#!/usr/bin/env python3
"""
Sample Python code file for testing the enhanced file handler.
This file demonstrates code file processing capabilities.
"""

def calculate_fibonacci(n):
    """Calculate the nth Fibonacci number."""
    if n <= 1:
        return n
    return calculate_fibonacci(n-1) + calculate_fibonacci(n-2)

def main():
    """Main function to demonstrate the code."""
    print("Testing Fibonacci calculation:")
    for i in range(10):
        result = calculate_fibonacci(i)
        print(f"F({i}) = {result}")

if __name__ == "__main__":
    main()