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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 ‘B’. In the previous tutorial, I have shown you the pattern for the letter ‘A’.

You can also watch the video on YouTube here.

Program on Github

Task:

Python program to print the pattern of letter ‘B’

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 ‘B’
  • following are 3 conditions for printing *’s
    We have 2 loops, an outer loop() for rows and an inner loop for columns.

    # Outer for loop
    for i in range(n):  
        # Inner for loop 
        for j in range(n + 1):

    1. 1. the first line of alphabet
          i == 0 and j != 0 and j != n
       2. middle line – the whole line
          i == n // 2
       3. last line – the whole line
          i == n - 1
  • print ` ` in remaining all cases.

Program on GitHub

Python Program:

__author__ = 'Avinash'

# Python3 program to print alphabet B pattern

# Function to display alphabet pattern

def print_pattern(n):
    # Outer for loop for number of lines(rows)
    for i in range(n):
        # Inner for loop for logic execution
        for j in range(n + 1):
            # prints two column lines
            if ((j == 0 or j == n) or
                    # print first line of alphabet
                    i == 0 and j != 0 and j != n or
                    # prints last line
                    i == n - 1 or
                    # prints middle line
                    i == n // 2):
                print("*", end="")
            else:
                print(" ", end="")
        print()

# Size of the letter
num = int(input("Enter the size: \t "))
if num > 7:
    print_pattern(num)
else:
    print("Enter a size minimum of 8")

Program on GitHub

Print Pattern B – Code Visualization

Output:

That’s it for this post guys, also feel free to check other programs on patterns here or find some programs on algorithms here.

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