Simple Calculator Program in Python

This Python program implements a basic calculator with operations for addition, subtraction, multiplication, and division.

Python Code:

"""
A simple calculator program in Python.
"""

def add(num1, num2):
    """
    Function to add two numbers.
    :param num1: The first number.
    :param num2: The second number.
    :return: The sum of num1 and num2.
    """
    return num1 + num2

def subtract(num1, num2):
    """
    Function to subtract two numbers.
    :param num1: The first number.
    :param num2: The second number.
    :return: The difference of num1 and num2.
    """
    return num1 - num2

def multiply(num1, num2):
    """
    Function to multiply two numbers.
    :param num1: The first number.
    :param num2: The second number.
    :return: The product of num1 and num2.
    """
    return num1 * num2

def divide(num1, num2):
    """
    Function to divide two numbers.
    :param num1: The dividend.
    :param num2: The divisor (must not be zero).
    :return: The result of dividing num1 by num2.
    :raises ZeroDivisionError: If num2 is zero.
    """
    if num2 == 0:
        raise ZeroDivisionError("Cannot divide by zero")
    return num1 / num2

# Example usage
num1 = 10.5
num2 = 5.2

# Perform operations
sum_result = add(num1, num2)
difference = subtract(num1, num2)
product = multiply(num1, num2)
quotient = divide(num1, num2)

# Output results
print(f"Sum: {sum_result}")
print(f"Difference: {difference}")
print(f"Product: {product}")
print(f"Quotient: {quotient}")
  

Explanation:

The Python code above defines a simple calculator program with the following components:

• Function Definitions: Functions (add, subtract, multiply, divide) are defined to perform basic arithmetic operations.
• Function Documentation: Each function includes docstring comments to describe their purpose, parameters, return values, and exceptions raised.
• Exception Handling: The divide function handles the case of division by zero by raising a ZeroDivisionError.
• Example Usage: Variables num1 and num2 are initialized with example values, and the functions are called to perform addition, subtraction, multiplication, and division operations.
• Output: The results of each operation are printed to the console using formatted strings (f"...").

Usage:

To use this calculator program:

1. Edit the values of num1 and num2 to input different numbers.
2. Run the Python script to perform addition, subtraction, multiplication, and division operations based on the input values.

explanation  :

1. Function Definitions:
   • Functions (add, subtract, multiply, divide) are explained with their roles in performing arithmetic operations in Python.
2. Function Documentation:
   • Each function includes docstring comments to describe their purpose, parameters, return values, and potential exceptions (like ZeroDivisionError).
3. Exception Handling:
   • The divide function handles the scenario where num2 is zero by raising a ZeroDivisionError.
4. Example Usage:
   • Variables num1 and num2 are initialized with example values, and the functions are called to demonstrate addition, subtraction, multiplication, and division operations.
5. Output:
   • The results of each operation (sum_result, difference, product, quotient) are printed to the console using formatted strings (f"...").
6. Usage Instructions:
   • Instructions are provided on how to use the calculator program by editing the input variables, running the Python script, and observing the results of arithmetic calculations.