Installing An Old Version Of Scikit-learn
Solution 1:
Tackling your issues one at a time:
python -m pip install scikit-learn==0.18
fails
This is probably due to the fact that scikit-learn==0.18
, if you check on pypi only has whl
files for python 3.5 and 2.7 for windows, therefore pip
downloads the source distribution and then fails in compiling it, probably because it doesn't work with newer python versions
The following packages are not available from current channels
This happens, because scikit-learn==18.0
simply does not exist in the default conda
channels. On my win64 machine, the oldesst version that I can install is 19.0
(You can check by typing conda search scikit-learn
in the cmd
), so unfortunately no way to install using the default conda
channels. There is a channel called free
(found through the anaconda website) that has scikit-learn 18.0, so you could install with:
conda install -c free scikit-learn
To also make sure that the python version is compatible, I would just create a fitting environment:
conda create-n py35 -c free scikit-learn=0.18.0
Solution 2:
I have a guess about what it's happening and I think you will find you answear here:
First let's check the python version installed within your system:
python --version
> Python 3.8.0
If you're ready set and updated this should be your current python version, and I guess here lies the problem. You can check sickit-learn versions from its official pypi distribution page here. If you check the docs you will see that the package was meant to 2.7 or 3.5 python distributions.
So to run your code I guess the best way would be to use virtualenv or virtualenvwrapper (my personal choice) where you can create a clean env for your tests.
# On your terminal# First let's check if python2 is installed
python2 --version > Python 2.7.17
# and pip
python2 -m pip --version
> pip 19.3 from /usr/lib/python2.7/site-packages/pip (python 2.7)
# Now create a virtual env using virtualenvwrapper and python2 as our main pythonmkdir py2
mkvirtualenv -p python2 -a py2 py2
# After that the python command will be binded to your python2 installation
python --version
> Python 2.7.17
# Now lets install sckit lib
python -m pip install scikit-learn==0.18
python -m pip freeze
> DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
> scikit-learn==0.18
If everything is ok now you can run your code with no problems!
Remember!!!! Python 2 is deprecated and you should update your code to use a more recent python distribution.
Also, virtualenv is a good practice when working with python, if you don't know it take your time to set up!
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