python - OSError: [Errno 2] No such file or directory: '/usr/local/lib/python2.7/dist-packages/pyduino-0.0.0-py2.7.egg' -

i trying install , uninstall package.i have written setup.py script.while installing script works fine , package installs.but while uninstalling package uninstalls throw errors.i using pip uninstall package_name uninstalling.here traceback

uninstalling pyduino-0.0.0:   /usr/local/lib/python2.7/dist-packages/pyduino-0.0.0-py2.7.egg proceed (y/n)? y   uninstalled pyduino-0.0.0 directory '/home/billy/.cache/pip/http' or parent directory not owned current user , cache has been disabled. please check permissions , owner of directory. if executing pip sudo, may want sudo's -h flag. traceback (most recent call last):   file "/usr/local/bin/pip", line 11, in <module>     sys.exit(main())   file "/usr/local/lib/python2.7/dist-packages/pip/__init__.py", line 221, in main     return command.main(cmd_args)   file "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 252, in main     pip_version_check(session)   file "/usr/local/lib/python2.7/dist-packages/pip/utils/outdated.py", line 102, in pip_version_check     installed_version = get_installed_version("pip")   file "/usr/local/lib/python2.7/dist-packages/pip/utils/__init__.py", line 848, in get_installed_version     working_set = pkg_resources.workingset()   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 619, in __init__     self.add_entry(entry)   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 675, in add_entry     dist in find_distributions(entry, true):   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 1942, in find_eggs_in_zip     if metadata.has_metadata('pkg-info'):   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 1463, in has_metadata     return self.egg_info , self._has(self._fn(self.egg_info, name))   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 1824, in _has     return zip_path in self.zipinfo or zip_path in self._index()   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 1704, in zipinfo     return self._zip_manifests.load(self.loader.archive)   file "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 1644, in load     mtime = os.stat(path).st_mtime oserror: [errno 2] no such file or directory: '/usr/local/lib/python2.7/dist-packages/pyduino-0.0.0-py2.7.egg'  

meanwhile package uninstalls.when tried command pip freeze package not show up.so,why above errors show up?thanks in advance helping...

i found solution.i didn't upgrade pip after installing.later,i upgraded , works perfectly..