पूर्णांक मॉड्यूलर घात

def mod_power(base, exponent, modulus):
    if any(type(v) is not int for v in (base, exponent, modulus)):
        raise ValueError("operand.integer")
    if exponent < 0 or modulus <= 0:
        raise ValueError("operand.range")
    result = 1 % modulus
    base %= modulus
    while exponent:
        if exponent & 1:
            result = result * base % modulus
        base = base * base % modulus
        exponent >>= 1
    return result