I forgot to say that solar.py is in weewx.conf engine section
[Engine]
# The following section specifies which services should be run and in
what order.
[[Services]]
prep_services = weewx.engine.StdTimeSynch,
data_services = user.solar.AddSolar,
process_services = weewx.engine.StdConvert,
weewx.engine.StdCalibrate, weewx.engine.StdQC,
weewx.wxservices.StdWXCalculate
xtype_services = weewx.wxxtypes.StdWXXTypes,
weewx.wxxtypes.StdPressureCooker, weewx.wxxtypes.StdRainRater,
weewx.wxxtypes.StdDelta
# archive_services = weewx.engine.StdArchive,
user.forecast.ZambrettiForecast, user.forecast.WUForecast,
user.forecast.NWSForecast, user.forecast.XTideForecast,
user.forecast.OWMFor$
archive_services = weewx.engine.StdArchive
restful_services = weewx.restx.StdWunderground, weewx.restx.StdWOW,
weewx.restx.StdPWSweather, weewx.restx.StdCWOP,
weewx.restx.StdStationRegistry, user.owm.OpenWeatherMap
report_services = weewx.engine.StdPrint, weewx.engine.StdReport,
user.alarm.MyAlarm, user.badData.MyBadData
*solar.py*
import syslog
import weewx
from weewx.engine import StdService
import weewx.units
weewx.units.obs_group_dict['solar'] = 'group_energy'
"""
weewx.units.obs_group_dict['solar'] = 'group_solar'
weewx.units.USUnits['group_solar'] = 'kilowatt_hour'
weewx.units.MetricUnits['group_solar'] = 'kilowatt_hour'
weewx.units.MetricWXUnits['group_solar'] = 'kilowatt_hour'
weewx.units.default_unit_format_dict['kilowatt_hour'] = '%.1f'
weewx.units.default_unit_label_dict['kilowatt_hour'] = ' kw/h'
"""
class AddSolar(StdService):
def __init__(self, engine, config_dict):
# Initialize my superclass first:
super(AddSolar, self).__init__(engine, config_dict)
On Monday, October 21, 2024 at 2:42:19 PM UTC+1
mike.t...@noworries.plus.com wrote:
> Hi All,
> I'm adding kw/h data from my solar panels to a daily summary table. I've
> followed the electrical example in the weewx docs and
>
> - added a new database column, solar
> - created a solar.py which doesn't do anything other than define the
> new unit group and add solar to it
>
> from weewx.engine import StdService
> import weewx.units
> weewx.units.obs_group_dict['solar'] = 'group_solar'
> weewx.units.USUnits['group_solar'] = 'kilowatt_hour'
> weewx.units.MetricUnits['group_solar'] = 'kilowatt_hour'
> weewx.units.MetricWXUnits['group_solar'] = 'kilowatt_hour'
> weewx.units.default_unit_format_dict['kilowatt_hour'] = '%.1f'
> weewx.units.default_unit_label_dict['kilowatt_hour'] = ' kw/h'
>
> Image Generator creates a bar chart based on the new solar element and
> picks up the default label kw/h
> *skin.conf snippet*
> [[[monthsolar]]]
> yscale = 0, None, 2
> plot_type = bar
> [[[[solar]]]]
> aggregate_type = sum
> aggregate_interval = 86400
> label = Solar (daily total)
>
>
> [image: monthsolar_using_solar_column.png]
> However when historygenerator.py runs it errors out with "obs_type solar
> no unit found".
> This is not true as Image generator has worked correctly and also I have
> written the weewx.units.obs_group_dict dictionary to syslog so that I could
> see the contents and solar is present in the list.
> *syslog snippet*
>
> Oct 21 13:55:20 weepi weewxd[32025]: INFO weewx.imagegenerator: Generated
> 24 images for report SeasonsReport in 1.77 seconds
> Oct 21 13:55:20 weepi weewxd[32025]: INFO weewx.reportengine: Copied 0
> files to /home/weewx/public_html
> Oct 21 13:55:20 weepi weewxd[32025]: INFO weewx.cheetahgenerator:
> Generated 6 files for report SmartphoneReport in 0.07 seconds
> Oct 21 13:55:20 weepi weewxd[32025]: INFO weewx.imagegenerator: Generated
> 6 images for report SmartphoneReport in 0.23 seconds
> Oct 21 13:55:20 weepi weewxd[32025]: INFO weewx.reportengine: Copied 0
> files to /home/weewx/public_html/smartphone
> Oct 21 13:55:20 weepi weewxd[32025]: INFO weewx.cheetahgenerator:
> Generated 3 files for report exfoliation in 0.37 seconds
> Oct 21 13:55:21 weepi weewxd[32025]: INFO weewx.imagegenerator: Generated
> 15 images for report exfoliation in 0.69 seconds
> Oct 21 13:55:21 weepi weewxd[32025]: INFO weewx.reportengine: Copied 0
> files to /home/weewx/public_html/exfoliation
> Oct 21 14:00:01 weepi CRON[1553]: (pi) CMD (/home/pi/testwifi.sh)
> Oct 21 14:00:04 weepi /home/pi/testwifi.sh: WiFi seems up.
> Oct 21 14:00:24 weepi weewxd[32025]: INFO weewx.manager: Added record
> 2024-10-21 14:00:00 BST (1729515600) to database 'weewx.sdb'
> Oct 21 14:00:24 weepi weewxd[32025]: INFO weewx.manager: Added record
> 2024-10-21 14:00:00 BST (1729515600) to daily summary in 'weewx.sdb'
> Oct 21 14:00:24 weepi weewxd[32025]: INFO weewx.restx: OWM: Published
> record 2024-10-21 14:00:00 BST (1729515600)
> Oct 21 14:00:24 weepi weewxd[32025]: INFO weewx.restx: Wunderground-PWS:
> Published record 2024-10-21 14:00:00 BST (1729515600)
> Oct 21 14:00:25 weepi /weewxd.py: historygenerator.py: obs_type solar no
> unit found
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine: Caught
> unrecoverable exception in generator
> 'weewx.cheetahgenerator.CheetahGenerator'
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** local variable 'unit_type' referenced before assignment
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** Traceback (most recent call last):
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/reportengine.py",
> line 248, in run
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** obj.start()
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/reportengine.py",
> line 465, in start
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** self.run()
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/cheetahgenerator.py",
> line 166, in run
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** ngen = self.generate(gen_dict[section_name], section_name,
> self.gen_ts)
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/cheetahgenerator.py",
> line 226, in generate
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** ngen += self.generate(section[subsection], subsection, gen_ts)
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/cheetahgenerator.py",
> line 226, in generate
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** ngen += self.generate(section[subsection], subsection, gen_ts)
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/cheetahgenerator.py",
> line 313, in generate
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** _filename))
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File
> "/home/pi/weewx-venv/lib/python3.7/site-packages/weewx/cheetahgenerator.py",
> line 401, in _getSearchList
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** search_list += obj.get_extension_list(timespan, db_lookup)
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File "/home/weewx/bin/user/historygenerator.py", line 178, in
> get_extension_list
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** self.search_list_extension[table_name] =
> self._statsHTMLTable(table_options, table_stats, table_name, binding,
> NOAA=noaa)
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** File "/home/weewx/bin/user/historygenerator.py", line 277, in
> _statsHTMLTable
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** if unit_type == 'count':
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** UnboundLocalError: local variable 'unit_type' referenced before
> assignment
> Oct 21 14:00:25 weepi weewxd[32025]: ERROR weewx.reportengine:
> **** Generator terminated
> Oct 21 14:00:28 weepi weewxd[32025]: INFO weewx.imagegenerator: Generated
> 38 images for report SeasonsReport in 3.82 seconds
> Oct 21 14:00:28 weepi weewxd[32025]: INFO weewx.reportengine: Copied 0
> files to /home/weewx/public_html
> Oct 21 14:00:28 weepi weewxd[32025]: INFO weewx.cheetahgenerator:
> Generated 6 files for report SmartphoneReport in 0.07 seconds
> Oct 21 14:00:29 weepi weewxd[32025]: INFO weewx.imagegenerator: Generated
> 12 images for report SmartphoneReport in 1.01 seconds
>
> My python is rudimentary but it looks like the try has failed
> try:
> unit_type =
> reading.converter.group_unit_dict[reading.value_t[2]]
> except KeyError:
> syslog.syslog(syslog.LOG_INFO, "%s: obs_type %s no unit
> found" % (os.path.basename(__file__),
>
> obs_type))
>
> If I assign solar to group_energy;
> weewx.units.obs_group_dict['solar'] = 'group_energy'
>
> historygenerator runs without error.
>
> I hacked the historygenerator and printed the contents of
> reading.converter.group_unit_dict to syslog and solar wasn't in the list.
>
> Hence my conclusion is that either I have not correctly defined the new
> unit and /or unit group or historygenerator is not picking up new units.
>
> I have a work around, however as my python is not good I'd like to
> understand what's going on.
>
> Any insight welcome, thanks
>
> BTW My setup is RPi4 and weewx5.1 with the AllTimeSeasons
> <https://github.com/glennmckechnie/alltimeSeasons> skin extension
>
>
>
>
>
>
>
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