Python Program to Print Left Pascals Number Triangle

Write a Python program to print the left pascals number triangle using for loop.

rows = int(input("Enter Left Pascals Number Triangle Pattern Rows = "))

print("====Left Pascals Number Triangle Pattern====")

for i in range(1, rows + 1):
    for j in range(i, rows):
        print(end = '  ')
    for k in range(1, i + 1):
        print(k, end = ' ')
    print()

for i in range(rows, 0, -1):
    for j in range(i, rows + 1):
        print(end = '  ')
    for k in range(1, i):
        print(k, end = ' ')
    print()
Python Program to Print Left Pascals Number Triangle

This Python example prints the left pascals number triangle using a while loop.

rows = int(input("Enter Left Pascals Number Triangle Pattern Rows = "))

print("====Left Pascals Number Triangle Pattern====")
i = 1
while(i <= rows):

    j = i
    while(j < rows):
        print(end = '  ')
        j = j + 1

    k = 1
    while(k <= i):
        print(k, end = ' ')
        k = k + 1
    print()
    i = i + 1

i = rows
while(i >= 1):
    j = i
    while(j <= rows):
        print(end = '  ')
        j = j + 1

    k = 1
    while(k < i):
        print(k, end = ' ')
        k = k + 1
    print()
    i = i - 1
Enter Left Pascals Number Triangle Pattern Rows = 9
====Left Pascals Number Triangle Pattern====
                1 
              1 2 
            1 2 3 
          1 2 3 4 
        1 2 3 4 5 
      1 2 3 4 5 6 
    1 2 3 4 5 6 7 
  1 2 3 4 5 6 7 8 
1 2 3 4 5 6 7 8 9 
  1 2 3 4 5 6 7 8 
    1 2 3 4 5 6 7 
      1 2 3 4 5 6 
        1 2 3 4 5 
          1 2 3 4 
            1 2 3 
              1 2 
                1