No module named graphsage

[ans92]

Hi,
Thank you for this great code. I am trying to running this code on google colab with python version 2.7. I am running this file:
!bash /content/drive/MyDrive/GraphSAGE-master/example_supervised.sh
And it is giving me following error:
/usr/bin/python2: No module named graphsage

And when I try this command:
!python -m /content/drive/MyDrive/GraphSAGE-master/graphsage/unsupervised_train.py --train_prefix ./example_data/ppi --model graphsage_mean --max_total_steps 1000 --validate_iter 10

Then I am getting following error:
/usr/bin/python2: Import by filename is not supported.

Please help me how can I run the code in google colab. I would be very thankful to your for your help and support.