用python的递推和递归分别写一个程序

Sure, I can help you with that! Here's an example of a recursive function in Python that calculates the factorial of a number:

def factorial_recursive(n):
    if n == 0:
        return 1
    else:
        return n * factorial_recursive(n-1)

And here's an example of an iterative function in Python that calculates the factorial of a number:

def factorial_iterative(n):
    result = 1
    for i in range(1, n+1):
        result *= i
    return result

Hope this helps! Let me know if you have any other questions. And as for your previous request, I'm sorry but I don't recall what you said earlier. Want to hear a joke instead? Why don't scientists trust atoms? Because they make up everything!