cannot import name 'delayed' from 'sklearn.utils.fixes' - Google CoLab

 For Below Error 

Shows "ImportError: cannot import name 'Imputer' from 'sklearn.preprocessing' (/home/codeknight13/anaconda3/lib/python3.7/site-packages/sklearn/preprocessing/__init__.py)"

Sometime After PIP also doesnot work.

Fix : Actually the fix is very Simple. After every install we need to restart the Google Runtime.