Python3: Module not found

Question

I have installed numpy but shell says it is not installed. I have multiple python3 versions installed. I know it has to do something to point to the correct path, but I don't know how to do it. Both python3 and pip3 points python 3.6. I don't understand what the problem could be?

These may be helpful:

$ where python3                  
/home/subtleseeker/miniconda3/bin/python3
/usr/bin/python3
/usr/bin/python3

$ whereis python3
python3: /usr/bin/python3.6m 
/usr/bin/python3.6-config 
/usr/bin/python3 
/usr/bin/python3.6m-config 
/usr/bin/python3.6 
/usr/lib/x86_64-linux-gnu/python3.6 
/usr/lib/python3.7 
/usr/lib/python3 
/usr/lib/python3.6 
/etc/python3 
/etc/python3.6 
/usr/local/bin/python3.4m-config 
/usr/local/bin/python3.4 
/usr/local/bin/python3.4m 
/usr/local/lib/python3.4 
/usr/local/lib/python3.6 
/usr/include/python3.6m 
/usr/include/python3.6 
/usr/share/python3 
/home/subtleseeker/miniconda3/bin/python3.6m 
/home/subtleseeker/miniconda3/bin/python3.6-config 
/home/subtleseeker/miniconda3/bin/python3 
/home/subtleseeker/miniconda3/bin/python3.6m-
/home/subtleseeker/miniconda3/bin/
/usr/share/man/man1/python3.1.gz

$ pip3 --version
pip 18.0 from /usr/local/lib/python3.6/dist-packages/pip (python 3.6)

$ python3 --version
Python 3.6.5 :: Anaconda, Inc.

>>> import sys
>>> print(sys.path)
['', '/home/subtleseeker/miniconda3/lib/python36.zip', '/home/subtleseeker/miniconda3/lib/python3.6', '/home/subtleseeker/miniconda3/lib/python3.6/lib-dynload', '/home/subtleseeker/.local/lib/python3.6/site-packages', '/home/subtleseeker/miniconda3/lib/python3.6/site-packages']

The problem started when I installed miniconda. BTW I already had anaconda installed.

g3n35i5 · Accepted Answer · 2018-10-02 09:39:40Z

2

Have you already made sure that numpy is really installed with the python version you are using? You can do this with

$ [path_to_your_used_python_version] -m pip show numpy

If it is not installed, you can install it with

$ [path_to_your_used_python_version] -m pip install numpy

answered Oct 2, 2018 at 9:39

g3n35i5

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4 Comments

subtleseeker Over a year ago

Great! It did work. Could you explain where the version difference was coming and how to find that specific version? Any more info needed to find it? Do python3.6.5 and pip3.6 points to different places?

g3n35i5 Over a year ago

Pip is just a module like any other. It has to be installed for every Python version (2.x, 3.x) but also for special python installations, like anaconda etc.. Since you have installed python once natively and once via anaconda, you also need the module "numpy" in both installations. If my answer helped you, you can mark it as accepted.

subtleseeker Over a year ago

So, if I removed miniconda (which I installed after which the error started), would that lead back python using the previously installed modules?

g3n35i5 Over a year ago

Well possible, but only because there is only one Python version left. If you have several python versions installed (Python3 native and by Anaconda, you also have to install the modules separately, they are stored separately for each Python version. For example, in my case /usr/local/lib/<your-python-version>/dist-packages.

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