Installing Numpy on Raspberry Pi

[koepjo]

Hi!

I'm trying to use numpy with python3 on my Rasspberry Pi, but I'm not able to import the module after I installed it with sudo apt install python3-numpy, see below.

Installing numpy:
pi@raspberrypi:~ $ sudo apt install python3-numpy
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
gfortran python-numpy-doc python3-dev python3-nose python3-numpy-dbg
The following NEW packages will be installed:
python3-numpy
0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
Need to get 0 B/1,693 kB of archives.
After this operation, 9,492 kB of additional disk space will be used.
Selecting previously unselected package python3-numpy.
(Reading database ... 129861 files and directories currently installed.)
Preparing to unpack .../python3-numpy_1%3a1.12.1-3_armhf.deb ...
Unpacking python3-numpy (1:1.12.1-3) ...
Setting up python3-numpy (1:1.12.1-3) ...
Processing triggers for man-db (2.7.6.1-2) ...

Afterwards I try to import numpy, but it fails:
pi@raspberrypi:~ $ python3
Python 3.6.3 (default, Mar 28 2020, 15:16:40)
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'

What am I doing wrong? Could you please help me?

Tahnk's in advance,

Johannes

[micseydel]

Why not use pip?

I wouldn't be surprised if you have two Python 3 versions installed on your system, and that's the issue. I bet this would work:

$ python3 -m pip install numpy

[koepjo]

Why not use pip?

I wouldn't be surprised if you have two Python 3 versions installed on your system, and that's the issue. I bet this would work:

$ python3 -m pip install numpy

Thank's alot! Unfortimateöy aösp üip fials on my Raspi:

pi@raspberrypi:~ $ sudo python3 -m pip install --index-url=https://pypi.python.org/simple/   numpy

Error:
  Could not fetch URL https://pypi.python.org/simple/numpy/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. 

What could I do?

Thanks in advance ! Johannes

[snippsat]

Try this then try to install again.

python3 -m pip install --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org --upgrade pip

pip3 can also work alone,may need to install it.

# Install
sudo apt-get update
sudo apt install python3-pip

# Test with:
pip3 -V 

# Not using sudo
pip3 install --user numpy