Install numpy on python3.3 - Install pip for python3 - numpy

Question

For python 3.2 I used sudo apt-get install python3.2-numpy.It worked.
What to do for python3.3? Nothing I could think of works. Same goes for scipy, etc.
Thanks.
Edit: this is how it looks like
radu#sunlit-inspired:~$ python3
Python 3.3.2 (default, Jul 3 2013, 10:17:40)
[GCC 4.6.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named 'numpy'

Answer 1

In the solution below I used python3.4 as binary, but it's safe to use with any version or binary of python. it works fine on windows too (except the downloading pip with wget obviously but just save the file locally and run it with python).
This is great if you have multiple versions of python installed, so you can manage external libraries per python version.
So first, I'd recommend get-pip.py, it's great to install pip:
wget https://bootstrap.pypa.io/get-pip.py
Then you need to install pip for your version of python, I have python3.4 so for me this is the command:
python3.4 get-pip.py
Now pip is installed for this version and in order to get libraries for python3.4 I have to use pip like this:
python3.4 -m pip
So if I want to install numpy I'd use :
python3.4 -m pip install numpy
Note that numpy is quite the heavy library. I thought my system was hanging and failing.
But using the verbose option, you can see that the system is fine :
python3.4 -m pip install numpy -v
This may tell you that you lack python.h but you can easily get it :
On RHEL (Red hat, CentOS, Fedora) it would be something like this:
yum install python34-devel
On debian-like (Debian, Ubuntu, Kali, ...) :
apt-get install python34-dev
Then rerun this :
python3.4 -m pip install numpy -v

Answer 2

From the terminal run:
sudo apt-get install python3-numpy
This package contains Numpy for Python 3.
For scipy:
sudo apt-get install python3-scipy
For for plotting graphs use pylab:
sudo apt-get install python3-matplotlib

Answer 3

The normal way to install Python libraries is with pip. Your way of installing it for Python 3.2 works because it's the system Python, and that's the way to install things for system-provided Pythons on Debian-based systems.
If your Python 3.3 is system-provided, you should probably use a similar command. Otherwise you should probably use pip.
I took my Python 3.3 installation, created a virtualenv and run pip install in it, and that seems to have worked as expected:
$ virtualenv-3.3 testenv
$ cd testenv
$ bin/pip install numpy
blablabl
$ bin/python3
Python 3.3.2 (default, Jun 17 2013, 17:49:21)
[GCC 4.6.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>>

Answer 4

I'm on Ubuntu 15.04. This seemed to work:
$ sudo pip3 install numpy
On RHEL this worked:
$ sudo python3 -m pip install numpy

Answer 5

My issue was the failure to import numpy into my python files. I was receiving the "ModuleNotFoundError: No module named 'numpy'". I ran into the same issue and I was not referencing python3 on the installation of numpy. I inputted the following into my terminal for OSX and my problems were solved:
python3 -m pip install numpy

Answer 6

On fedora/rhel/centos you need to
sudo yum install -y python3-devel
before
mkvirtualenv -p /usr/bin/python3.3 test-3.3
pip install numpy
otherwise you'll get
SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.