error with luma.led_matrix

[akaodin]

This is driving me nuts! I am trying to setup the environment for my led modules Max7219 but every time I try I get the msg:

"error in luma.led_matrix setup command: 'tests_require' must be a string or list of strings containing valid project/version requirement specifiers"

I have tried reinstalling python, python-dev, python-setuptools, and a few others. They all claim I have the latest version. Nothing seems to fix the problem. I am running raspbian on my Raspberry Pi 2.
Any and all suggestions would be greatly appreciated. Thx for any help you can offer or provide.

[B.Goode]

Any and all suggestions would be greatly appreciated.

Not a very profound suggestion, but worth a try:

Post the code you are attempting to run (being sure to use the forum code tag mark-up using the Code 'button' at the top of the message edit screen.)

Explain precisely how you are attempting to run that code.

Post the full text of the resulting error message and related traceback.

It would also save research effort to have a link to the download or tutorial you are following to set up your Max7219 led module.

[robbes]

Have you followed the installation instructions at https://github.com/rm-hull/luma.examples
and further comments at https://luma-led-matrix.readthedocs.io/ ... l#examples ?
The second URL isn't very useful, but if you download some of his examples you might find something to help.

[akaodin]

Downloaded setup from instructions in:

https://pypi.python.org/pypi/max7219

After downloading I then try to install w/ the following code:

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import re
import os
import sys
from io import open
from setuptools import setup


def read_file(fname, encoding='utf-8'):
with open(fname, encoding=encoding) as r:
return r.read()


def find_version(*file_paths):
fpath = os.path.join(os.path.dirname(__file__), *file_paths)
version_file = read_file(fpath)
version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
version_file, re.M)
if version_match:
return version_match.group(1)

err_msg = 'Unable to find version string in {}'.format(fpath)
raise RuntimeError(err_msg)


README = read_file('README.rst')
CONTRIB = read_file('CONTRIBUTING.rst')
CHANGES = read_file('CHANGES.rst')
version = find_version('luma', 'led_matrix', '__init__.py')
print( version )

needs_pytest = {'pytest', 'test', 'ptr'}.intersection(sys.argv)
pytest_runner = ['pytest-runner'] if needs_pytest else []
test_deps = [
'mock;python_version<"3.3"',
'pytest>=3.1',
'pytest-cov'
]

setup(
name="luma.led_matrix",
version=version,
author="Richard Hull",
author_email="[email protected]",
description="A library to drive a MAX7219 LED serializer (using SPI) and WS2812 NeoPixels (using DMA)",
long_description="\n\n".join([README, CONTRIB, CHANGES]),
license="MIT",
keywords=["raspberry pi", "rpi", "led", "max7219", "matrix", "seven segment", "7 segment", "neopixel", "ws2812", "ws281x"],
url="https://github.com/rm-hull/luma.led_matrix",
download_url="https://github.com/rm-hull/luma.led_matrix/tarball/" + version,
namespace_packages=["luma"],
packages=["luma.led_matrix"],
install_requires=["luma.core>=1.2.1"],
setup_requires=pytest_runner,
tests_require=test_deps,
extras_require={
':platform_machine=="armv7l" and platform_system=="Linux"': [
'ws2812', 'rpi_ws281x'
],
'docs': [
'sphinx >= 1.5.1'
],
'qa': [
'rstcheck',
'flake8'
],
'test': test_deps
},
zip_safe=False,
classifiers=[
"License :: OSI Approved :: MIT License",
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Education",
"Intended Audience :: Developers",
"Intended Audience :: Science/Research",
"Topic :: Education",
"Topic :: System :: Hardware",
"Topic :: System :: Hardware :: Hardware Drivers",
"Programming Language :: Python :: 2",
"Programming Language :: Python :: 2.7",
"Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.4",
"Programming Language :: Python :: 3.5",
"Programming Language :: Python :: 3.6",
"Operating System :: POSIX",
"Operating System :: Unix"
]
)

Actually got around the initial problem of test_requires by reverting to Python3. However, there is still a problem w/ setup:

no previously-included directories found matching 'doc/_build'
warning: no previously-included files matching '__pycache__' found under directory '*'
warning: no previously-included files matching '*.py[co]' found under directory '*'
warning: no previously-included files matching '*~' found under directory '*'
warning: no previously-included files matching '.coverage' found under directory '*'
warning: no previously-included files matching '.DS_Store' found under directory '*'
warning: no previously-included files matching '.ropeproject' found under directory '*'
warning: no files found matching '*.c'
warning: no files found matching '*.h'
warning: no files found matching '*.sh'
no previously-included directories found matching 'docs/_static'
warning: no previously-included files found matching '.appveyor.yml'
warning: no previously-included files found matching '.coveragerc'
warning: no previously-included files found matching '.codecov.yml'
warning: no previously-included files found matching '.editorconfig'
warning: no previously-included files found matching '.landscape.yaml'
warning: no previously-included files found matching '.travis'
warning: no previously-included files found matching '.travis/*'
warning: no previously-included files found matching 'build_children.sh'
warning: no previously-included files found matching 'tox.ini'
warning: no previously-included files matching '.git*' found anywhere in distribution
warning: no previously-included files matching '*.pyc' found anywhere in distribution
warning: no previously-included files matching '*.so' found anywhere in distribution


The headers or library files could not be found for jpeg,
a required dependency when compiling Pillow from source.

Please see the install instructions at:
https://pillow.readthedocs.io/en/latest ... ation.html

Traceback (most recent call last):
File "/tmp/easy_install-8cad5kkg/Pillow-5.1.0/setup.py", line 794, in <module>
File "/usr/local/lib/python3.4/dist-packages/setuptools/__init__.py", line 129, in setup
return distutils.core.setup(**attrs)
File "/usr/lib/python3.4/distutils/core.py", line 148, in setup
dist.run_commands()
File "/usr/lib/python3.4/distutils/dist.py", line 955, in run_commands
self.run_command(cmd)
File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/bdist_egg.py", line 172, in run
cmd = self.call_command('install_lib', warn_dir=0)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/bdist_egg.py", line 158, in call_command
self.run_command(cmdname)
File "/usr/lib/python3.4/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/install_lib.py", line 11, in run
self.build()
File "/usr/lib/python3.4/distutils/command/install_lib.py", line 109, in build
self.run_command('build_ext')
File "/usr/lib/python3.4/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/lib/python3.4/distutils/command/build_ext.py", line 339, in run
self.build_extensions()
File "/tmp/easy_install-8cad5kkg/Pillow-5.1.0/setup.py", line 582, in build_extensions
__main__.RequiredDependencyException: jpeg

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 154, in save_modules
yield saved
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 195, in setup_context
yield
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 250, in run_setup
_execfile(setup_script, ns)
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 45, in _execfile
exec(code, globals, locals)
File "/tmp/easy_install-8cad5kkg/Pillow-5.1.0/setup.py", line 806, in <module>
__main__.RequiredDependencyException:

The headers or library files could not be found for jpeg,
a required dependency when compiling Pillow from source.

Please see the install instructions at:
https://pillow.readthedocs.io/en/latest ... ation.html



During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "./setup3.py", line 88, in <module>
"Operating System :: Unix"
File "/usr/local/lib/python3.4/dist-packages/setuptools/__init__.py", line 129, in setup
return distutils.core.setup(**attrs)
File "/usr/lib/python3.4/distutils/core.py", line 148, in setup
dist.run_commands()
File "/usr/lib/python3.4/distutils/dist.py", line 955, in run_commands
self.run_command(cmd)
File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/install.py", line 67, in run
self.do_egg_install()
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/install.py", line 117, in do_egg_install
cmd.run()
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 412, in run
self.easy_install(spec, not self.no_deps)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 654, in easy_install
return self.install_item(None, spec, tmpdir, deps, True)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 701, in install_item
self.process_distribution(spec, dist, deps)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 746, in process_distribution
[requirement], self.local_index, self.easy_install
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 774, in resolve
replace_conflicting=replace_conflicting
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 1057, in best_match
return self.obtain(req, installer)
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 1069, in obtain
return installer(requirement)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 673, in easy_install
return self.install_item(spec, dist.location, tmpdir, deps)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 699, in install_item
dists = self.install_eggs(spec, download, tmpdir)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 884, in install_eggs
return self.build_and_install(setup_script, setup_base)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 1152, in build_and_install
self.run_setup(setup_script, setup_base, args)
File "/usr/local/lib/python3.4/dist-packages/setuptools/command/easy_install.py", line 1138, in run_setup
run_setup(setup_script, args)
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 253, in run_setup
raise
File "/usr/lib/python3.4/contextlib.py", line 77, in __exit__
self.gen.throw(type, value, traceback)
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 195, in setup_context
yield
File "/usr/lib/python3.4/contextlib.py", line 77, in __exit__
self.gen.throw(type, value, traceback)
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 166, in save_modules
saved_exc.resume()
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 141, in resume
six.reraise(type, exc, self._tb)
File "/usr/local/lib/python3.4/dist-packages/setuptools/_vendor/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 154, in save_modules
yield saved
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 195, in setup_context
yield
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 250, in run_setup
_execfile(setup_script, ns)
File "/usr/local/lib/python3.4/dist-packages/setuptools/sandbox.py", line 45, in _execfile
exec(code, globals, locals)
File "/tmp/easy_install-8cad5kkg/Pillow-5.1.0/setup.py", line 806, in <module>
setuptools.sandbox.UnpickleableException: RequiredDependencyException('\n\nThe headers or library files could not be found for jpeg,\na required dependency when compiling Pillow from source.\n\nPlease see the install instructions at:\n https://pillow.readthedocs.io/en/latest ... n.html\n\n',)

When I try any of the examples I get the msg that it cannot find the module luma.led_matrix.device
but it does exist in /luma/led_matrix as device.py

example is as follows:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (c) 2017-18 Richard Hull and contributors
# See LICENSE.rst for details.

import re
import time
import argparse

from luma.led_matrix.device import max7219
from luma.core.interface.serial import spi, noop
from luma.core.render import canvas
from luma.core.virtual import viewport
from luma.core.legacy import text, show_message
from luma.core.legacy.font import proportional, CP437_FONT, TINY_FONT, SINCLAIR_FONT, LCD_FONT


def demo(n, block_orientation, rotate):
# create matrix device
serial = spi(port=0, device=0, gpio=noop())
device = max7219(serial, cascaded=n or 1, block_orientation=block_orientation, rotate=rotate or 0)
print("Created device")

# start demo
msg = "MAX7219 LED Matrix Demo"
print(msg)
show_message(device, msg, fill="white", font=proportional(CP437_FONT))
time.sleep(1)

msg = "Fast scrolling: Lorem ipsum dolor sit amet, consectetur adipiscing\
elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut\
enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut\
aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in\
voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint\
occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit\
anim id est laborum."
msg = re.sub(" +", " ", msg)
print(msg)
show_message(device, msg, fill="white", font=proportional(LCD_FONT), scroll_delay=0)

msg = "Slow scrolling: The quick brown fox jumps over the lazy dog"
print(msg)
show_message(device, msg, fill="white", font=proportional(LCD_FONT), scroll_delay=0.1)

print("Vertical scrolling")
words = [
"Victor", "Echo", "Romeo", "Tango", "India", "Charlie", "Alpha",
"Lima", " ", "Sierra", "Charlie", "Romeo", "Oscar", "Lima", "Lima",
"India", "November", "Golf", " "
]

virtual = viewport(device, width=device.width, height=len(words) * 8)
with canvas(virtual) as draw:
for i, word in enumerate(words):
text(draw, (0, i * 8), word, fill="white", font=proportional(CP437_FONT))

for i in range(virtual.height - device.height):
virtual.set_position((0, i))
time.sleep(0.05)

msg = "Brightness"
print(msg)
show_message(device, msg, fill="white")

time.sleep(1)
with canvas(device) as draw:
text(draw, (0, 0), "A", fill="white")

time.sleep(1)
for _ in range(5):
for intensity in range(16):
device.contrast(intensity * 16)
time.sleep(0.1)

device.contrast(0x80)
time.sleep(1)

msg = "Alternative font!"
print(msg)
show_message(device, msg, fill="white", font=SINCLAIR_FONT)

time.sleep(1)
msg = "Proportional font - characters are squeezed together!"
print(msg)
show_message(device, msg, fill="white", font=proportional(SINCLAIR_FONT))

# http://www.squaregear.net/fonts/tiny.shtml
time.sleep(1)
msg = "Tiny is, I believe, the smallest possible font \
(in pixel size). It stands at a lofty four pixels \
tall (five if you count descenders), yet it still \
contains all the printable ASCII characters."
msg = re.sub(" +", " ", msg)
print(msg)
show_message(device, msg, fill="white", font=proportional(TINY_FONT))

time.sleep(1)
msg = "CP437 Characters"
print(msg)
show_message(device, msg)

time.sleep(1)
for x in range(256):
with canvas(device) as draw:
text(draw, (0, 0), chr(x), fill="white")
time.sleep(0.1)


if __name__ == "__main__":
parser = argparse.ArgumentParser(description='matrix_demo arguments',
formatter_class=argparse.ArgumentDefaultsHelpFormatter)

parser.add_argument('--cascaded', '-n', type=int, default=1, help='Number of cascaded MAX7219 LED matrices')
parser.add_argument('--block-orientation', type=int, default=0, choices=[0, 90, -90], help='Corrects block orientation when wired vertically')
parser.add_argument('--rotate', type=int, default=0, choices=[0, 1, 2, 3], help='Rotate display 0=0°, 1=90°, 2=180°, 3=270°')

args = parser.parse_args()

try:
demo(args.cascaded, args.block_orientation, args.rotate)
except KeyboardInterrupt:
pass

Exact error is:
Traceback (most recent call last):
File "examples/matrix_demo.py", line 10, in <module>
from luma.led_matrix.device import max7219
ImportError: No module named 'luma.led_matrix'


Still stumped and hoping for more advice/suggestions. Thx.

[akaodin]

Tried various examples from github. All gave the same error:
Traceback (most recent call last):
File "examples/matrix_demo.py", line 10, in <module>
from luma.led_matrix.device import max7219
ImportError: No module named 'luma.led_matrix'

But it is located in
luma/led_matrix/device.py

No doubt it is something simple, but I just can't figure it out.

[B.Goode]

From my initial attempt to help:

Post the code you are attempting to run (being sure to use the forum code tag mark-up using the Code 'button' at the top of the message edit screen.)

Explain precisely how you are attempting to run that code.

The part in brackets is important for legibility of Python code in these forums. Would you consider retrospectively editting your own post?

Can you show an example of the entire command line, including the prompt, that you use to run the code?

The reference to 'reverting' to Python3 is strange - the code you have posted explicitly requires that it be run with Python3.

[B.Goode]

When I visit https://pypi.python.org/pypi/max7219 the first option given for installation is:

Code: Select all

 sudo pip3 install max7219

Did you try that before getting involved with more complex and confusing options?

(I'm not in front of an RPi right now to check, so perhaps the documentation is not accurate?)

[akaodin]

Yes I had done that. I even tried it again and got the following:

Requirement already satisfied (use --upgrade to upgrade): max7219 in /usr/local/lib/python3.4/dist-packages
Requirement already satisfied (use --upgrade to upgrade): spidev in /usr/local/lib/python3.4/dist-packages (from max7219)
Cleaning up...

and also

~ > pip3 install --upgrade max7219
Requirement already up-to-date: max7219 in /usr/local/lib/python3.4/dist-packages
Requirement already up-to-date: spidev in /usr/local/lib/python3.4/dist-packages (from max7219)
Cleaning up...

I do appreciate your help. Thx very much. Any other suggestions?

[akaodin]

The command I use to try and run the example is:

~/max7219 > python3 examples/matrix_demo.py
Traceback (most recent call last):
File "examples/matrix_demo.py", line 10, in <module>
from luma.led_matrix.device import max7219
ImportError: No module named 'luma.led_matrix'

Am I missing something? This is what I have:

~/max7219/luma/led_matrix > lis
total 32
-rw-r--r-- 1 root root 1941 Apr 2 11:17 segment_mapper.py
-rw-r--r-- 1 root root 242 Apr 2 11:17 __init__.py
-rw-r--r-- 1 root root 18413 Apr 2 11:17 device.py
-rw-r--r-- 1 root root 276 Apr 2 11:17 const.py

I try to run the example from ~/matrix7219. As far as I understand the module does exist, or am I wrong?

[davidcoton]

ImportError: No module named 'luma.led_matrix'

~/max7219/luma/led_matrix > lis

Hope the red highlight is clear.

[akaodin]

I don't understand what the red highlight is. I don't see one other than my user name. Pls explain. Thx.

[akaodin]

Maybe you mean the '/' between luma and led_matrix. If so, then I do not understand. Again, pl explain. Thx.

[davidcoton]

Sorry, no, it's not what I thought. But the error is telling you that the module luma is missing, or not found, or doesn't contain led_matrix.
If that doesnt help, please follow B.Goode's advice and edit your posts to use Code tags, so we can see the proper indentation of your code.

def read_file(fname, encoding='utf-8'):
with open(fname, encoding=encoding) as r:
return r.read()

will appear as

Code: Select all

def read_file(fname, encoding='utf-8'):
	with open(fname, encoding=encoding) as r:
		return r.read()

[akaodin]

Sorry, I'm not sure what Code tags mean or how to use them. I will Google it tomorrow. Thx.

[robbes]

This thread started with

"error in luma.led_matrix setup command: 'tests_require' must be a string or list of strings containing valid project/version requirement specifiers"

Your (unformatted) code contains

Code: Select all

test_deps = [
'mock;python_version<"3.3"',
'pytest>=3.1',
'pytest-cov'
]

and

Code: Select all

tests_require=test_deps,

But you also state you have the latest version of python installed. Is that python3.6? If so, possibly it is conflicting with the python_version<"3.3" requirement
Could you try

Code: Select all

test_deps=[
'mock',
'python_version>"3.3"',
'pytest>=3.1',
'pytest-cov'
]

It is not clear to me why this code is even present. (What do mock and pytest have to do with driving LEDs?)

[DougieLawson]

Sorry, I'm not sure what Code tags mean or how to use them. I will Google it tomorrow. Thx.

If you have a piece of Python code it has left-hand white space (which is critical to syntax). So in the forum you mark it up as
[code]
if code-tags == "USED":
print ("Formatting is preserved")
else:
print ("Formatting is lost and the code is unreadable")
[/code]

And that is formatted by the forum software as

Code: Select all

if code-tags == "USED":
  print ("Formatting is preserved")
else:
  print ("Formatting is lost and the code is unreadable")

[akaodin]

Finally got it. Seems that the install pkgs did create the luma/led_matrix however never placed it in the correct path:
/usr/local/lib/python3.4/dist-packages/luma.core-1.7.2-py3.4.egg
Maybe something i different on my system. I am not sure. But that was the problem. When I cp'ed it all was ok.

[akaodin]

Forgot to thank you all for all your help. Actually you kept me going and helped me greatly. Actually, couldn't have fixed it w/o your help. Thx again.