New Weewx/W34 install works OK, but with error msgs

[Bill Arthur]

I just reinstalled Weewx and Weather34. It's working OK, but I get the following error messages. Any idea where the problem lies?

Mar 18 13:50:27 OpiQ-2 weewx[498]: cheetahgenerator: Generate failed with exception '<type 'exceptions.TypeError'>'

Mar 18 13:50:27 OpiQ-2 weewx[498]: cheetahgenerator: **** Ignoring template /etc/weewx/skins/Weather34/w34charts/chartdata/result.csv.tmpl

Mar 18 13:50:27 OpiQ-2 weewx[498]: cheetahgenerator: **** Reason: unsupported operand type(s) for +: 'float' and 'NoneType'

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****  Traceback (most recent call last):

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****    File "/usr/share/weewx/weewx/cheetahgenerator.py", line 332, in generate

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****      fd.write(str(compiled_template))

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****    File "/usr/lib/python2.7/dist-packages/Cheetah/Template.py", line 1045, in __str__

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****      rc = getattr(self, mainMethName)()

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****    File "_etc_weewx_skins_Weather34_w34charts_chartdata_result_csv_tmpl.py", line 251, in respond

Mar 18 13:50:27 OpiQ-2 weewx[498]: ****  TypeError: unsupported operand type(s) for +: 'float' and 'NoneType'

Mar 18 13:50:27 OpiQ-2 weewx[498]: cheetahgenerator: Generated 3 files for report Weather34Report in 0.70 seconds

Mar 18 13:50:27 OpiQ-2 weewx[498]: copygenerator: copied 0 files to /var/weewx/reports

[steeple ian]

Which version of WeeWX are you running? 

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[Bill Arthur]

Thanks for the quick response! 

3.9.2   Downloaded and installed last night.

[Thomas Keffer]

This is almost surely a problem in the skin "Weather34Report." Somewhere in the template Weather34/w34charts/chartdata/result.csv.tmpl is some arithmetic, where two numbers are getting added together. One of them is value Python None, rather than a number.

In general, when writing code or templates for weewx, one must be vigilant to the possibility that a value might be None, and test for it.

-tk

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[steeple ian]

Bill,

Thomas is correct. The reason I asked about your WeeWX version is that we are moving away from CanvasJS to Highcharts. We have not completed our testing on WeeWX 4 builds but it is looking good for 3.9.2.

If you can hold fire for a couple of days I can let you have a copy to try. The whole chart infra structure has been changed and will include for the first time charts that you can see updating in real time. There is a new ultra efficient install process included as well.

Ian

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[Bill Arthur]

Thank you both.  I can certainly wait for for a bit.
I'm just happy that it wasn't something stupid I did during install.
And I look forward to helping test the new copy.

On Wednesday, March 18, 2020 at 1:56:56 PM UTC-5, Bill Arthur wrote: