diff --git a/tools/dbus_exporter.py b/tools/dbus_exporter.py
index 4da8b82af48..f94f261e079 100755
--- a/tools/dbus_exporter.py
+++ b/tools/dbus_exporter.py
@@ -4,58 +4,39 @@ from argparse import ArgumentParser
 from pathlib import Path
 from subprocess import run, PIPE
 
-
 def extract_interfaces_xml(output_dir, executable):
-    list_interfaces_process = run(
+    proc = run(
         args=[executable.absolute(), '--bus-introspect', 'list'],
         stdout=PIPE,
         check=True,
-        universal_newlines=True,
-    )
+        universal_newlines=True)
 
-    interfaces_lines = list_interfaces_process.stdout.splitlines()
-
-    interface_names = [x.split()[1] for x in interfaces_lines]
+    interface_names = (x.split()[1] for x in proc.stdout.splitlines())
 
     for interface_name in interface_names:
-        interface_introspection_run = run(
+        proc = run(
             args=[executable.absolute(), '--bus-introspect', interface_name],
             stdout=PIPE,
             check=True,
-            universal_newlines=True,
-        )
+            universal_newlines=True)
 
         interface_file_name = output_dir / (interface_name + '.xml')
-        with open(interface_file_name, mode='w') as f:
-            f.write(interface_introspection_run.stdout)
+        interface_file_name.write_text(proc.stdout)
         interface_file_name.chmod(0o644)
 
-
-def iterate_executables(output_dir, executables):
-    output_dir.mkdir(mode=0o755, exist_ok=True)
-
-    for exe in executables:
-        extract_interfaces_xml(output_dir, exe)
-
-
 def main():
     parser = ArgumentParser()
-
-    parser.add_argument(
-        'output',
-        type=Path,
-    )
-
-    parser.add_argument(
-        'executables',
-        type=Path,
-        nargs='+',
-    )
+    parser.add_argument('output',
+                        type=Path)
+    parser.add_argument('executables',
+                        nargs='+',
+                        type=Path)
 
     args = parser.parse_args()
 
-    iterate_executables(args.output, args.executables)
-
+    args.output.mkdir(exist_ok=True)
+    for exe in args.executables:
+        extract_interfaces_xml(args.output, exe)
 
 if __name__ == '__main__':
     main()