The 'pip==7.1.0' distribution was not found and is required by the application

I have the latest version of pip 8.1.1 on my ubuntu 16. But I am not able to install any modules via pip as I get this error all the time. File "/usr/local/bin/pip", line 5, in <module> from pkg_resources import load_entry_point File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2927, in <module> @_call_aside File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2913, in _call_aside f(*args, **kwargs) File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2940, in _initialize_master_working_set working_set = WorkingSet._build_master() File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 635, in _build_master ws.require(__requires__) File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 943, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 829, in resolve raise DistributionNotFound(req, requirers) pkg_resources.DistributionNotFound: The 'pip==7.1.0' distribution was not found and is required by the application I found a similar [link][1], but not helpful. [1]: https://stackoverflow.com/questions/38587785/pkg-resources-distributionnotfound-the-pip-1-5-4-distribution-was-not-found