Is there a replacement for python-appindicator?

I think python-appindicator package is deprecated and GObject bindings are recommended. There are GObject bindings for appindicators and they should be used AFAIK.

There are two packages in ubuntu for python bindings for appindicator. One is based on libappindicator and another is based on libayatana-appindicator I donot know the core difference between the two but my guess is ayatana-appindicator is latest ones for clarity of names and are also available in other distros.

The package names are:

• gir1.2-appindicator
• gir1.2-appindicator3.
• gir1.2-ayatanaappindicator
• gir1.2-ayatanaappindicator3.

The 3 suffix one are for gtk3 and can be used for gtk3 related apps.

Here is my own use case which shows my native calendar in panel. Shown below is usage in gnome-shell with kappindicator extension along with dropbox.

Basically, for documentation see https://lazka.github.io/pgi-docs/AyatanaAppIndicator3-0.1/index.html

P.S. The image is from fedora as I am currently in fedora desktop with gnome-shell 3.38. I think ubuntu ships with https://packages.ubuntu.com/focal/gnome-shell-extension-appindicator which can be used to show status tray and appindicators for already existing ones. I currently use it for zoom, dropbox etc