Python Program to Print U Star Pattern

This article shows how to write a Python program to print the Alphabet U star pattern using the for loop, while loop, and functions with an example. 

The below alphabet U star pattern example accepts the user-entered rows, and the nested for loop iterates the rows. The Python elif condition is to print stars in the first and last columns and in the last row to get the Alphabetical U pattern of stars and skip the others.

rows = int(input("Enter Alphabet U of Stars Rows = "))
print("====The Alphabet U Star Pattern====")

for i in range(rows):
    for j in range(rows):
        if (j == 0 or j == rows - 1) and i != rows - 1:
            print("*", end=" ")
        elif i == rows - 1 and j != 0 and j != rows - 1:
            print("*", end=" ")
        else:
            print(" ",end=" ")
    print()

Python program to print the Alphabet U Star pattern using while loop

Instead of a For loop, this program uses a while loop to iterate the Alphabet U pattern rows and print the stars on the first row and the middle column. For more, check the Python Star Pattern programs. In this example, we removed extra spaces, squeezed the U, and adjusted the code to get the boxy U.

rows = int(input("Enter Alphabet U of Stars Rows = "))

i = 0
while i < rows:
    j = 0
    while j < rows:
        if (j == 0 or j == rows - 1) and i != rows:
            print("*", end="")
        elif i == rows - 1 and j != 0 and j != rows:
            print("*", end="")
        else:
            print(end=" ")
        j += 1
    print()
    i += 1

Enter Alphabet U of Stars Rows = 10
*        *
*        *
*        *
*        *
*        *
*        *
*        *
*        *
*        *
**********

In this Python example, we created a UPattern function that accepts the rows and the symbol or character to print the Alphabet pattern of the given symbol.

• Python for loop syntax
• Python while loop syntax

def UPattern(rows, ch):
    for i in range(rows):
        for j in range(rows):
            if (j == 0 or j == rows - 1) and i != rows - 1:
                print('%c' %ch, end=' ')
            elif i == rows - 1 and j != 0 and j != rows - 1:
                print('%c' %ch, end=' ')
            else:
                print(" ", end=" ")
        print()


row = int(input("Enter Alphabet U of Stars Rows = "))
sy = input("Symbol for U Star Pattern = ")
UPattern(row, sy)

Enter Alphabet U of Stars Rows = 13
Symbol for U Star Pattern = @
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
@                       @ 
  @ @ @ @ @ @ @ @ @ @ @  

Also Read

• Python Program to Print T Star Pattern
• Python Program to Print V Star Pattern