I have a library installed from google and I was trying to import a function from it yet it says that the function cannot be imported.

The error is as follows:
ImportError: cannot import name ‘exp_ratios’ from ‘Lily.utils.np_utils’
Th code is as follows:
from Lily.utils.np_utils import (assert_same_shape,
softmax,
normalize,
exp_ratios,
unnormalize)
but when I checked in np_utils python file I found that the function -‘exp_ratios- existed