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Mutual Recursion for Even/Odd Check in Python

Implements even and odd checks using two functions that call each other recursively, demonstrating base cases and alternating calls.

recursion functions mutual-recursion

Python

def is_even(n):
    if n == 0:
        return True
    return is_odd(n - 1)

def is_odd(n):
    if n == 0:
        return False
    return is_even(n - 1)

if __name__ == "__main__":
    for num in range(0, 11):
        print(f"{num}: even={is_even(num)}, odd={is_odd(num)}")

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