FileNotFoundError: [Errno 2] No such file or directory: '/home/user/anaconda3/lib/python3.6/site-packages/psutil-5.4.8.dist-info/METADATA'

Environment

• pip version: 19.0.2
• Python version: 3.6
• OS: Linux Mint 19.1 (Linux 4.15.0-45-generic x86_64)
• conda 4.6.2

Description When running Jupyter Notebook, following error prevented kernel starting:

ModuleNotFoundError: No module named 'prompt_toolkit.formatted_text'

Based on this, I tried to pip install -U jupyter_console. This failed, giving

FileNotFoundError: [Errno 2] No such file or directory: '/home/user/anaconda3/lib/python3.6/site-packages/psutil-5.4.8.dist-info/METADATA'

Upon further investigation, the reason for this is that there was as subfolder created with another psutil-5.4.8.dist-info created. Thus, by moving the files out of this nested subfolder, everything worked again.

KO: /home/user/anaconda3/lib/python3.6/site-packages/psutil-5.4.8.dist-info/psutil-5.4.8.dist-info/METADATA

OK: /home/user/anaconda3/lib/python3.6/site-packages/psutil-5.4.8.dist-info/METADATA

I wasn’t manually doing anything in these package folders; any idea what automatic process (suspect pip-related) could have caused this?

Expected behavior Directory structure should be /home/user/anaconda3/lib/python3.6/site-packages/psutil-5.4.8.dist-info/METADATA

How to Reproduce pip install -U jupyter_console

Output

Error checking for conflicts.
Traceback (most recent call last):
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2897, in _dep_map
    return self.__dep_map
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2691, in __getattr__
    raise AttributeError(attr)
AttributeError: _DistInfoDistribution__dep_map

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2888, in _parsed_pkg_info
    return self._pkg_info
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2691, in __getattr__
    raise AttributeError(attr)
AttributeError: _pkg_info

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_internal/commands/install.py", line 503, in _warn_about_conflicts
    package_set, _dep_info = check_install_conflicts(to_install)
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_internal/operations/check.py", line 108, in check_install_conflicts
    package_set, _ = create_package_set_from_installed()
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_internal/operations/check.py", line 47, in create_package_set_from_installed
    package_set[name] = PackageDetails(dist.version, dist.requires())
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2635, in requires
    dm = self._dep_map
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2899, in _dep_map
    self.__dep_map = self._compute_dependencies()
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2908, in _compute_dependencies
    for req in self._parsed_pkg_info.get_all('Requires-Dist') or []:
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2890, in _parsed_pkg_info
    metadata = self.get_metadata(self.PKG_INFO)
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1410, in get_metadata
    value = self._get(self._fn(self.egg_info, name))
  File "/home/jwfu/anaconda3/lib/python3.6/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1522, in _get
    with open(path, 'rb') as stream:
FileNotFoundError: [Errno 2] No such file or directory: '/home/jwfu/anaconda3/lib/python3.6/site-packages/psutil-5.4.8.dist-info/METADATA'

[giacomoarienti]

I solved my problem in this way: conda uninstall pip

Now pip works fine but I had to reinstall all my packages.

[yuvirl]

I solved the problem in this way.

pip install -U pip pip install psutil