关于在python中用几个字符分割字符串的一个函数

Question

this is a function I found on the internet, but I'm not sure what does the line s,res = res,[] mean, can anyone explain this to me? Thank you very much!

def my_split(s, seps):
    res = [s]
    for sep in seps:
        s, res = res, []
        for seq in s:
            res += seq.split(sep)
            return res

Answer 1

s, res = res, []

Means

s = res
res = []

Replacement of variable in single line.