python rolling

Question

Hi!
Could somebody help me with such a problem:
I have next code:

import pandas as pd
import numpy as np
s = pd.Series(np.linspace(0, 20, 15))
r = s.rolling(2)........

I need to divide each element of this series on previous one.

For example, if I have a series: 1,2,3 , then I want to get NaN, 2, 1.5

Answer 1

s.div(s.shift(periods=1))

https://code.sololearn.com/c19bC77PIbPL/?ref=app