Write and test a recursive function that calculates a base value to a power. Example: 2^3 is 8. (2 is the base, 3 is the power). It should work with negative and positive bases and powers.

The function signature is:

def to_power(base, power): """ ------------------------------------------------------- Calculates base^power. Use: ans = to_power(base, power) ------------------------------------------------------- Parameters: base - base to apply power to (float) power - power to apply (int) Returns: ans - base ^ power (float) ------------------------------------------------------- """