Locales which use decimal commas instead of dots break output parsing

[ByteCommander]

My locale specifies German number formatting i.e. two and a half will be "2,5" instead of "2.5".

This breaks the part of your script which is responsible for parsing the output of upower because it expects only digits and a dot in floating point number literals.

You could either prefix the upower command with LANG=C to run it with a default English locale or translate commas into dots in the output string before parsing it.

Here's the exact traceback:

$ powerflow-indicator 
/usr/local/bin/powerflow-indicator:39: PyGIWarning: AppIndicator3 was imported without specifying a version first. Use gi.require_version('AppIndicator3', '0.1') before import to ensure that the right version gets loaded.
  from gi.repository import AppIndicator3 as appindicator
Traceback (most recent call last):
  File "/usr/local/bin/powerflow-indicator", line 172, in <module>
    main()
  File "/usr/local/bin/powerflow-indicator", line 168, in main
    indicator = LockKeyStatusIndicator(args.amps)
  File "/usr/local/bin/powerflow-indicator", line 59, in __init__
    self.update_label()
  File "/usr/local/bin/powerflow-indicator", line 153, in update_label
    label_text = self.get_power_info()[0]
  File "/usr/local/bin/powerflow-indicator", line 138, in get_power_info
    1000 * float(energy_rate[:-1]) / float(voltage[:-1]), 4)
ValueError: invalid literal for float(): 17,305

[SergKolo]

@ByteCommander pushed a fix. I'm overriding everything with LC_ALL variable. Tested on Chinese locale, seems to work. Let me know if it works for you

[ByteCommander]

The locale issue seems fixed, no more errors here.