power_recursion.py

"""
== Raise base to the power of exponent using recursion ==
    Input -->
        Enter the base: 3
        Enter the exponent: 4
    Output  -->
        3 to the power of 4 is 81
    Input -->
        Enter the base: 2
        Enter the exponent: 0
    Output -->
        2 to the power of 0 is 1
"""


def power(base: int, exponent: int) -> float:
    """
    Calculate the power of a base raised to an exponent.

    Examples:
    >>> power(3, 4)
    81
    >>> power(2, 0)
    1
    >>> all(power(base, exponent) == pow(base, exponent)
    ...     for base in range(-10, 10) for exponent in range(10))
    True
    """
    if exponent == 0:
        return 1
    elif exponent < 0:
        return 1 / power(base, -exponent)
    else:
        return base * power(base, exponent - 1)


if __name__ == "__main__":
    base = int(input("Enter the base: ").strip())
    exponent = int(input("Enter the exponent: ").strip())
    result = power(base, exponent)
    print(f"{base} to the power of {exponent} is {result}")