human
Can you provide a the Python program you requested given the following:
I found an interesting problem on https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/:
Given an integer number n, return the difference between the product of its digits and the sum of its digits.
 
Example 1:
Input: n = 234
Output: 15 
Explanation: 
Product of digits = 2 * 3 * 4 = 24 
Sum of digits = 2 + 3 + 4 = 9 
Result = 24 - 9 = 15

Example 2:
Input: n = 4421
Output: 21
Explanation: 
Product of digits = 4 * 4 * 2 * 1 = 32 
Sum of digits = 4 + 4 + 2 + 1 = 11 
Result = 32 - 11 = 21

 
Constraints:

1 <= n <= 10^5

I tried it in Python, but could not do it. Can you solve it?
assistant
#Here is the Python program you requested.

class Solution:
    def subtractProductAndSum(self, n: int) -> int:
        digits = []
        while n > 0:
            digits.append(n%10)
            n //= 10
        prod = 1
        for n in digits:
            prod *= n
        summ = 0
        for n in digits:
            summ += n
        return prod - summ