无法使用 conda 卸载 keras

Question

I somehow installed keras twice( 2.2.4 and 2.3.1 ) with conda (at least I think I did). Now I am trying to uninstall both, the first one ( 2.2.4 ) I could uninstall with conda uninstall keras . But this doesn't work for the second one.

(base) keras_retinanet$ conda list keras
|# packages in environment at anaconda3:
│# Name                    Version                   Build  Channel
keras                     2.3.1                    pypi_0    pypi
keras-applications        1.0.8                      py_0  
keras-preprocessing       1.1.0                      py_1  
keras-resnet              0.1.0                    pypi_0    pypi
keras-retinanet           0.5.1                    pypi_0    pypi
(base) keras_retinanet$ conda uninstall keras
Collecting package metadata (repodata.json): done
Solving environment: failed
PackagesNotFoundError: The following packages are missing from the target environment:
- keras

How can I uninstall the second one?

I already tried to uninstall keras with pip3:

WARNING: Skipping keras as it is not installed.

And when importing keras in python I get this path:

>>> keras.__path__
_NamespacePath(['.../anaconda3/lib/python3.7/site-packages/keras'])

Thanks

Answer 1

One option, when the package is installed by pip (that's what the channel pypi indicates) is to enable Conda to directly manipulate PyPI packages by enabling the pip_interop_enabled configuration option . You can do this temporarily via:

CONDA_PIP_INTEROP_ENABLED=1 conda remove -n base keras

or you can turn this on globally

conda config --set pip_interop_enabled True
conda remove -n base keras

Just be aware that this is an experimental option, and I still strongly encourage following the best practice recommendations found in " Using Pip in a Conda Environment ".

Answer 2

I'd recommend trying a couple of things:

1. do a conda deactivate && conda activate base . In my experience, conda can get into a bad state and this can help(even in the base environment). Then pip uninstall keras

2. If that doesn't work, you can try manually getting the path to your conda-installed pip and use that to uninstall keras .

Hope it helps.