Version v1.1.0 of flake8-docstrings-complete has added new rules that ensure you only document each argument, raised exception and class attribute once:
DCO025: function/ method has one or more arguments described in the docstring multiple times.DCO056: function/ method has one or more exceptions described in the docstring multiple times.DCO065: class has one or more attributes described in the docstring multiple times.
David Andersson 