Python 3 Luma can't be found

[scargill]

[scargill]

Hi I'm having troublke getting LUMA started, I've used it msany times in the past.

I'm using a Raspberry Pi 4 - with Buster - fully up to date. I'm using sn SSD1306 display.

I have the simplest test page and I have Python 2.7 and 3.7

pi@rpi419buster:~:17:05[0]> python crap.py
Traceback (most recent call last):
  File "crap.py", line 1, in <module>
    from luma.core.interface.serial import i2c, spi, pcf8574
ImportError: No module named luma.core.interface.serial

trying python3

pi@rpi419buster:~:17:05[130]> python3 crap.py
Traceback (most recent call last):
  File "crap.py", line 1, in <module>
    from luma.core.interface.serial import i2c, spi, pcf8574
ModuleNotFoundError: No module named 'luma'
pi@rpi419buster:~:17:06[1]>

Python3 says no luma yet I used PIP3 show and it says yes?

pi@rpi419buster:~:17:06[130]> pip3 show luma.core
Name: luma.core
Version: 2.0.1
Summary: A component library to support SBC display drivers
Home-page: https://github.com/rm-hull/luma.core
Author: Richard Hull
Author-email: richard.hull@destructuring-bind.org
License: MIT
Location: /usr/local/lib/python3.7/site-packages
Requires: pillow, pyftdi, RPI.GPIO, smbus2, spidev, deprecated, cbor2
Required-by: luma.oled
pi@rpi419buster:~:17:07[0]>

Any ideas?

Pete

[thijstriemstra]

python2 is not supported anymore, use python3.

[rm-hull]

Hi Pete, you installed as per the instructions here: https://luma-oled.readthedocs.io/en/latest/software.html?
Is there a package called luma installed? Try: pip3 show luma
If so, please remove it, and reinstall luma.oled
(ref rm-hull/luma.examples#118)

[scargill]

Thanks for the quick response - REALLY apperciated. Erm yes I installed (not from scratch as I had a working Adafruit version until it stopped working):

https://luma-oled.readthedocs.io/en/latest/software.html

And no there is no luma it seems - yet Luma.led was installed and I still get the problem. See below. Any pointers appreciated. I just want my SSD1306 working again.....

I even tried sudo python - same result...

pi@rpi419buster:~:19:20[130]> pip3 show luma
WARNING: Package(s) not found: luma
pi@rpi419buster:~:19:20[1]>

[scargill]

python2 is not supported anymore, use python3.

I tried. No joy, just replied to Richard...

[scargill]

pip3 show luma.oled shows v 3.8.1 and pip3 show luma.core shows v2.0.1 - yet python3
crap.py - returns - modulenotfounderror: no module named luma.

[rm-hull]

If you run ls -lR /usr/local/lib/python3.7/dist-packages/luma*, could you paste the output here please

[scargill]

Just checked Richard - there is /usr/local/lib/python3.7/dist-packages/ but nothing in it

in /usr/local/lib/python3.7/site-packages there is a TON of stuff including luma, luma-core-2.01.dist-info and luma.oled-3.8.1.dist-info

Does that help? and yes I did follow inthe instructions for install...

[thijstriemstra]

@scargill try ls -lR /usr/local/lib/python3.7/site-packages/luma*

[scargill]

Thanks Thijs

Here is the output - as I said, nothing at ALL in /usr/local/lib/python3.7/dist-packages

pi@rpi419buster:~:12:38[0]> ls -lR /usr/local/lib/python3.7/site-packages/luma*
-rw-r--r-- 1 root staff  529 Nov 20 16:47 /usr/local/lib/python3.7/site-packages/luma.core-2.0.1-py3.8-nspkg.pth
-rw-r--r-- 1 root staff  529 Nov 20 16:47 /usr/local/lib/python3.7/site-packages/luma.oled-3.8.1-py3.8-nspkg.pth

/usr/local/lib/python3.7/site-packages/luma:
total 8
drwxr-sr-x 5 root staff 4096 Nov 20 16:47 core
drwxr-sr-x 4 root staff 4096 Nov 20 16:47 oled

/usr/local/lib/python3.7/site-packages/luma/core:
total 152
-rw-r--r-- 1 root staff  2974 Nov 20 16:47 ansi_color.py
-rw-r--r-- 1 root staff 24322 Nov 20 16:47 bitmap_font.py
-rw-r--r-- 1 root staff 16343 Nov 20 16:47 cmdline.py
-rw-r--r-- 1 root staff   348 Nov 20 16:47 const.py
-rw-r--r-- 1 root staff  9170 Nov 20 16:47 device.py
-rw-r--r-- 1 root staff   873 Nov 20 16:47 error.py
-rw-r--r-- 1 root staff  5184 Nov 20 16:47 framebuffer.py
-rw-r--r-- 1 root staff  5157 Nov 20 16:47 image_composition.py
-rw-r--r-- 1 root staff   134 Nov 20 16:47 __init__.py
drwxr-sr-x 3 root staff  4096 Nov 20 16:47 interface
drwxr-sr-x 3 root staff  4096 Nov 20 16:47 legacy
-rw-r--r-- 1 root staff  1131 Nov 20 16:47 lib.py
-rw-r--r-- 1 root staff  2559 Nov 20 16:47 mixin.py
drwxr-sr-x 2 root staff  4096 Nov 20 16:47 __pycache__
-rw-r--r-- 1 root staff  1727 Nov 20 16:47 render.py
-rw-r--r-- 1 root staff  8886 Nov 20 16:47 sprite_system.py
-rw-r--r-- 1 root staff  1312 Nov 20 16:47 threadpool.py
-rw-r--r-- 1 root staff  3920 Nov 20 16:47 util.py
-rw-r--r-- 1 root staff 21085 Nov 20 16:47 virtual.py

/usr/local/lib/python3.7/site-packages/luma/core/interface:
total 44
-rw-r--r-- 1 root staff   109 Nov 20 16:47 __init__.py
-rw-r--r-- 1 root staff  4147 Nov 20 16:47 parallel.py
drwxr-sr-x 2 root staff  4096 Nov 20 16:47 __pycache__
-rw-r--r-- 1 root staff 27439 Nov 20 16:47 serial.py

/usr/local/lib/python3.7/site-packages/luma/core/interface/__pycache__:
total 40
-rw-r--r-- 1 root staff   157 Nov 20 16:47 __init__.cpython-37.pyc
-rw-r--r-- 1 root staff  4172 Nov 20 16:47 parallel.cpython-37.pyc
-rw-r--r-- 1 root staff 27813 Nov 20 16:47 serial.cpython-37.pyc

/usr/local/lib/python3.7/site-packages/luma/core/legacy:
total 100
-rw-r--r-- 1 root staff 90426 Nov 20 16:47 font.py
-rw-r--r-- 1 root staff  3138 Nov 20 16:47 __init__.py
drwxr-sr-x 2 root staff  4096 Nov 20 16:47 __pycache__

/usr/local/lib/python3.7/site-packages/luma/core/legacy/__pycache__:
total 40
-rw-r--r-- 1 root staff 33554 Nov 20 16:47 font.cpython-37.pyc
-rw-r--r-- 1 root staff  3339 Nov 20 16:47 __init__.cpython-37.pyc

/usr/local/lib/python3.7/site-packages/luma/core/__pycache__:
total 144
-rw-r--r-- 1 root staff  2614 Nov 20 16:47 ansi_color.cpython-37.pyc
-rw-r--r-- 1 root staff 20963 Nov 20 16:47 bitmap_font.cpython-37.pyc
-rw-r--r-- 1 root staff 13730 Nov 20 16:47 cmdline.cpython-37.pyc
-rw-r--r-- 1 root staff   520 Nov 20 16:47 const.cpython-37.pyc
-rw-r--r-- 1 root staff 10388 Nov 20 16:47 device.cpython-37.pyc
-rw-r--r-- 1 root staff  1575 Nov 20 16:47 error.cpython-37.pyc
-rw-r--r-- 1 root staff  4795 Nov 20 16:47 framebuffer.cpython-37.pyc
-rw-r--r-- 1 root staff  6039 Nov 20 16:47 image_composition.cpython-37.pyc
-rw-r--r-- 1 root staff   168 Nov 20 16:47 __init__.cpython-37.pyc
-rw-r--r-- 1 root staff  1015 Nov 20 16:47 lib.cpython-37.pyc
-rw-r--r-- 1 root staff  2826 Nov 20 16:47 mixin.cpython-37.pyc
-rw-r--r-- 1 root staff  1798 Nov 20 16:47 render.cpython-37.pyc
-rw-r--r-- 1 root staff  8655 Nov 20 16:47 sprite_system.cpython-37.pyc
-rw-r--r-- 1 root staff  1690 Nov 20 16:47 threadpool.cpython-37.pyc
-rw-r--r-- 1 root staff  6319 Nov 20 16:47 util.cpython-37.pyc
-rw-r--r-- 1 root staff 21644 Nov 20 16:47 virtual.cpython-37.pyc

/usr/local/lib/python3.7/site-packages/luma/oled:
total 72
-rw-r--r-- 1 root staff 59895 Nov 20 16:47 const.py
drwxr-sr-x 3 root staff  4096 Nov 20 16:47 device
-rw-r--r-- 1 root staff   258 Nov 20 16:47 __init__.py
drwxr-sr-x 2 root staff  4096 Nov 20 16:47 __pycache__

/usr/local/lib/python3.7/site-packages/luma/oled/device:
total 64
-rw-r--r-- 1 root staff  3134 Nov 20 16:47 color.py
-rw-r--r-- 1 root staff  1139 Nov 20 16:47 framebuffer_mixin.py
-rw-r--r-- 1 root staff  4567 Nov 20 16:47 greyscale.py
-rw-r--r-- 1 root staff 41781 Nov 20 16:47 __init__.py
drwxr-sr-x 2 root staff  4096 Nov 20 16:47 __pycache__

/usr/local/lib/python3.7/site-packages/luma/oled/device/__pycache__:
total 52
-rw-r--r-- 1 root staff  3370 Nov 20 16:47 color.cpython-37.pyc
-rw-r--r-- 1 root staff  1253 Nov 20 16:47 framebuffer_mixin.cpython-37.pyc
-rw-r--r-- 1 root staff  4552 Nov 20 16:47 greyscale.cpython-37.pyc
-rw-r--r-- 1 root staff 35632 Nov 20 16:47 __init__.cpython-37.pyc

/usr/local/lib/python3.7/site-packages/luma/oled/__pycache__:
total 20
-rw-r--r-- 1 root staff 15799 Nov 20 16:47 const.cpython-37.pyc
-rw-r--r-- 1 root staff   301 Nov 20 16:47 __init__.cpython-37.pyc

/usr/local/lib/python3.7/site-packages/luma.core-2.0.1.dist-info:
total 52
-rw-r--r-- 1 root staff     4 Nov 20 16:47 INSTALLER
-rw-r--r-- 1 root staff  1123 Nov 20 16:47 LICENSE.rst
-rw-r--r-- 1 root staff 26483 Nov 20 16:47 METADATA
-rw-r--r-- 1 root staff     5 Nov 20 16:47 namespace_packages.txt
-rw-r--r-- 1 root staff  3452 Nov 20 16:47 RECORD
-rw-r--r-- 1 root staff     5 Nov 20 16:47 top_level.txt
-rw-r--r-- 1 root staff   110 Nov 20 16:47 WHEEL

/usr/local/lib/python3.7/site-packages/luma.oled-3.8.1.dist-info:
total 52
-rw-r--r-- 1 root staff     4 Nov 20 16:47 INSTALLER
-rw-r--r-- 1 root staff  1123 Nov 20 16:47 LICENSE.rst
-rw-r--r-- 1 root staff 25522 Nov 20 16:47 METADATA
-rw-r--r-- 1 root staff     5 Nov 20 16:47 namespace_packages.txt
-rw-r--r-- 1 root staff  1610 Nov 20 16:47 RECORD
-rw-r--r-- 1 root staff     0 Nov 20 16:47 REQUESTED
-rw-r--r-- 1 root staff     5 Nov 20 16:47 top_level.txt
-rw-r--r-- 1 root staff   110 Nov 20 16:47 WHEEL
pi@rpi419buster:~:13:34[0]>

[scargill]

I even tried removing all references to luma anything from /usr/local/lib/python3.7/site-packages/
then followed the instructions here - https://luma-oled.readthedocs.io/en/latest/software.html

No further forward, "No module named 'luma' and /usr/local/lib/python3.7/dist-packages/ still remains empty

[rm-hull]

What version of pip3 is installed? try pip3 --version

I just realized that the help page says to use pip rather than pip3 (now corrected), so perhaps you could try the following, and then copy the output and paste it here again?

$ sudo -H pip3 install --upgrade --force-reinstall luma.oled

Lastly, what does the following display:

$ python3 -c "import sys; print('\n'.join(sys.path))"

[scargill]

pi@rpi419buster:~:09:34[0]> pip3 --version
pip 20.2.4 from /home/pi/.local/lib/python3.7/site-packages/pip (python 3.7)

Did the SUDO -H pip3 line above...
things happened - lots of uninstalls -
...
Successfully uninstalled luma.oled-3.8.1
Successfully installed RPI.GPIO-0.7.0 cbor2-5.2.0 deprecated-1.2.10 luma.core-2.0.1 luma.oled-3.8.1 pillow-8.0.1 pyftdi-0.52.0 pyserial-3.4 pyusb-1.1.0 smbus2-0.3.0 spidev-3.5 wrapt-1.12.1

BUT /usr/local/lib/python3.7/dist-packages remains empty

Finally...

pi@rpi419buster:~:09:39[130]> python3 -c "import sys; print('\n'.join(sys.path))"
/usr/lib/python37.zip
/usr/lib/python3.7
/usr/lib/python3.7/lib-dynload
/home/pi/.local/lib/python3.7/site-packages
/usr/local/lib/python3.7/dist-packages
/usr/lib/python3/dist-packages
pi@rpi419buster:~:09:40[0]>

[rm-hull]

Ok, I wonder if the cause is that pip3 has been installed locally (as evidenced from pip 20.2.4 from /home/pi/.local/lib/python3.7/site-packages/pip (python 3.7)). This may be the reason why your sys.path points to /home/pi/.local/lib/python3.7/site-packages rather than the one in /usr/local

In which case you could try installing the luma packages locally with (note no sudo here):

$ pip3 install --upgrade --force-reinstall luma.oled

I think the tldr here is that python packaging is still a mess... :(

[scargill]

Ok, I wonder if the cause is that pip3 has been installed locally (as evidenced from pip 20.2.4 from /home/pi/.local/lib/python3.7/site-packages/pip (python 3.7)). This may be the reason why your sys.path points to /home/pi/.local/lib/python3.7/site-packages rather than the one in /usr/local

In which case you could try installing the luma packages locally with (note no sudo here):

$ pip3 install --upgrade --force-reinstall luma.oled

I think the tldr here is that python packaging is still a mess... :(

Thanks - in the meantime I scrubbed my one file and went to Adafruit in case there were no answers... bad move. Now I've grabbed your examples - which have been updated since I last used them - I normally specify the display - ssd1306 using 128*32. It seems your examples use something called demo_opts which I apparently don;t have (but I DO) -I've run your latest suggestion, looked like it installed but apparently I need demo-opts to try anything. Any idea? Sorry.