Python NamedTuple example: Triangle area calculation

Last update on January 06 2025 13:37:20 (UTC/GMT +8 hours)

Write a Python program that defines a NamedTuple named "Triangle" with fields 'side1', 'side2', and 'side3'. Now write a function that takes a "Triangle" NamedTuple as input and calculates its area.

Sample Solution:

Code:

from collections import namedtuple
import math

# Define a Triangle NamedTuple
Triangle = namedtuple('Triangle', ['side1', 'side2', 'side3'])

# Function to calculate the area of a triangle
def triangle_area(triangle):
    print("Sides of the triangle:",triangle.side1,',',triangle.side2,',',triangle.side3)
    # Calculate the semi-perimeter (half the sum of all its
    # sides) of the triangle
    s = (triangle.side1 + triangle.side2 + triangle.side3) / 2

    # Calculate the area using Heron's formula
    area = math.sqrt(s * (s - triangle.side1) * (s - triangle.side2) * (s - triangle.side3))
    return area

# Create an instance of the Triangle NamedTuple
triangle_instance = Triangle(side1=4, side2=5, side3=7)

# Calculate and print the area of the triangle
area = triangle_area(triangle_instance)
print("Triangle Area:", area)

Output:

Sides of the triangle: 4 , 5 , 7
Triangle Area: 9.797958971132712

In the exercise above, we define a "Triangle" NamedTuple with 'side1', 'side2', and 'side3' fields. We also define a function "triangle_area()" that takes a "Triangle" NamedTuple as input and calculates its area using Heron's formula. Next, we create an instance of the "Triangle" NamedTuple and use the "triangle_area()" function to calculate its area.

Flowchart:

Previous: Python NamedTuple example: Circle attributes.
Next: Python NamedTuple example: Car attributes.