Python Program to print pattern of letter Q

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 Q. In the previous tutorials, I have shown you the patterns of letters A to P. Here it’s now time for Pattern Q. You can check the complete series on letter patterns here.

Program on Github

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Print Pattern Q – Code Visualization

Task:

Python program to print the pattern of letter Q

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 that 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 row
      row == 0 and (column != 0 and column != n-1)

      Print last row
      row == n-2 and (column != 0 and column < n-2)

      Print first column
      column == 0 and (row != 0 and row < n-2)

      Print last column
      column == n - 1 and (row != 0 and row != n-2)

      Print Q tail
      (n // 2 < row < n) and (column > n // 2) and (row == column)

  • print ‘  ‘ in remaining all cases.

Program on GitHub

Program:

__author__ = 'Avinash'

# Python3 program to print alphabet pattern Q
```
   * * * * * *
 *             *
 *             *
 *             *
 *             *
 *         *   *
   * * * * * *
               *
```

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-2 and (column != 0 and column < n-2)) or

              # first column
              (column == 0 and (row != 0 and row < n-2)) or

              # last column
              (column == n - 1 and (row != 0 and row != n-2)) or

              # Q Tail
              ((n // 2 < row < n) and (column > n // 2) and (row == column))
            ):
                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)

Output:

Program on GitHub