#!/usr/bin/env python3
"""
A simple module for summing numbers.
"""

def sum_numbers(numbers):
    """
    Sum a list of numbers.

    Args:
        numbers: List of numbers (int or float)

    Returns:
        Sum of the numbers
    """
    return sum(numbers)

def main():
    """Example usage of sum_numbers function."""
    # Example 1: Sum integers
    int_list = [1, 2, 3, 4, 5]
    result = sum_numbers(int_list)
    print(f"Sum of {int_list} = {result}")

    # Example 2: Sum floats
    float_list = [1.5, 2.5, 3.5]
    result = sum_numbers(float_list)
    print(f"Sum of {float_list} = {result}")

    # Example 3: Empty list
    empty_list = []
    result = sum_numbers(empty_list)
    print(f"Sum of {empty_list} = {result}")

if __name__ == "__main__":
    main()