Various string cleanups (#30435)

* Remove some unnecessary string concatenations

* Replace some simple str.formats with f-strings

* Replace some string concatenations with f-strings

homeassistant/scripts/__init__.py

@@ -38,7 +38,7 @@ def run(args: List) -> int:
         print("Available scripts:", ", ".join(scripts))
         return 1
 
-    script = importlib.import_module("homeassistant.scripts." + args[0])
+    script = importlib.import_module(f"homeassistant.scripts.{args[0]}")
 
     config_dir = extract_config_dir()
 

homeassistant/scripts/check_config.py

@@ -43,7 +43,7 @@ def color(the_color, *args, reset=None):
             return parse_colors(the_color)
         return parse_colors(the_color) + " ".join(args) + escape_codes[reset or "reset"]
     except KeyError as k:
-        raise ValueError("Invalid color {} in {}".format(str(k), the_color))
+        raise ValueError(f"Invalid color {k!s} in {the_color}")
 
 
 def run(script_args: List) -> int:

homeassistant/scripts/macos/__init__.py

@@ -27,10 +27,10 @@ def install_osx():
         with open(path, "w", encoding="utf-8") as outp:
             outp.write(plist)
     except OSError as err:
-        print("Unable to write to " + path, err)
+        print(f"Unable to write to {path}", err)
         return
 
-    os.popen("launchctl load -w -F " + path)
+    os.popen(f"launchctl load -w -F {path}")
 
     print(
         "Home Assistant has been installed. \
@@ -41,7 +41,7 @@ def install_osx():
 def uninstall_osx():
     """Unload from launchd on OS X."""
     path = os.path.expanduser("~/Library/LaunchAgents/org.homeassistant.plist")
-    os.popen("launchctl unload " + path)
+    os.popen(f"launchctl unload {path}")
 
     print("Home Assistant has been uninstalled.")