python-pip 6.0.6-1 Please find below error messages when runiing some pip commands. pip have been working like a charm until now. A bug or some misconfigurations ?? --------------------------------- $ pip install websocket-client Exception: Traceback (most recent call last): File "/usr/lib/python3.4/site-packages/pip/basecommand.py", line 232, in main status = self.run(options, args) File "/usr/lib/python3.4/site-packages/pip/commands/install.py", line 339, in run requirement_set.prepare_files(finder) File "/usr/lib/python3.4/site-packages/pip/req/req_set.py", line 229, in prepare_files req_to_install.check_if_exists() File "/usr/lib/python3.4/site-packages/pip/req/req_install.py", line 928, in check_if_exists self.satisfied_by = pkg_resources.get_distribution(self.req) File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 461, in get_distribution dist = get_provider(dist) File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 341, in get_provider return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0] File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 870, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 740, in resolve env = Environment(self.entries) File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 927, in __init__ self.scan(search_path) File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 957, in scan self.add(dist) File "/usr/lib/python3.4/site-packages/pip/_vendor/pkg_resources/__init__.py", line 977, in add dists.sort(key=operator.attrgetter('hashcmp'), reverse=True) TypeError: unorderable types: NoneType() < str() ----------------------------------------------------- gabx@hortensia ➤➤ ~ % pip install --verbose There was an error checking the latest version of pip Traceback (most recent call last): File "/usr/lib/python3.4/site-packages/pip/utils/outdated.py", line 129, in pip_version_check state.save(pypi_version, current_time) File "/usr/lib/python3.4/site-packages/pip/utils/outdated.py", line 76, in save with open(self.statefile_path) as statefile: FileNotFoundError: [Errno 2] No such file or directory: '/home/gabx/.cache/pip/selfcheck.json' ------------------------------------------------------- Thank you for help