Python Exercise: Print alphabet pattern O

Last update on April 17 2025 12:58:24 (UTC/GMT +8 hours)

23. Alphabet Pattern 'O'

Write a Python program to print the alphabet pattern 'O'.

Pictorial Presentation:

Sample Solution:

Python Code:

# Initialize an empty string named 'result_str'
result_str = ""

# Iterate through rows from 0 to 6 using the range function
for row in range(0, 7):
    # Iterate through columns from 0 to 6 using the range function
    for column in range(0, 7):
        # Check conditions to determine whether to place '*' or ' ' in the result string
        
        # If conditions are met, place '*' in specific positions based on row and column values
        if (((column == 1 or column == 5) and row != 0 and row != 6) or ((row == 0 or row == 6) and column > 1 and column < 5)):
            result_str = result_str + "*"  # Append '*' to the 'result_str'
        else:
            result_str = result_str + " "  # Append space (' ') to the 'result_str'

    result_str = result_str + "\n"  # Add a newline character after each row in 'result_str'

# Print the final 'result_str' containing the pattern
print(result_str) 

Sample Output:

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

Flowchart :

For more Practice: Solve these Related Problems:

• Write a Python program to print the letter 'O' pattern with a hollow center using loops.
• Write a Python program to generate 'O' ensuring that the top and bottom rows are filled and the sides are bordered by asterisks.
• Write a Python program to construct the pattern for 'O' by printing asterisks in a circular formation using conditionals.
• Write a Python program to create a scalable 'O' pattern by adjusting the number of spaces and asterisks based on input size.

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• Python Conditional Statements and loops Exercises Home ↩
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