You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
def cube_volume(a):
    """Calculate the volume of a cube
    Args:
        a (float): length of a side of the cube
    Returns:
        Volume of the cube (float)

    """
    return a**3

# Input 
a = 4

# Calculate Cube Volume 
volume = cube_volume(a)

# Print Volume
print("Volume of cube with side length", a, "is", volume)
user
Volume of cube with side length 4 is 64
assistant