can't install python pacakges

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I was installing the package "transformers" and its dependencies.

pip install transfomers
Collecting transformers
  Downloading https://files.pythonhosted.org/packages/98/87/ef312eef26f5cecd8b17ae9654cdd8d1fae1eb6dbd87257d6d73c128a4d0/transformers-4.3.2-py3-none-any.whl (1.8MB)
     |████████████████████████████████| 1.8MB 726kB/s
Collecting regex!=2019.12.17 (from transformers)
  Downloading https://files.pythonhosted.org/packages/4f/3f/40c8db23e022ccc9eb9fc0f39202af49c8614b22990b2e7129c2543f2da5/regex-2020.11.13-cp37-cp37m-win_amd64.whl (269kB)
     |████████████████████████████████| 276kB 3.3MB/s
Requirement already satisfied: tqdm>=4.27 in c:\programdata\anaconda3\lib\site-packages (from transformers) (4.36.1)
Requirement already satisfied: filelock in c:\programdata\anaconda3\lib\site-packages (from transformers) (3.0.12)
Collecting sacremoses (from transformers)
  Downloading https://files.pythonhosted.org/packages/7d/34/09d19aff26edcc8eb2a01bed8e98f13a1537005d31e95233fd48216eed10/sacremoses-0.0.43.tar.gz (883kB)
     |████████████████████████████████| 890kB 3.2MB/s
Requirement already satisfied: importlib-metadata; python_version < "3.8" in c:\programdata\anaconda3\lib\site-packages (from transformers) (0.23)
Collecting numpy>=1.17 (from transformers)
  Downloading https://files.pythonhosted.org/packages/3b/8f/68b72c57e59591925432f4615309732d5fc5ec0bb0890540e2aa1557172f/numpy-1.20.1-cp37-cp37m-win_amd64.whl (13.6MB)
     |████████████████████████████████| 13.6MB 2.2MB/s
Requirement already satisfied: packaging in c:\programdata\anaconda3\lib\site-packages (from transformers) (19.2)
Collecting tokenizers<0.11,>=0.10.1 (from transformers)
  Downloading https://files.pythonhosted.org/packages/cc/3a/261b99d6815f6afdd2d35b6420d524305daa17bf430c420dca0115bd1c6c/tokenizers-0.10.1-cp37-cp37m-win_amd64.whl (2.0MB)
     |████████████████████████████████| 2.0MB ...
Requirement already satisfied: requests in c:\programdata\anaconda3\lib\site-packages (from transformers) (2.22.0)
Requirement already satisfied: six in c:\programdata\anaconda3\lib\site-packages (from sacremoses->transformers) (1.12.0)
Requirement already satisfied: click in c:\programdata\anaconda3\lib\site-packages (from sacremoses->transformers) (7.0)
Requirement already satisfied: joblib in c:\programdata\anaconda3\lib\site-packages (from sacremoses->transformers) (0.13.2)
Requirement already satisfied: zipp>=0.5 in c:\programdata\anaconda3\lib\site-packages (from importlib-metadata; python_version < "3.8"->transformers) (0.6.0)
Requirement already satisfied: pyparsing>=2.0.2 in c:\programdata\anaconda3\lib\site-packages (from packaging->transformers) (2.4.2)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in c:\programdata\anaconda3\lib\site-packages (from requests->transformers) (3.0.4)
Requirement already satisfied: certifi>=2017.4.17 in c:\programdata\anaconda3\lib\site-packages (from requests->transformers) (2019.9.11)
Requirement already satisfied: urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 in c:\programdata\anaconda3\lib\site-packages (from requests->transformers) (1.24.2)
Requirement already satisfied: idna<2.9,>=2.5 in c:\programdata\anaconda3\lib\site-packages (from requests->transformers) (2.8)
Requirement already satisfied: more-itertools in c:\programdata\anaconda3\lib\site-packages (from zipp>=0.5->importlib-metadata; python_version < "3.8"->transformers) (7.2.0)
Building wheels for collected packages: sacremoses
  Building wheel for sacremoses (setup.py) ... done
  Created wheel for sacremoses: filename=sacremoses-0.0.43-cp37-none-any.whl size=893262 sha256=ff8d68661e9c56c1a7509788a1dfe33e8ccb54968ab9959f01dc364ef08e48a8
  Stored in directory: C:\Users\DSP\AppData\Local\pip\Cache\wheels\29\3c\fd\7ce5c3f0666dab31a50123635e6fb5e19ceb42ce38d4e58f45
Successfully built sacremoses

However, suddenly the following error appeared:

ERROR: Error checking for conflicts.
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3012, in _dep_map
    return self.__dep_map
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2806, in __getattr__
    raise AttributeError(attr)
AttributeError: _DistInfoDistribution__dep_map

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3003, in _parsed_pkg_info
    return self._pkg_info
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2806, in __getattr__
    raise AttributeError(attr)
AttributeError: _pkg_info

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_internal\commands\install.py", line 517, in _warn_about_conflicts
    package_set, _dep_info = check_install_conflicts(to_install)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_internal\operations\check.py", line 110, in check_install_conflicts
    package_set, _ = create_package_set_from_installed()
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_internal\operations\check.py", line 49, in create_package_set_from_installed
    package_set[name] = PackageDetails(dist.version, dist.requires())
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2727, in requires
    dm = self._dep_map
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3014, in _dep_map
    self.__dep_map = self._compute_dependencies()
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3023, in _compute_dependencies
    for req in self._parsed_pkg_info.get_all('Requires-Dist') or []:
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3005, in _parsed_pkg_info
    metadata = self.get_metadata(self.PKG_INFO)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 1419, in get_metadata
    value = self._get(self._fn(self.egg_info, name))
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 1607, in _get
    with open(path, 'rb') as stream:
FileNotFoundError: [Errno 2] No such file or directory: 'c:\\programdata\\anaconda3\\lib\\site-packages\\google_pasta-0.1.7.dist-info\\METADATA'
Installing collected packages: regex, sacremoses, numpy, tokenizers, transformers
  Found existing installation: numpy 1.16.5
    Uninstalling numpy-1.16.5:
ERROR: Could not install packages due to an EnvironmentError: [WinError 5] Access is denied: 'c:\\programdata\\anaconda3\\lib\\site-packages\\numpy\\compat\\py3k.py'
Consider using the `--user` option or check the permissions.


C:\Users\DSP>pip install regex
Requirement already satisfied: regex in c:\programdata\anaconda3\lib\site-packages (2020.11.13)
ERROR: Error checking for conflicts.
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3012, in _dep_map
    return self.__dep_map
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2806, in __getattr__
    raise AttributeError(attr)
AttributeError: _DistInfoDistribution__dep_map

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3003, in _parsed_pkg_info
    return self._pkg_info
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2806, in __getattr__
    raise AttributeError(attr)
AttributeError: _pkg_info

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_internal\commands\install.py", line 517, in _warn_about_conflicts
    package_set, _dep_info = check_install_conflicts(to_install)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_internal\operations\check.py", line 110, in check_install_conflicts
    package_set, _ = create_package_set_from_installed()
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_internal\operations\check.py", line 49, in create_package_set_from_installed
    package_set[name] = PackageDetails(dist.version, dist.requires())
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2727, in requires
    dm = self._dep_map
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3014, in _dep_map
    self.__dep_map = self._compute_dependencies()
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3023, in _compute_dependencies
    for req in self._parsed_pkg_info.get_all('Requires-Dist') or []:
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 3005, in _parsed_pkg_info
    metadata = self.get_metadata(self.PKG_INFO)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 1419, in get_metadata
    value = self._get(self._fn(self.egg_info, name))
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 1607, in _get
    with open(path, 'rb') as stream:
FileNotFoundError: [Errno 2] No such file or directory: 'c:\\programdata\\anaconda3\\lib\\site-packages\\google_pasta-0.1.7.dist-info\\METADATA'

Now, even whenever I want to install any packages, the same error appears. Also, when I want to install the packages "tokenizers", this is what happens:

pip install tekenizers
Collecting tekenizers
  ERROR: Could not find a version that satisfies the requirement tekenizers (from versions: none)
ERROR: No matching distribution found for tekenizerspip install tekenizers
Collecting tekenizers
  ERROR: Could not find a version that satisfies the requirement tekenizers (from versions: none)
ERROR: No matching distribution found for tekenizers

How should I handle this problem? It seems that the package "transformers" has not been installed either.

package python
1 Answers

Such errors can be caused by a package being installed by one provider (say, conda) but subsequently removed by pip. Whereas pip may uninstall it, it may not fully remove all associated metadata files that conda additionally maintains, making conda think the package exists, but in a broken format (and vice versa for using conda to remove pip-installed packages).

To get around this, manually remove any remaining package-specific files from your disk for any packages giving you this error, e.g. rm -r c:\\programdata\\anaconda3\\lib\\site-packages\\google_pasta-* in a Unix-like shell.

user_24348750
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