def lose_life(self): """Decrements a cat's life by 1. When lives reaches zero, 'is_alive' becomes False. If this is called after lives has reached zero, print out that the cat has no more lives to lose. """ "*** YOUR CODE HERE ***"

It seems like this is an incomplete function definition, and the implementation needs to be filled in. Here's one possible implementation:

def lose_life(self):
    if self.lives > 0:
        self.lives -= 1
        if self.lives == 0:
            self.is_alive = False
    else:
        print("The cat has no more lives to lose.")

This implementation checks if the cat still has lives left, decrements the `lives` attribute by 1, and sets the `is_alive` attribute to `False` if `lives` reaches zero. If the function is called after the cat has already lost all its lives, it prints out a message to indicate that.