Python — Practical Programs 100+ Part2

Pyramids and Patterns Programs

Program to Print Square Star Pattern using For Loop

n = int(input('Enter the number of rows: '))

# nested For Loop to print star
for i in range(n):
   for j in range(n):
      # printing stars
      print("* ",end="")
   print("\r")

Enter the number of rows: 5
* * * * * 
* * * * * 
* * * * * 
* * * * * 
* * * * *

Program to create Left Half Pyramid Pattern Using Asterisk (*)

r=int(input('Enter number of rows: '))
for i in range(r):
    for j in range(i+1):
        print('* ', end='')
    print(' ')

Enter number of rows: 5
*  
* *  
* * *  
* * * *  
* * * * *

Program to Create Half Pyramid Pattern Using Numeric Values

r=int(input('Enter number of rows: '))
for i in range(r):
    for j in range(i+1):
        print(j+1, end=' ')
    print(' ')

Enter number of rows: 5
1  
1 2  
1 2 3  
1 2 3 4  
1 2 3 4 5 

Program to Create Half Pyramid Pattern Using Alphabets

r=int(input('Enter number of rows: '))
asciiValue = 65
for i in range(r):
    for j in range(i + 1):
        alpha = chr(asciiValue)
        print(alpha, end=' ')
    asciiValue += 1
    print(' ')

Enter number of rows: 5
A  
B B  
C C C  
D D D D  
E E E E E

Program to Create Inverted Half Pyramid Pattern Using Asterisk

r=int(input('Enter number of rows: '))

for i in range(r, 0, -1):
    for j in range(0, i):
        print('*', end=' ')
    
    print(' ')

Enter number of rows: 5
* * * * *  
* * * *  
* * *  
* *  
*  

Program to Right Half Pyramid Star Pattern in Python

n = int(input('Enter the number of rows: '))
for i in range(n):
      for j in range(n-i-1):
         # printing spaces
         print(" ", end=" ")

      for j in range(i+1):
         # printing stars
         print("* ",end="")
      print()

Enter the number of rows: 5
        * 
      * * 
    * * * 
  * * * * 
* * * * *

Program to Create Full Pyramid Pattern Using Asterisk

r=int(input('Enter number of rows: '))
x = 0
for i in range(1, r + 1):
    for space in range(1, (r - i) + 1):
        print(end=' ')
    while x != (2 * i - 1):
        print('*', end='')
        x += 1
    x = 0
    print()

Enter number of rows: 5
    *
   ***
  *****
 *******
*********

n = int(input('Enter the number of rows: '))
a = n - 1
for i in range(n):
  for j in range(a):
     print(end=" ")

  # decrementing a after each loop
  a = a - 1
  for j in range(i+1):
     # printing stars
     print("* ",end="")
  print("\r")

Enter the number of rows: 5
    * 
   * * 
  * * * 
 * * * * 
* * * * * 

Full Inverted Pyramid Pattern

rows =int(input('Enter number of rows: '))  
for i in range(rows+1, -1, -1):
    for space in range(0, rows-i+1):
        print('  ', end='')
    for j in range(i, 2*i-1):
        print('* ', end='')
    for j in range(1, i-1):
        print('* ', end='')
    print()

Enter number of rows: 5
* * * * * * * * * 
  * * * * * * * 
    * * * * * 
      * * * 
        *

Reverse Right Half Pyramid Star Pattern in Python

n = int(input('Enter the number of rows: '))
for i in range(n):
      for j in range(i+1):
         # printing spaces
         print(" ",end=" ")

      for k in range(n-i):
         # printing stars
         print("* ",end="")
      print()

Enter the number of rows: 5
  * * * * * 
    * * * * 
      * * * 
        * * 
          * 

Scalene Triangle Star Pattern

n = int(input('Enter the number of rows: '))
a = n - 1
for i in range(n):
  for j in range(a):
     print(end=" ")

  # decrementing a after each loop
  a = a - 1
  for j in range(i+1):
     # printing stars
     print("* ",end="  ")
  print("\r")

Enter the number of rows: 5
    *   
   *   *   
  *   *   *   
 *   *   *   *   
*   *   *   *   *

Diamond Star Pattern in Python

n = int(input('Enter the number of rows: '))
for i in range(n):
  for j in range(n-i-1):
     print(" ", end="")
  for j in range(2*i+1):
     # printing stars
     print("*", end="")
  print()

   # print downward pyramid
for i in range(n-1):
  for j in range(i+1):
     print(" ", end="")
  for j in range(2*(n-i-1)-1):
     # printing stars
     print("*", end="")
  print()

Enter the number of rows: 5
    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *

Hourglass Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(n-1):
      for j in range(i):
         print(" ", end=" ")
      for j in range(2*(n-i)-1):
         # printing stars
         print("*", end=" ")
      print()

   # print upper pyramid
for i in range(n):
  for j in range(n-i-1):
     print(" ", end=" ")
  for j in range(2*i+1):
     # printing stars
     print("*", end=" ")
  print()

Enter the number of rows: 5
* * * * * * * * * 
  * * * * * * * 
    * * * * * 
      * * * 
        * 
      * * * 
    * * * * * 
  * * * * * * * 
* * * * * * * * * 

Heart Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(n//2, n, 2):
      for j in range(1, n-i ,2):
         print(" ", end=" ")
      for j in range(1, i+1, 1):
         print("*", end=" ")
      for j in range(1, n-i+1, 1):
         print(" ", end=" ")
      for j in range(1, i+1, 1):
         print("*", end=" ")
      print()

   # print upper side of heart
for i in range(n,0,-1):
  for j in range(i, n, 1):
     print(" ", end=" ")
  for j in range(1, i*2, 1):
     print("*", end=" ")
  print()

Enter the number of rows: 5
  * *       * * 
* * * *   * * * * 
* * * * * * * * * 
  * * * * * * * 
    * * * * * 
      * * * 
        * 

Hollow Square Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(n):
      for j in range(n):
         # printing stars
         if i == 0 or i == n-1 or j == 0 or j == n-1:
            print("*", end=" ")
         else:
            print(" ", end=" ")
      print("\r")

Enter the number of rows: 4
* * * * 
*     * 
*     * 
* * * * 

Hollow Left Half Pyramid Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(1, n+1):
      for j in range(i):
         # printing stars
         if j == 0 or j == i-1:
            print("*", end=" ")
         else:
            if i != n:
               print(" ", end=" ")
            else:
               print("*", end=" ")
      print()

Enter the number of rows: 5
* 
* * 
*   * 
*     * 
* * * * *

Hollow Reverse Left Half Pyramid Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(n, 0, -1):
      for j in range(i, 0, -1):
         if i == 1 or i == n or j == 1 or j == i:
            # printing stars
            print("*", end=" ")
         else:
            print(" ", end=" ")
      print()

Enter the number of rows: 5
* * * * * 
*     * 
*   * 
* * 
* 

Hollow Triangle or Pyramid Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(n):
      for j in range(n-i-1):
         print(" ", end=" ")
      
      for j in range(2*i+1):
         # printing stars
         if j == 0 or j == 2*i:
            print("*", end=" ")
         else:
            if i == n-1:
               print("*", end=" ")
            else:
               print(" ", end=" ")
      print()

Enter the number of rows: 5
        * 
      *   * 
    *       * 
  *           * 
* * * * * * * * *

Hollow Reverse Triangle or Pyramid Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(1, n+1):
      for j in range(0, i):
         print(" ", end=" ")

      for j in range(1, (n*2 - (2*i-1)) + 1):
         if i == 1 or j == 1 or j ==(n*2 -(2*i-1)):
            # printing stars
            print("*", end=" ")
         else:
            print(" ", end=" ")
      print()

Enter the number of rows: 5
  * * * * * * * * * 
    *           * 
      *       * 
        *   * 
          * 

Hollow Diamond Star Pattern

n = int(input('Enter the number of rows: '))

for i in range(n):
      for j in range(n-i-1):
         print(" ", end=" ")
      for j in range(2*i+1):
         if j == 0 or j == 2*i:
            # printing stars
            print("*", end=" ")
         else:
            print(" ", end=" ")
      print()

for i in range(n-1):
  for j in range(i+1):
     print(" ", end=" ")
  for j in range(2*(n-i-1)-1):
     if j == 0 or j == 2*(n-i-1)-2:
        # printing stars
        print("*", end=" ")
     else:
        print(" ", end=" ")
  print()

Enter the number of rows: 5
        * 
      *   * 
    *       * 
  *           * 
*               * 
  *           * 
    *       * 
      *   * 
        *

Hollow Hourglass Star Pattern

n = int(input('Enter the number of rows: '))
for i in range(n, 0, -1):
      for j in range(n-i):
         print(" ", end=" ")
      for j in range(1, 2*i):
         if i==1 or i==n or j==1 or j==2*i-1:
            # printing stars
            print("*", end=" ")
         else:
            print(" ", end=" ")
      print()
   
for i in range(2, n+1):
  for j in range(n-i):
     print(" ", end=" ")
  for j in range(1, 2*i):
     if i==n or j==1 or j==2*i-1:
        # printing stars
        print("*", end=" ")
     else:
        print(" ", end=" ")
  print()

Enter the number of rows: 5
* * * * * * * * * 
  *           * 
    *       * 
      *   * 
        * 
      *   * 
    *       * 
  *           * 
* * * * * * * * *

Pascal’s Triangle

rows =int(input('Enter number of rows: '))
coef = 1
for i in range(1,rows+1):
    for space in range(1, rows-i+1):
        print(' ',end='')
    for j in range(0, i):
        if j==0 or i==0:
            coef = 1
        else:
            coef = coef * (i - j)//j
        print(coef, end = ' ')
    print()

Enter number of rows: 5
    1 
   1 1 
  1 2 1 
 1 3 3 1 
1 4 6 4 1 

Floyd’s Triangle

r=int(input('Enter number of rows: '))  
num = 1
for i in range(1, r+1):
    for j in range(1, i+1):
        print(num, end=" ")
        num += 1
    print()

Enter number of rows: 5
1 
2 3 
4 5 6 
7 8 9 10 
11 12 13 14 15