Installing a module permanently in Google colab

colab.py

import os, sys

from google.colab import drive
drive.mount('/content/gdrive')

#create a path to save the module
nb_path = '/content/notebooks'
os.symlink('/content/gdrive/My Drive/Colab Notebooks', nb_path)
sys.path.insert(0, nb_path)

#isntall the module in the
!pip install --target=$nb_path catboost

#load the module in  a  new notebook
import sys
sys.path.append('/content/gdrive/My Drive/Colab Notebooks')

#Import the module
import catboost