How to access TensorFlow AMI?

To start writing python code, login into the instance and run the below command: 
source tensorflow-dev/bin/activate 
Then run the command python. Now you can type Python code.

To reactivate the environment navigate to your project directory and run the below command:
source tensorflow-dev/bin/activate

Shell/Terminal:
sudo chmod 400 yourpemkeyname.pem
ssh -i yourpemkeyname.pem ubuntu@yourinstanceip