From the bug reporter:
Server is 2.0.0. I've updated the python client to 0.8.0 and the problem remains although with a different error message;
File "/Volumes/DATA/dv/epic/server/venv/lib/python2.7/site-packages/couchbase/client.py", line 254, in delete
AttributeError: 'RestConnection' object has no attribute 'delete_view'
I think the problem lies simply within the Python client; inspecting client.py:254 there's a call to a non existent function delete_view().. probably should be RestConnection.delete_design_doc().