Hi all,

I've been trying for a few weeks now (on-off) to get Daniel Macias's METAR 
extension working on my WeeWX setup but not having any success.  I'm 
running WeeWX v4.2.0 on an RPi0W with RaspIOS Buster.  I did a full system 
install so WeeWx configs and skins are in /etc/weewx.

Dec 17 20:31:24 server systemd[1]: Starting LSB: weewx weather system...
Dec 17 20:31:26 server weewx[15115] INFO __main__: Initializing weewx 
version 4.2.0
Dec 17 20:31:26 server weewx[15115] INFO __main__: Using Python 3.7.3 
(default, Jul 25 2020, 13:03:44) #012[GCC 8.3.0]
Dec 17 20:31:26 server weewx[15115] INFO __main__: Platform 
Linux-5.4.79+-armv6l-with-debian-10.7
Dec 17 20:31:26 server weewx[15115] INFO __main__: Locale is 'en_US.UTF-8'
Dec 17 20:31:26 server weewx[15115] INFO __main__: PID file is 
/var/run/weewx.pid
Dec 17 20:31:27 server weewx[15104]: Starting weewx weather system: weewx.

Following the directions on his web page 
(https://domoticproject.com/including-metar-reports-weewx/) I have done the 
following:

Downloaded and installed the metargenerator.py file to 
/usr/share/weewx/user.  I added a line to log (in syslog) when a metar is 
successfully retrieved from the web site.  Failures are already being 
logged.


Next I modified /etc/weewx/skins/Seasons/skin.conf in two places.  The 
first modification extends the CheetahGenerator search_list

# The CheetahGenerator creates files from templates.  This section
# specifies which files will be generated from which template.

[CheetahGenerator]

    # Possible encodings are 'html_entities', 'utf8', or 'strict_ascii'
    encoding = html_entitiese
    *search_list_extensions = user.metargenerator.MyMetarSearch*

At the end the file I added this (I also copied this to the end of the 
weewx.conf file).






*# The list of airports to include in the METAR 
report:[MetarReport]refresh_interval = 5    [[kdmw]]    [[kosh]]*    


Finally, I added the following lines to 
/etc/weewx/skins/Seasons/index.html.tmpl to display results in the report:

'''
      <div id="metar_group" class="widget">
        <div class="widget_title">
          METAR (Meteorological Aerodrome Report)
        </div>
        <div class="widget_contents">
        <table>
          <tbody>
            <tr>
               <td class="label">KDMW - Carroll County Regional Airport</td>
               <td class="data">$kdmw_metar</td>
             </tr>
             <tr> 
               <td class="label">KOSH - Wittman Regional Airport</td>
               <td class="data">$kosh_metar</td>
            </tr>
          </tbody>
        </table>
        </div>
    </div>
'''


After I restart and wait for the first report to be generated I get this in 
my syslog.  There is no indication that the search_list_extension 
user.metargenerator.MyMetarSearch was ever run and no METAR data is found 
in the report, just the tags for the individual airports ($kdmw_metar and 
$kosh_metar).

Dec 17 20:17:51 server weewx[14851] INFO weewx.engine: Using binding 
'wx_binding' to database 'weewx.sdb'
Dec 17 20:17:51 server weewx[14851] INFO weewx.manager: Starting backfill 
of daily summaries
Dec 17 20:17:51 server weewx[14851] INFO weewx.engine: Starting main packet 
loop.
Dec 17 20:17:51 server weewx[14851] INFO weewx.wxxtypes: Type beaufort has 
been deprecated. Use unit beaufort instead.
Dec 17 20:20:22 server weewx[14851] INFO weewx.manager: Added record 
2020-12-17 20:20:00 EST (1608254400) to database 'weewx.sdb'
Dec 17 20:20:23 server weewx[14851] INFO weewx.manager: Added record 
2020-12-17 20:20:00 EST (1608254400) to daily summary in 'weewx.sdb'
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: MainThread: 
Zambretti: starting thread
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: generating forecast for 2020-12-17 09:00:00 EST (1608213600)
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: MainThread: NWS: 
not yet time to do the forecast
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: using winddir from 2020-12-17 08:30:00 EST (1608211800) to 
2020-12-17 09:00:00 EST (1608213600)
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: using pressure from 2020-12-17 06:00:00 EST (1608202800) to 
2020-12-17 09:00:00 EST (1608213600)
Dec 17 20:20:23 server weewx[14851] DEBUG weewx.reportengine: Running 
reports for latest time in the database.
Dec 17 20:20:23 server weewx[14851] DEBUG weewx.reportengine: Running 
report 'SeasonsReport'
Dec 17 20:20:23 server weewx[14851] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: units=1 winddir=None pressure=30.07961402744 
first_p=30.04029032258066 last_p=30.111866666666675
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: pressure=1018.6124876429427 month=11 winddir=None 
trend=0.807950946880851 north=True
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: code is B
Dec 17 20:20:23 server weewx[14851] INFO user.forecast: ZambrettiThread: 
Zambretti: generated 1 forecast record
Dec 17 20:20:23 server weewx[14851] DEBUG weewx.reportengine: Found 
configuration file /etc/weewx/skins/Seasons/skin.conf for report 
'SeasonsReport'
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: saving 1 forecast records
Dec 17 20:20:23 server weewx[14851] INFO weewx.manager: Added record 
2020-12-17 20:20:00 EST (1608254400) to database 'forecast.sdb'
Dec 17 20:20:23 server weewx[14851] INFO user.forecast: ZambrettiThread: 
Zambretti: saved 1 forecast records
Dec 17 20:20:23 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: deleting forecasts prior to 1607649623
Dec 17 20:20:24 server weewx[14851] INFO user.forecast: ZambrettiThread: 
Zambretti: deleted forecasts prior to 1607649623
Dec 17 20:20:24 server weewx[14851] DEBUG user.forecast: ZambrettiThread: 
Zambretti: terminating thread
Dec 17 20:20:24 server weewx[14851] INFO weewx.restx: StationRegistry: 
Published record 2020-12-17 20:20:00 EST (1608254400)
*Dec 17 20:20:24 server weewx[14851] DEBUG weewx.cheetahgenerator: Using 
search list ['weewx.cheetahgenerator.Almanac', 
'weewx.cheetahgenerator.Station', 'weewx.cheetahgenerator.Current', 
'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo', 
'weewx.cheetahgenerator.Extras', 'user.forecast.ForecastVariables']*
Dec 17 20:20:24 server weewx[14851] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:20:57 server weewx[14851] INFO weewx.cheetahgenerator: Generated 
8 files for report SeasonsReport in 33.35 seconds
Dec 17 20:20:57 server weewx[14851] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:21:03 server weewx[14851] INFO weewx.imagegenerator: Generated 15 
images for report SeasonsReport in 5.86 seconds
Dec 17 20:21:04 server weewx[14851] INFO weewx.reportengine: Copied 88 
files to /var/www/html/weewx
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.reportengine: Report 
'SmartphoneReport' not enabled. Skipping.
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.reportengine: Report 
'MobileReport' not enabled. Skipping.
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.reportengine: Report 
'StandardReport' not enabled. Skipping.
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.reportengine: Running 
report 'Inigo'
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.reportengine: Found 
configuration file /etc/weewx/skins/Inigo/skin.conf for report 'Inigo'
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.cheetahgenerator: Using 
search list ['weewx.cheetahgenerator.Almanac', 
'weewx.cheetahgenerator.Station', 'weewx.cheetahgenerator.Current', 
'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo', 
'weewx.cheetahgenerator.Extras', 'user.alltime.ExtendedStatistics', 
'user.inigo-since.Since']
Dec 17 20:21:04 server weewx[14851] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:21:08 server weewx[14851] INFO weewx.cheetahgenerator: Generated 
1 files for report Inigo in 4.67 seconds
Dec 17 20:21:08 server weewx[14851] DEBUG weewx.reportengine: Report 
'forecast' not enabled. Skipping.
Dec 17 20:21:08 server weewx[14851] DEBUG weewx.reportengine: Report 'FTP' 
not enabled. Skipping.
Dec 17 20:21:08 server weewx[14851] DEBUG weewx.reportengine: Report 
'RSYNC' not enabled. Skipping.




Now I know from his instructions that the search_list_extensions need to be 
put into the skin.conf file in order for the metar tags to be found but no 
matter what I do, I don't see any indication the extension ever runs.  So, 
I tried extending the search list in the CheetahGenerator section in 
weewx.conf (just on a whim).  After restarting weewx, this is what I see in 
the syslog.

Dec 17 20:35:21 server weewx[15119] INFO weewx.manager: Added record 
2020-12-17 20:35:00 EST (1608255300) to database 'weewx.sdb'
Dec 17 20:35:21 server weewx[15119] INFO weewx.manager: Added record 
2020-12-17 20:35:00 EST (1608255300) to daily summary in 'weewx.sdb'
Dec 17 20:35:22 server weewx[15119] DEBUG user.forecast: MainThread: 
Zambretti: not yet time to do the forecast
Dec 17 20:35:22 server weewx[15119] DEBUG user.forecast: MainThread: NWS: 
not yet time to do the forecast
Dec 17 20:35:22 server weewx[15119] DEBUG weewx.reportengine: Running 
reports for latest time in the database.
Dec 17 20:35:22 server weewx[15119] DEBUG weewx.reportengine: Running 
report 'SeasonsReport'
Dec 17 20:35:22 server weewx[15119] DEBUG weewx.reportengine: Found 
configuration file /etc/weewx/skins/Seasons/skin.conf for report 
'SeasonsReport'
*Dec 17 20:35:22 server weewx[15119] DEBUG weewx.cheetahgenerator: Using 
search list ['weewx.cheetahgenerator.Almanac', 
'weewx.cheetahgenerator.Station', 'weewx.cheetahgenerator.Current', 
'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo', 
'weewx.cheetahgenerator.Extras', 'user.forecast.ForecastVariables', 
'user.metargenerator.MyMetarSearch']*
Dec 17 20:35:22 server weewx[15119] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:35:23 server weewx[15119] INFO weewx.restx: StationRegistry: 
Published record 2020-12-17 20:35:00 EST (1608255300)




*Dec 17 20:35:23 server /weewxd: kdmw: error: Cannot get Metar Report. 
Recovering the last file saved.Dec 17 20:35:23 server /weewxd: 
metargenerator.py: error: There could not be found an older Metar Report. 
Skipping!Dec 17 20:35:23 server /weewxd: kosh: error: Cannot get Metar 
Report. Recovering the last file saved.Dec 17 20:35:23 server /weewxd: 
metargenerator.py: error: There could not be found an older Metar Report. 
Skipping!Dec 17 20:35:23 server /weewxd: metargenerator.py: Generated 0 
metar tables in 0.02 seconds*
Dec 17 20:35:56 server weewx[15119] INFO weewx.cheetahgenerator: Generated 
8 files for report SeasonsReport in 33.78 seconds
Dec 17 20:35:56 server weewx[15119] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:36:02 server weewx[15119] INFO weewx.imagegenerator: Generated 15 
images for report SeasonsReport in 5.38 seconds
Dec 17 20:36:02 server weewx[15119] INFO weewx.reportengine: Copied 88 
files to /var/www/html/weewx
Dec 17 20:36:02 server weewx[15119] DEBUG weewx.reportengine: Report 
'SmartphoneReport' not enabled. Skipping.
Dec 17 20:36:02 server weewx[15119] DEBUG weewx.reportengine: Report 
'MobileReport' not enabled. Skipping.
Dec 17 20:36:02 server weewx[15119] DEBUG weewx.reportengine: Report 
'StandardReport' not enabled. Skipping.
Dec 17 20:36:02 server weewx[15119] DEBUG weewx.reportengine: Running 
report 'Inigo'
Dec 17 20:36:02 server weewx[15119] DEBUG weewx.reportengine: Found 
configuration file /etc/weewx/skins/Inigo/skin.conf for report 'Inigo'
Dec 17 20:36:03 server weewx[15119] DEBUG weewx.cheetahgenerator: Using 
search list ['weewx.cheetahgenerator.Almanac', 
'weewx.cheetahgenerator.Station', 'weewx.cheetahgenerator.Current', 
'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo', 
'weewx.cheetahgenerator.Extras', 'user.alltime.ExtendedStatistics', 
'user.inigo-since.Since']
Dec 17 20:36:03 server weewx[15119] DEBUG weewx.manager: Daily summary 
version is 2
Dec 17 20:36:07 server weewx[15119] INFO weewx.cheetahgenerator: Generated 
1 files for report Inigo in 4.60 seconds
Dec 17 20:36:07 server weewx[15119] DEBUG weewx.reportengine: Report 
'forecast' not enabled. Skipping.
Dec 17 20:36:07 server weewx[15119] DEBUG weewx.reportengine: Report 'FTP' 
not enabled. Skipping.
Dec 17 20:36:07 server weewx[15119] DEBUG weewx.reportengine: Report 
'RSYNC' not enabled. Skipping.

Interesting enough, I now see that the extension is being called even if 
all it does is report it can't get the METAR and can't find any backup 
files.  Since it has never created the METAR backup in the first place, I 
accept these results.

I wasn't sure if this was a Python version issue until I confirmed the 
extension runs when added to the search list in weewx.conf.  I guess this 
could still be a problem but I'm not python savvy enough to see how.

I'm at a loss to understand why the metar extension does not run when it is 
configured in the Seasons/skin.conf file?   Can someone enlighten me please?

Mike - AJ9x

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