Python Program to Print the Pascal's triangle for n number of rows given by the user

When it is required to print the pascal’s triangle for a specific number of rows, where the number is entered by the user, a simple ‘for’ loop is used.

Below is the demonstration of the same −


 Live Demo

from math import factorial

input = int(input("Enter the number of rows..."))
for i in range(input):
   for j in range(input-i+1):

      print(end=" ")

   for j in range(i+1):
      print(factorial(i)//(factorial(j)*factorial(i-j)), end=" ")



Enter the number of rows...6
     1 1
    1 2 1
   1 3 3 1
  1 4 6 4 1
1 5 10 10 5 1


  • The required packages are imported.

  • The number of rows is taken as input from the user.

  • The number is iterated over in the form of a nested loop.

  • The factorial method is used to print the pascal’s triangle on the console.