Python Program To Print Hollow Triangle Pattern
In this tutorial we will see the python program to print hollow triangle pattern, printing patterns in python is fun and very interesting, you must have created python programs to print diamond and other shapes but today I will show you how to print a hollow triangle pattern.
We will use for loops for creating this pattern so no external python library is needed, just follow this tutorial till the end.
Python Code To Print Hollow Triangle Pattern
row = 10 for i in range(row): for j in range(row-i): print(' ', end='') for j in range(2*i+1): if j==0 or j==2*i or i==row-1: print('*',end='') else: print(' ', end='') print()
Above is the code for printing the hollow triangle pattern, now let’s see how this code works:
- The variable
rowis set to 10, indicating the number of rows in the pyramid.
- The outer loop iterates
rownumber of times to represent each row of the pyramid.
- Within the outer loop, the first inner loop iterates
row - itimes and prints spaces to create the indentation for each row. The value of
irepresents the current row number, so the number of spaces decreases by one for each subsequent row.
- The second inner loop iterates
2*i + 1times to print the asterisks and spaces within each row. The value of
idetermines the number of asterisks in each row. The conditions inside the loop check whether the current position (
j) is at the beginning or end of the row (
j == 0or
j == 2*i) or if it is the last row of the pyramid (
i == row-1). If any of these conditions are true, an asterisk is printed; otherwise, a space is printed.
- After each row is printed, a newline character is printed using the
print()function without any arguments. This moves the cursor to the next line, creating a new row in the pyramid.
- The outer loop continues to iterate, repeating the process for each row until all rows of the pyramid have been printed.
Now to run this program you need to have python installed on your computer, If you don’t have then follow this guide: Install and setup python on your computer or you can use this online python compiler.
After running this program you will see a hollow triangle pattern printed like below output.
* * * * * * * * * * * * * * * * * *******************
As you can see we successfully created this program, I hope you found this tutorial helpful and useful. Do share this tutorial with your friends who might be interested in this program.
Here are some more python drawing tutorials for you:
- Python Program To Print Hollow Right Angled Triangle Pattern.
- Python Program To Convert Miles To Feet.
- Python Program To Convert Rupee To Paise.
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Thanks for reading, have a nice day 🙂