Source from : https://medium.com/analytics-vidhya/importing-your-own-python-module-or-python-file-into-colab-3e365f0a35ec

Step 1

Primarily, you must Mount your google drive in google colab:
Code to below, your files on your google drive is import files/packages inside a google colab.

# Mount your google drive in google colab
from google.colab import drive
drive.mount('/content/drive')

Step 2

Secondly, insert the directory to your python path using sys:

# Insert the directory
import sys
sys.path.insert(0,’/content/drive/My Drive/ColabNotebooks’)

Step 3

Now, you can be able to import your module or file stuff from that directory.

# Import your module or file
import my_module