error in python script (for energy meter)

[br0ken]

Hello,

i'm having issues with a script which I found on https://github.com/datenschuft/SMA-EM

It's a script to read out and write away to some file the values of the energy meter which it has been created for.

I tried contacting the creator, but seems he has no clue either, or his instructions were not very complete.

Anyhow, I hope anyone can point me in the right direction regarding the following error:

Error:
/home/SMA-EM $ sudo python3 sma-daemon.py
Traceback (most recent call last):
File "/usr/local/lib/python3.5/configparser.py", line 1136, in _unify_values
sectiondict = self._sections[section]
KeyError: 'SMA-EM'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "sma-daemon.py", line 30, in <module>
smaemserials=parser.get('SMA-EM', 'serials')
File "/usr/local/lib/python3.5/configparser.py", line 779, in get
d = self._unify_values(section, vars)
File "/usr/local/lib/python3.5/configparser.py", line 1139, in _unify_values
raise NoSectionError(section)
configparser.NoSectionError: No section: 'SMA-EM'

I get this error after running this script:

#!/usr/bin/env python3
# coding=utf-8
"""
 ....
"""
import sys, time
from daemon3x import daemon3x
from configparser import SafeConfigParser
import smaem

#read configuration
parser = SafeConfigParser()
parser.read('/etc/smaemd/config')

smaemserials=parser.get('SMA-EM', 'serials')
serials=smaemserials.split(' ')
smavalues=parser.get('SMA-EM', 'values')
values=smavalues.split(' ')
pidfile=parser.get('DAEMON', 'pidfile')

class MyDaemon(daemon3x):
def run(self):
emparts = {}
while True:
emparts=smaem.readem()
for serial in serials:
#print(serial)
#print(emparts['serial'])
if serial==format(emparts['serial']):
#print("match")
for value in values:
file = open("/run/shm/em-"+format(serial)+"-"+format(value), "w")
file.write('%.4f' % emparts[value])
file.close()

if __name__ == "__main__":
daemon = MyDaemon(pidfile)
if len(sys.argv) == 2:
if 'start' == sys.argv[1]:
daemon.start()
elif 'stop' == sys.argv[1]:
daemon.stop()
elif 'restart' == sys.argv[1]:
daemon.restart()
else:
print ("Unknown command")
sys.exit(2)
sys.exit(0)
else:
print ("usage: %s start|stop|restart" % sys.argv[0])
print (pidfile)
sys.exit(2)

and it refers to this config file as well (which I needed to create myself given the instructions)

[SMA-EM]

*serials of sma-ems the daemon should take notice
*seperated by space
serials=1900254500
*measurement values
values=pregard psurplus qsurplus ssurplus

[DAEMON]
pidfile=/run/smaemd.pid

I tried running python v3 and the base version (2.7...) with sudo ofcourse.

The issue i posted on this github, which gave me no info :

https://github.com/datenschuft/SMA-EM/issues/9


Thanks for anyone who wants to help out here.

[buran]

can you upload the actual config file somewhere, e.g. on GitHub repository/Gist? it is either problem with the file or it is on wrong location

[br0ken]

can you upload the actual config file somewhere, e.g. on GitHub repository/Gist?

hmm, thanks for your input

nothing more as what I posted in the openingpost in fact, as based on the instructions the creator gave me, but here you go:

https://gist.github.com/broke23/64a40a89...140b4bea2c

[buran]

is the file name indeed config.py? it is expecting just config

[br0ken]

is the file name indeed config.py? it is expecting just config

ps: config is located in etc/smaemd/

After renaming it I get the following error:

sudo python sma-daemon.py

Error:
Traceback (most recent call last):
  File "sma-daemon.py", line 23, in <module>
    from configparser import SafeConfigParser
ImportError: No module named configparser

sudo python3 sma-daemon.py

Error:
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/configparser.py", line 1136, in _unify_values
    sectiondict = self._sections[section]
KeyError: '[SMA-EM]'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "sma-daemon.py", line 30, in <module>
    smaemserials=parser.get('[SMA-EM]', 'serials')
  File "/usr/local/lib/python3.5/configparser.py", line 779, in get
    d = self._unify_values(section, vars)
  File "/usr/local/lib/python3.5/configparser.py", line 1139, in _unify_values
    raise NoSectionError(section)
configparser.NoSectionError: No section: '[SMA-EM]'

---

[inline]sudo systemctl daemon-reload
sudo systemctl enable smaemd.service
sudo systemctl start smaemd.service[/inline]

didn't change anything by the way

[buran]

Just renaming the file could not affect if configparser is available if it worked before. Also it is not possible to have both errors from your last post simultaneously

[buran]

AAA, I see - the first error comes from python2. There it is ConfigParser. You should run it with python3

[br0ken]

AAA, I see - the first error comes from python2. There it is ConfigParser. You should run it with python3

But I did try both versions. First is indeed v2. Next is v3

Ps. I have never seen it work. Trying to make it work but run into these errors

[br0ken]

apparently the config file was not in UTF-8 ?

i ran following code to fix it and afterwards it worked:

iconv -f UTF-8 your_file -o /dev/null

sudo python3 sma-daemon.py
usage: sma-daemon.py start|stop|restart
/run/smaemd.pid

so now I tried with

 sudo python3 sma-daemon.py start

and it seems to be working now!

can I ask how come that simple copy-paste ruins the utf-8 ? I guess it's default on my raspberry pi, though copy pasting took wrong coding then ?

[br0ken]

This thread can be closed if you want.