AttributeError: module 'locale' has no attribute 'format'. Did you mean: '_format'? (Python 3.12)

[djenk41us]

Please don't delete these questions! They are asked almost with every issue - answering them as below saves us time from asking them!

First step
Try to debug the skin yourself. If you can't figure it out, please include the debug information (text, screenshots, etc.). See this guide on debugging the skin. https://github.com/poblabs/weewx-belchertown#how-to-use-debug

Describe the bug
2024-09-07T11:10:17.592973-04:00 wxlargo weewxd[4387]: ERROR weewx.reportengine: **** Generator terminated
2024-09-07T11:10:17.596633-04:00 wxlargo weewxd[4387]: Traceback (most recent call last):
2024-09-07T11:10:17.599758-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/reportengine.py", line 248, in run
2024-09-07T11:10:17.602649-04:00 wxlargo weewxd[4387]: obj.start()
2024-09-07T11:10:17.604716-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/reportengine.py", line 465, in start
2024-09-07T11:10:17.609694-04:00 wxlargo weewxd[4387]: self.run()
2024-09-07T11:10:17.610900-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/cheetahgenerator.py", line 166, in run
2024-09-07T11:10:17.613712-04:00 wxlargo weewxd[4387]: ngen = self.generate(gen_dict[section_name], section_name, self.gen_ts)
2024-09-07T11:10:17.618092-04:00 wxlargo weewxd[4387]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-09-07T11:10:17.621753-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/cheetahgenerator.py", line 226, in generate
2024-09-07T11:10:17.627022-04:00 wxlargo weewxd[4387]: ngen += self.generate(section[subsection], subsection, gen_ts)
2024-09-07T11:10:17.631948-04:00 wxlargo weewxd[4387]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-09-07T11:10:17.634672-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/cheetahgenerator.py", line 226, in generate
2024-09-07T11:10:17.639722-04:00 wxlargo weewxd[4387]: ngen += self.generate(section[subsection], subsection, gen_ts)
2024-09-07T11:10:17.643669-04:00 wxlargo weewxd[4387]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-09-07T11:10:17.646663-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/cheetahgenerator.py", line 309, in generate
2024-09-07T11:10:17.650711-04:00 wxlargo weewxd[4387]: searchList = self._getSearchList(encoding, timespan,
2024-09-07T11:10:17.653910-04:00 wxlargo weewxd[4387]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-09-07T11:10:17.657195-04:00 wxlargo weewxd[4387]: File "/usr/share/weewx/weewx/cheetahgenerator.py", line 401, in _getSearchList
2024-09-07T11:10:17.662002-04:00 wxlargo weewxd[4387]: search_list += obj.get_extension_list(timespan, db_lookup)
2024-09-07T11:10:17.666044-04:00 wxlargo weewxd[4387]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2024-09-07T11:10:17.668939-04:00 wxlargo weewxd[4387]: File "/etc/weewx/bin/user/belchertown.py", line 612, in get_extension_list
2024-09-07T11:10:17.672763-04:00 wxlargo weewxd[4387]: locale.format("%g", float(year_outTemp_max_range_total)),
2024-09-07T11:10:17.677784-04:00 wxlargo weewxd[4387]: ^^^^^^^^^^^^^
2024-09-07T11:10:17.679405-04:00 wxlargo weewxd[4387]: AttributeError: module 'locale' has no attribute 'format'. Did you mean: '_format'?
Link to your website (IMPORTANT)
www.largoweather.com

Version of the skin you're using
1.31

To Reproduce
This error generates each time the skin is executed.

Expected behavior
I should see the forecast and the Weather Record snapshot update.

Screenshots
If applicable, add screenshots to help explain your problem.

Device Information (please complete the following information):
Unbuntu 24.04.1
Python version 3.12.1
WeeWx Version 5.1.0

Additional context
I believe in Python 3.12 they change the methods on the locale package. I want to check if you all see the same issue with 3.12 with Belchertown skin

HELP WANTED
If you have a fix for this, please submit a pull request against the development branch!

[areax99]

in python 3.12 format has been removed and replaced with format_string. So all locale.format entries should be replaced with locale.format_string in belchertown.py

[Meeeds]

I have the same issue thanks for the report

[bourquep]

As a temporary workaround, I added this line near the top of the weewx-data/bin/user/belchertown.py file:

locale.format = locale.format_string

[roe-dl]

Some background I found:

• What’s New In Python 3.12
• Remove deprecate locale.format() function python/cpython#94226
• locale.format() input regression python/cpython#54588
• bpo-10379: deprecate locale.format in lieu of locale.format_string python/cpython#259

It seems that locale.format is deprecated since Python 3.7 in 2017.