apt-get install python3-numpy doesn't install numpy on python3, but installed on python2.7

Question

I'm trying to install numpy for python3, and I used sudo apt-get install python3-numpy to install numpy as I use Jetson tx2.

Although the installation is successful, but numpy is installed on python2.7 not python3. How can I solve it?

How did you determine that it was installed in python 2.7 and not in 3? — Dr. Snoopy, Jan 19 '20 at 11:13
There is no way `python3-numpy` will install anything for Python 2. Voting to close as unreproducible. — tripleee, Jan 19 '20 at 11:20
because numpy is imported successful on python2.7, but not on python3 @MatiasValdenegro — Danny Lau, Jan 19 '20 at 13:33
Are you using the same python interpreter as the python3-numpy package? Can you give a link to the actual package you installed? — Dr. Snoopy, Jan 19 '20 at 13:49

score 1 · Accepted Answer · answered Jan 31 '20 at 05:25

Actually when you flash your Jetson TX2 with Jetpack (version), numpy package is present for Python2 by default and not for Python3.
In order to install numpy for Python3 Please follow the steps given below:-
1. Check if you have pip3 installed for Python3. If not install pip3.
sudo apt install python3-pip
2. Then using pip3 install numpy
pip3 install numpy

After installation check the location: /usr/local/lib/python3.6/dist-packages you will find numpy installed for Python3
Hope this helps!

dgp · Answer 2 · 2020-01-19T13:59:38.430

-1

You can try using the python3 package manager :

pip3 install --user numpy

edited Jan 19 '20 at 13:59

answered Jan 19 '20 at 10:55

dgp

683
3
13

This is very bad advice, do not run pip using sudo. – Dr. Snoopy Jan 19 '20 at 13:48
@MatiasValdenegro Good observation, I corrected my answer – dgp Jan 19 '20 at 13:53

Charnel · Answer 3 · 2020-01-19T13:58:29.690

-1

I think this is because your default interpreter is Py v2.7 Check this by runnin in console:

python -V

Then you can specify Py3 installation as was commented above:

pip3 install numpy

Note: Do not run this command with sudo because it will run setup.py with sudo or

in other words - an arbitraty upload a malicious project on PyPI this is a hight risk action.

edited Jan 19 '20 at 13:58

answered Jan 19 '20 at 11:09

Charnel

4,222
2
16
28

Again, bad advice to run pip with sudo. – Dr. Snoopy Jan 19 '20 at 13:51
@MatiasValdenegro, this is true, thanks. I corrected an answer. – Charnel Jan 19 '20 at 13:59

apt-get install python3-numpy doesn't install numpy on python3, but installed on python2.7

3 Answers3