How to select columns from a list?

[essicolo]

How would you select columns from all the items of a list?

With pandas, I would use

import pandas as pd
from siuba.data import mtcars
my_features = ["mpg", "hp", "wt"]
mtcars[my_features]

With R - dplyr,

library("tidyverse")
data(mtcars)
my_features <- c("mpg", "hp", "wt")
mtcars %>% select(my_features)

But with siuba?

from siuba import *
from siuba.data import mtcars
my_features = ["mpg", "hp", "wt"]
mtcars >> select(my_features) # Exception: variable must be either a string or Var instance

Thanks!