ImportError: No module named sklearn (Python)

Question

I wanna use scikit-learn. I have typed

pip install -U scikit-learn
pip3 install sklearn

to install it; but when i type

$ Python
>>> import sklearn

it returns

ImportError: No module named sklearn

I followed other tutorials, but it doesn't work. Furthermore, my enviroment returns this warning:

If you have installed scikit-learn from source, please do not forget to build the package before using it: run python setup.py install or make in the source directory.

What is the true code to type in the terminal? I tried to type python setup.py install in the terminal but it doesn't work

Answer 1

Make sure that pip and python are the same version. For example if you run pip for python 2.7, it will install the package only in 2.7, and if your python command point to for example python 3.3 interpreter, it will not have that package

Answer 2

you dont have the package scikit-learn installed, try this if you are in a terminal linux :

sudo pip install scikit-learn

if you want to install the package within your code use

import os 
os.system('sudo pip install scikit-learn')

Answer 3

尝试：

pip3 install scikit-learn

Answer 4

不仅对于这个包，而且对于几乎所有情况，如果pip install sklearn不起作用，请尝试使用python3 -m pip install sklearn 。

Answer 5

I think you havent install sklearn, try this on your python terminal:

pip install sklearn

and proceed with your code

Answer 6

this may happen that you have multiple versions of python and pip, do the following:

check your python version by typing:

    python --version 

for python 3.8, install sklearn using

    pip3.8 install sklearn

for python 3.7, install sklearn using

    pip3.7 install sklearn

for python 3.6, install sklearn using

    pip3.6 install sklearn

and so on ....

Answer 7

Had the same issue, solved with the following steps:

check python version with command:

$ python --version

if version is python 2.7, use:

$ sudo pip2 install <package_name>

of if the python version 3 is installed, use pip3 instead of pip2