"""
Sample Python module for testing MCP conversation continuity
"""


def fibonacci(n):
    """Calculate fibonacci number recursively"""
    if n <= 1:
        return n
    return fibonacci(n - 1) + fibonacci(n - 2)


def factorial(n):
    """Calculate factorial iteratively"""
    result = 1
    for i in range(1, n + 1):
        result *= i
    return result


class Calculator:
    """Simple calculator class"""

    def __init__(self):
        self.history = []

    def add(self, a, b):
        result = a + b
        self.history.append(f"{a} + {b} = {result}")
        return result

    def multiply(self, a, b):
        result = a * b
        self.history.append(f"{a} * {b} = {result}")
        return result