Programs for printing pyramid patterns in Python

Taking advantage of the for loop and range function in Python, we can draw a variety of pyramid structures. The key to the approach is designing the appropriate for loop which will leave both vertical and horizontal space for the position of the symbol we choose for drawing the pyramid structure.

Pattern 1: Right-Angled Triangle

We draw a right angle based pattern where each row contains an increasing number of stars ?

def pyramid(p):
    for m in range(0, p):
        for n in range(0, m+1):
            print("* ", end="")
        print()

p = 10
pyramid(p)

The output of the above code is ?

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

Pattern 2: Right-Aligned Triangle

We make a 180 degree rotation to the above pattern by adding leading spaces ?

def pyramid(p):
    X = 2*p - 2
    for m in range(0, p):
        for n in range(0, X):
            print(end=" ")
        X = X - 2
        for n in range(0, m+1):
            print("* ", end="")
        print()

p = 10
pyramid(p)

The output of the above code is ?

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

Pattern 3: Isosceles Triangle

In this case we draw a triangle shape of type isosceles. Both the sides of the triangle are of equal length ?

n = 0
r = 12

for m in range(1, r+1):
    for gap in range(1, (r-m)+1):
        print(end=" ")
    while n != (2*m-1):
        print("* ", end="")
        n = n + 1
    n = 0
    print()

The output of the above code is ?

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

Pattern 4: Equilateral Triangle

Now we draw a case of triangle in which all the three sides are equal. Also called equilateral triangle ?

length = 12
k = (2 * length) - 2

for p in range(0, length):
    for n in range(0, k):
        print(end=" ")
    k = k - 1
    for n in range(0, p + 1):
        print("@", end=' ')
    print()

The output of the above code is ?

                       @ 
                      @ @ 
                     @ @ @ 
                    @ @ @ @ 
                   @ @ @ @ @ 
                  @ @ @ @ @ @ 
                 @ @ @ @ @ @ @ 
                @ @ @ @ @ @ @ @ 
               @ @ @ @ @ @ @ @ @ 
              @ @ @ @ @ @ @ @ @ @ 
             @ @ @ @ @ @ @ @ @ @ @ 
            @ @ @ @ @ @ @ @ @ @ @ @ 

Comparison

Conclusion

Pyramid patterns in Python are created using nested loops to control spacing and symbol placement. Use right-angled patterns for simple steps, and isosceles triangles for classic pyramid shapes.