gax-google-pubsub-v1 will allow you to connect to the Google Pubsub API and access all its methods. In order to do this, you need to set up authentication as well as install the library locally.
To authenticate all your API calls, first install and setup the Google Cloud SDK. Once done, you can then run the following command in your terminal:
$ gcloud beta auth application-default login
$ gcloud auth login
Please see gcloud beta auth application-default login document for the difference between these commands.
Install this library in a virtualenv using pip. virtualenv is a tool to create isolated Python environments. The basic problem it addresses is one of dependencies and versions, and indirectly permissions.
With virtualenv, it’s possible to install this library without needing system install permissions, and without clashing with the installed system dependencies.
pip install virtualenv virtualenv <your-env> source <your-env>/bin/activate <your-env>/bin/pip install gax-google-pubsub-v1
pip install virtualenv virtualenv <your-env> <your-env>\Scripts\activate <your-env>\Scripts\pip.exe install gax-google-pubsub-v1
At this point you are all set to continue.