Reason: '<' not supported between instances of 'AggTypeBinder' and 'int'

[muire...@gmail.com]

I recently moved my Weewx to a Pi3 (from Pi2) and a new sdcard after issues on the old one.

OS is dietpi (Debian 11)

The reinstall went mostly fine but the cheetahgenerator is having problems processing the weekly tmpl page of my site and I'm having difficulty finding the offending line.

The error is :

May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: Evaluation of template /etc/weewx/skins/Sofaskin/week.html.tmpl failed with exception '<class 'TypeError'>'
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: **** Ignoring template /etc/weewx/skins/Sofaskin/week.html.tmpl
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: **** Reason: '<' not supported between instances of 'AggTypeBinder' and 'int'
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: ****  Traceback (most recent call last):
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: ****    File "/usr/share/weewx/weewx/cheetahgenerator.py", line 348, in generate
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: ****      unicode_string = compiled_template.respond()
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: ****    File "cheetah__etc_weewx_skins_Sofaskin_week_html_tmpl_1652707218_3933926_51403.py", line 611, in respond
May 16 14:50:17 WeatherStation python3[347]: weewx[347] ERROR weewx.cheetahgenerator: ****  TypeError: '<' not supported between instances of 'AggTypeBinder' and 'int'

The week.html.tmpl file it references isnt 611 lines long so i dont know where to look.

The (temporary?) py file it references  is somewhere i cannot find -. "cheetah__etc_weewx_skins_Sofaskin_week_html_tmpl_1652707218_3933926_51403.py"

This was working previously on the old install using python 2.

Has anyone any suggestion on how to tackle this?

[Tom Keffer]

These kinds of errors can be very difficult to find, and the Cheetah diagnostics don't help much. They refer to the line of the compiled template, which you don't have access to because it is a temporary file.

It is possible to compile the template separately, then look at the output, but that's usually not worth it.

I suspect that somewhere you have an expression similar to "$day.outTemp < 5", where what you want is "$day.outTemp.raw < 5". I've used "$day" and "outTemp" in this example, but it could be any time period and any observation type. Look through the Sofaskin week.html.tmpl file carefully for such expressions. 

If worse comes to worse, you can also split the file in half, try it, and see if you get the error. Keep splitting the offending half until you narrow it down to a handful of lines.

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[muire...@gmail.com]

Thanks so much Thomas, that was the help I needed. 

I found the offending line just like you described it :

#if $yesterday.windchill.min <10

Changed to :

#if $yesterday.windchill.min.raw <10

All working great :)

Cheers,

Muireadach.