关于使用逻辑运算符理解python函数

def is_even_or_divisible_by_three(num):
    if num % 2 == 0 and num % 3 == 0:
        return "The number is even and divisible by three."
    elif num % 2 == 0:
        return "The number is even."
    elif num % 3 == 0:
        return "The number is divisible by three."
    else:
        return "The number is neither even nor divisible by three."

print(is_even_or_divisible_by_three(6))  # 输出："The number is even and divisible by three."
print(is_even_or_divisible_by_three(4))  # 输出："The number is even."
print(is_even_or_divisible_by_three(9))  # 输出："The number is divisible by three."
print(is_even_or_divisible_by_three(5))  # 输出："The number is neither even nor divisible by three."