Define appname and app_id only once

satellite/application.py

@@ -33,6 +33,8 @@ gi.require_version('Gdk', '3.0')
 gi.require_version('Handy', '1')
 from gi.repository import Gdk, Gio, GLib, Gtk, Handy  # noqa: E402
 
+appname = 'Satellite'
+app_id = 'page.codeberg.tpikonen.satellite'
 
 def is_on_mobile_screen(widget):
     """Return True if widget is on a small screen."""
@@ -52,7 +54,7 @@ class SatelliteApp(Gtk.Application):
 
     def __init__(self, *args, **kwargs):
         Gtk.Application.__init__(
-            self, *args, application_id="page.codeberg.tpikonen.satellite",
+            self, *args, application_id=app_id,
             flags=Gio.ApplicationFlags.FLAGS_NONE, **kwargs)
         Handy.init()
 
@@ -191,10 +193,9 @@ class SatelliteApp(Gtk.Application):
         print("...done.")
 
     def init_source(self):
+        self.log_msg(f"{appname} version {__version__} started")
         source_init = False
 
-        self.log_msg(f"Satellite version {__version__} started")
-
         self.log_msg(f'Trying to initialize source "{self.args.source}"')
 
         if self.args.source == 'quectel':
@@ -308,8 +309,8 @@ class SatelliteApp(Gtk.Application):
         adlg = Gtk.AboutDialog(
             transient_for=self.window,
             modal=True,
-            program_name="Satellite",
-            logo_icon_name="page.codeberg.tpikonen.satellite",
+            program_name=appname,
+            logo_icon_name=app_id,
             version=__version__,
             comments="A program for showing navigation satellite data",
             license_type=Gtk.License.GPL_3_0_ONLY,