2

# Outer loop to handle number of rows
for i in range(rows, -1, -1):

    # Inner loop to handle number of spaces
    for j in range(k, 0, -1):
        print(end="  ")
    k = k + 1

    # Inner loop to print patterns
    for j in range(0, i + 1):
        num += 1
        print(num, end="  ")
    print("")

    
### ----- Output ----- ###
#            1   
#          2   3
#        4   5   6
#      7   8   9   10
#    11  12  13  14  15
#      16  17  18  19
#        20  21  22
#          23  24
#            25