Python Program to Print Hollow Right Angle Triangle Star Pattern

This python program generates hollow right angle triangle pattern made of stars up to n lines.

In this python example, we first read number of row in the hollow right angle triangle pattern from user using built-in function input(). And then we generate hollow right angle triangle pattern using python's for loop.

Python Source Code: Hollow Right Angle Triangle Pattern

# Hollow Right Angle Triangle Pattern Using Stars

row = int(input('Enter number of rows required: '))

for i in range(row):
    for j in range(i+1):
        if j==0 or j==i or i==row-1:
            print('*',end=" ")
        else:
            print(" ", end=" ")
    print()

In this program print() only is used to bring control to new lines.

Output

Enter number of rows required: 8

* 
* * 
*   * 
*     * 
*       * 
*         * 
*           * 
* * * * * * * *