SyntaxWarning: "is" with a literal

[Aiko Barz]

Starting khal (Ubuntu 20.04) gives me an error:

$ khal
/usr/lib/python3/dist-packages/khal/settings/utils.py:136: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if color is None or color is '':
…

Line 136 looks like this:
  if color is None or color is '':

In upstream¹ this line looks like that:
  if color is None or color == '':

I patched my utils.py manually, now the error is gone.

Kind regards
Aiko

¹: https://github.com/pimutils/khal/blob/master/khal/settings/utils.py#L156

[Hans Joachim Desserud (hjd)]

Thanks for taking your time to report this issue and help making Ubuntu better. Marking this confirmed based on the corresponding Debian bug report.