AttributeError: _DistInfoDistribution__dep_map

[pr2tik1]

• pip version: 20.2.3
• Python version: 3.7
• Operating system: Ubuntu

ERROR: Error while checking for conflicts. Please file an issue on pip's issue tracker: https://github.com/pypa/pip/issues/new
Traceback (most recent call last):
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 3021, in _dep_map
return self.__dep_map
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 2815, 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/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 3012, in _parsed_pkg_info
return self._pkg_info
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 2815, in getattr
raise AttributeError(attr)
AttributeError: _pkg_info

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 520, in _determine_conflicts
return check_install_conflicts(to_install)
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_internal/operations/check.py", line 108, in check_install_conflicts
package_set, _ = create_package_set_from_installed()
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_internal/operations/check.py", line 50, in create_package_set_from_installed
package_set[name] = PackageDetails(dist.version, dist.requires())
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 2736, in requires
dm = self._dep_map
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 3023, in _dep_map
self.__dep_map = self._compute_dependencies()
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 3032, in _compute_dependencies
for req in self._parsed_pkg_info.get_all('Requires-Dist') or []:
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 3014, in _parsed_pkg_info
metadata = self.get_metadata(self.PKG_INFO)
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 1420, in get_metadata
value = self._get(path)
File "/home/pratik/anaconda3/lib/python3.7/site-packages/pip/_vendor/pkg_resources/init.py", line 1616, in _get
with open(path, 'rb') as stream:
FileNotFoundError: [Errno 2] No such file or directory: '/home/pratik/anaconda3/lib/python3.7/site-packages/rsa-4.0.dist-info/METADATA'

[xavfernandez]

This looks like a duplicate of #8676.
Cf #8676 (comment) for more information.