# Python Program to print pattern of letter O

Hello everyone! Welcome back to programminginpython.com. I am continuing with this pattern programming series, here I will tell you how to print the pattern of the letter O. In the previous tutorials, I have shown you the patterns of letters A to N. Here it’s now time for Pattern O. You can check the complete series on letter patterns here.

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#### Print Pattern O – Code Visualization

Python program to print the pattern of letter O

#### Approach:

• Read an input integer for asking the size of the letter using `input()`
• Check if the entered number is greater than 8,
• if yes, call the function `print_pattern()`
• else, show a message to enter a number which is greater or equal to 8
• print_pattern()
• here we only do two things, print star(`*`) and print space(` `), just writing conditions so the pattern of `*`‘s and ` `‘s will display the pattern O
• following are 2 conditions for printing *’s
We have 2 loops, an outer loop() for rows, and an inner loop for columns.
• ```# Outer for loop
for row in range(n):

# Inner for loop
for column in range(n):```
• Print first column
• `column == 0 and (row != 0 and row != n-1)`
• Print last column
• `column == n -1 and (row != 0 and row != n-1)`
• Print first row
• `row == 0 and (column != 0 and column != n-1)`
• Print last row
• `row == n - 1 and (column != 0 and column != n-1)`
• print ` ` in remaining all cases.

#### Program:

```__author__ = 'Avinash'

# Python3 program to print alphabet pattern O

#   * * * * * *
# *             *
# *             *
# *             *
# *             *
# *             *
# *             *
#   * * * * * *

def print_pattern(n):
for row in range(n):
for column in range(n):
if (

# first row
(row == 0 and (column != 0 and column != n-1)) or

# last row
(row == n - 1 and (column != 0 and column != n-1)) or

# first column
(column == 0 and (row != 0 and row != n-1)) or

# last column
(column == n -1 and (row != 0 and row != n-1))
):
print("*", end=" ")
else:
print(" ", end=" ")
print()

size = int(input("Enter a size:\t"))

if size < 8:
print("Enter a size minumin of 8")
else:
print_pattern(size)

```