Removing system lcb breaks sdk3 imports

If I run apt-get remove libcouchbase* after installing python sdk 3.0.0b3, it seems it remove the built in lcb in the python sdk as well. I am doing this on ubuntu and installing lcb 3 as per official docs. Then I run pip install couchbase==3.0.0b3. You can see the import works at this stage from the uploaded screenshots. Then I remove lcb with apt-get remove libcouchbase* and retry importing the libraries in python and it breaks with import error. Please see screenshots.