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Note upfront: I tried following suggestions in other threads, but so far, haven't found anything that helps (1, 2)

I received a pandas file that I would like to run on my machine. In the beginning, the code references the sklearn package.

import re

from sklearn.decomposition import FactorAnalysis

from sklearn import svm

I do, however, get the following error when running this cell:

ModuleNotFoundError: No module named 'sklearn.decomposition'

I do have the scikit_learn-0.19.0-py3.6.egg-info and sklearn packages in my Python directory, so I'm not sure why it doesn't work. I tried reinstalling it, but both...

conda install scikit-learn

...and...

pip install scikit-learn

...don't work. The former crashes my Python (pop-up window telling my it has crashed), the latter produces a bunch of error messages:

>pip install scikit-learn

Requirement already satisfied: scikit-learn in c:programdata...libsite-packages

Exception:

Traceback (most recent call last):

  File "C:ProgramData...libsite-packagespipbasecommand.py", line 215, in main

    status = self.run(options, args)

  File "C:ProgramData...libsite-packagespipcommandsinstall.py", line 335, in run

    wb.build(autobuilding=True)

  File "C:ProgramData...libsite-packagespipwheel.py", line 749, in build

    self.requirement_set.prepare_files(self.finder)

  File "C:ProgramData...libsite-packagespipreqreq_set.py", line 380, in prepare_files

    ignore_dependencies=self.ignore_dependencies))

  File "C:ProgramData...libsite-packagespipreqreq_set.py", line 666, in _prepare_file

    check_dist_requires_python(dist)

  File "C:ProgramData...libsite-packagespiputilspackaging.py", line 48, in check_dist_requires_python

    feed_parser.feed(metadata)

  File "C:ProgramData...libemailfeedparser.py", line 175, in feed

    self._input.push(data)

  File "C:ProgramData...libemailfeedparser.py", line 103, in push

    self._partial.write(data)

TypeError: string argument expected, got 'NoneType'

You are using pip version 9.0.1, however version 18.1 is available.

You should consider upgrading via the 'python -m pip install --upgrade pip' command.

Any idea how I can get it to work? Thanks

Try running that last command to upgrade pip first?

pip install --upgrade pip

And then install scikitlearn afterwards. And possibly try this depending on what version of python you're using in your environment:

pip3 install scikit-learn

Solved it.

• Managed to roll-back to pip v9 using this thread.


• Uninstalled scikit-learn (which was v0.19). Had to use Admin mode to avoid the PermissionError mentioned before


• Installed it again (which was v0.2)

Code works now, thanks all who contributed.

If you are on linux...

1). download anaconda https://www.anaconda.com/download/#download

2). go to where the file is downloaded and type bash Anaconda-latest-Linux-x86_64.sh

The new anaconda already comes with scikit-learn installed.

If you need an older version of python like I did you can install that version by typing

conda install python=3.6