Symmetrical Triangle - Python Programming Exercise

In this exercise, you will develop a Python program that displays a centered triangle from a string entered by the user. This exercise is perfect for practicing string manipulation and loops in Python. By prompting the user for a string and displaying it in a triangular format, you will gain hands-on experience in handling user input and output in Python. This exercise not only reinforces your understanding of string manipulation but also helps you develop efficient coding practices for managing user interactions.

 Category

Arrays, Lists, and Strings

 Exercise

Symmetrical Triangle

 Objective

Develop a Python program that displays a centered triangle from a string entered by the user:

a
uan
Juan

 Example Python Exercise

 Copy Python Code 
# Prompt the user for their name
name = input("Enter your name: ")

# Calculate the middle index of the string
length = len(name)

# Loop to print each row, progressively increasing the number of characters
for i in range(1, length + 1):
    # Center-align the substring by padding with spaces
    print(name[:i].center(length))

 Output

Enter your name: Juan
  J
 Juan
Juan

 Share this Python Exercise

 More Python Programming Exercises of Arrays, Lists, and Strings

Explore our set of Python Programming Exercises! Specifically designed for beginners, these exercises will help you develop a solid understanding of the basics of Python. From variables and data types to control structures and simple functions, each exercise is crafted to challenge you incrementally as you build confidence in coding in Python.

  •  Urban Database

    In this exercise, you will develop a Python program to create a database for storing information about urban areas. In the first approach, you will store only the nam...

  •  Display Banner

    In this exercise, you will develop a Python program to mimic the basic Unix SysV "banner" utility, capable of displaying large texts. This exercise is perfect ...

  •  Right-Aligned Triangle

    In this exercise, you will develop a Python program that prompts the user for a string and displays a right-aligned triangle. This exercise is perfect for prac...

  •  Text Processing

    In this exercise, you will develop a Python program that prompts the user for a string and performs several transformations. The program will replace all lowercase 'a...

  •  Hierarchical Structures

    In this exercise, you will develop a Python program to store two pieces of data for a person: Name and Date of birth. The Date of birth must be a...

  •  Data Organization

    In this exercise, you will develop a Python program that prompts the user for 10 integer numbers (ranging from -1000 to 1000), sorts them, and displays them in sorted...