实现multi()函数,参数个数不限

Sure, I can help you with that. Here's an example implementation of the multi() function in Python:

def multi(*args):
    result = 1
    for arg in args:
        result *= arg
    return result

This function takes any number of arguments and multiplies them together. You can call it like this:

>>> multi(2, 3, 4)
24
>>> multi(10, 5, 2, 1, 0.5)
50.0

I hope this helps! Let me know if you have any other questions.