python equivalent for MATLABS vratiotest

I am following the book Algorithmic Trading and I am on Chapter 2: The Basics of Mean Reversion.

I have a few pairs and their close prices and I want to check the spread of which pair is mean-reverting.

The book uses MATLAB for all its programming and I am using Python.

First, there was a mention of adf function in MATLAB’s package and its equivalent python code is:

from statsmodels.tsa.stattools import adfuller
ad = adfuller(spread, maxlag = 1)

Then there is a mention of cadf and I think its equivalent python code is:

from statsmodels.tsa.stattools import coint
t_statistic, p_value, crit_value = coint(x, y)

However, I cannot find the python equivalent for MATLAB‘s vratiotest.

Please let me know if there is a python function which performs same as MATLAB‘s vratiotest.