Numpy unknown / Missing pip installation failed

[Loxitation]

> Traceback (most recent call last): File "/usr/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap self.run() File "/usr/lib/python3.7/multiprocessing/process.py", line 99, in run self._target(*self._args, **self._kwargs) File "/home/pi/s2lled/music_led_strip_control/server/libs/output_service.py", line 51, in start self._current_output = self._available_outputs[current_output_enum](self._device) File "/home/pi/s2lled/music_led_strip_control/server/libs/outputs/output_raspi.py", line 46, in __init__ raise RuntimeError('ws2811_init failed with code {0} ({1})'.format(resp, message)) RuntimeError: ws2811_init failed with code -5 (mmap() failed)

Also, I've installed numpy1.20.0, but it says numpy not found. Can you help me with that issue too? When I do python main.py it starts with the above error, when I say python3 main.py it says numpy not found. Already tried to reinstall numpy 3 times ._.

[TobKra96]

Hi, it looks like Python 3 doesn't know numpy. Have you installed numpy with the pip3command? sudo pip3 install -I numpy==1.17.0 You can see all installed packages with sudo pip3 list

[Loxitation]

Checked that, pip3 list finds numpy, got 1.20.0, downgraded to 1.17.0, same issue. Will try a fresh clean install on a clean pi and report back in the evening wether that worked or not.

[Teraskull]

@Loxitation Can you try to install the following:

sudo apt-get install python3-numpy python3-scipy

And then retry running main.py?

[Loxitation]

@Teraskull tried that just now, same issue. Sorry for the late reply, haven't got earlier to testing again.

@TobKra96 The clean install also throws the same error, no module named numpy. Error is still the following:

pi@raspberrypi:~/s2lled/music_led_strip_control/server $ sudo su root@raspberrypi:/home/pi/s2lled/music_led_strip_control/server# python3 main.py Traceback (most recent call last): File "main.py", line 8, in from libs.device_manager import DeviceManager File "/home/pi/s2lled/music_led_strip_control/server/libs/device_manager.py", line 1, in from libs.device import Device # pylint: disable=E0611, E0401 File "/home/pi/s2lled/music_led_strip_control/server/libs/device.py", line 3, in from libs.effect_service import EffectService File "/home/pi/s2lled/music_led_strip_control/server/libs/effect_service.py", line 5, in from libs.effects.effect_bars import EffectBars # pylint: disable=E0611, E04 01 File "/home/pi/s2lled/music_led_strip_control/server/libs/effects/effect_bars. py", line 1, in from libs.effects.effect import Effect # pylint: disable=E0611, E0401 File "/home/pi/s2lled/music_led_strip_control/server/libs/effects/effect.py", line 1, in from libs.color_service import ColorService # pylint: disable=E0611, E0401 File "/home/pi/s2lled/music_led_strip_control/server/libs/color_service.py", l ine 1, in import numpy as np ModuleNotFoundError: No module named 'numpy'

[TobKra96]

Can you check your installed python version? sudo python3 --version The version should be Python 3.7.3. Try sudo python3.7 main.py.

Edit: Maybe pip3 is not linked to python3. Try: sudo python3 -m pip install -I numpy==1.17.0

https://github.com/numpy/numpy/issues/15424

[Loxitation]

pi@raspberrypi:~ $ sudo python3 --version Python 3.7.0

@TobKra96 saved my night. pip3 was not linked to python3 as it seems. Sorry for bothering you with such stuff, still learning :D Thanks you verry verry much for your help! :)

[Loxitation]

So for all out there, to sum it up, @TobKra96 s last answer solved the issue. Pip3 was not linked to python3.

sudo python3 -m pip install -I numpy==1.17.0

solved the issue.