Trouble using numpy from the installation on headless raspberry pi about inky

[Gadgetoid]

But if I try to import the package, I still receive an error relating to python-numpy

By default virtual environments will ignore system installed packages.

You need to use the --system-site-packages switch.

Eg:

 python3 -m venv --system-site-packages ~/.virtualenvs/AAAAARRRGGHHHHHH

That said, I believe you can now re-install numpy into the virtual env and it will find the system libraries, since python3-numpy pulls them in as dependencies.

[helgibbons]

Have you tried the other suggestion - removing the pip version of numpy and installing the system version from apt?

pip3 uninstall numpy  # remove previously installed version
apt install python3-numpy

[theptrk]

Oh interesting, i tried apt install python-numpy but got this error

(env) patricktran@myraspberrypi:~ $ sudo apt install python-numpy
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package python-numpy is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python-numpy' has no installation candidate

Then I noticed you mentioned python3-numpy. It installed that ok.

But if I try to import the package, I still receive an error relating to python-numpy

(env) patricktran@myraspberrypi:~ $ python
^[[APython 3.11.2 (main, Mar 13 2023, 12:18:29) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from inky.auto import auto
Traceback (most recent call last):
  File "/home/patricktran/env/lib/python3.11/site-packages/inky/inky.py", line 8, in <module>
    import numpy
ModuleNotFoundError: No module named 'numpy'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/patricktran/env/lib/python3.11/site-packages/inky/__init__.py", line 3, in <module>
    from . import inky                            # noqa: F401
    ^^^^^^^^^^^^^^^^^^
  File "/home/patricktran/env/lib/python3.11/site-packages/inky/inky.py", line 10, in <module>
    raise ImportError('This library requires the numpy module\nInstall with: sudo apt install python-numpy')
ImportError: This library requires the numpy module
Install with: sudo apt install python-numpy

[RetroZelda]

i had this same problem and i had to apt install libopenblas-dev

[theptrk]

But if I try to import the package, I still receive an error relating to python-numpy

By default virtual environments will ignore system installed packages.

You need to use the --system-site-packages switch.

Eg:

 python3 -m venv --system-site-packages ~/.virtualenvs/AAAAARRRGGHHHHHH

That said, I believe you can now re-install numpy into the virtual env and it will find the system libraries, since python3-numpy pulls them in as dependencies.

It worked!

Now I get a different issue but I'll look into that separately. Thanks!

(env) patricktran@myraspberrypi:~ $ python
Python 3.11.2 (main, Mar 13 2023, 12:18:29) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from inky.auto import auto
>>> display = auto()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/patricktran/env/lib/python3.11/site-packages/inky/auto.py", line 83, in auto
    raise RuntimeError("No EEPROM detected! You must manually initialise your Inky board.")
RuntimeError: No EEPROM detected! You must manually initialise your Inky board.

Update: solved
I guess my device (Inky Impression 4" (7 colour ePaper/eInk HAT)) cannot use auto

from PIL import Image, ImageDraw, ImageFont
from inky.inky_uc8159 import Inky

# Initialize the Inky display
inky_display = Inky()