chore: fix python lint warnings (#14638)

* chore: fix lint warnings

* chore: another try at python import errors

Looks like the problem is that dbus_mock.py is running as
a script but living in the `lib/` directory where it's part of a
module. Moving it up into the `script/` directory seems to
solve the issue.

script/check-relative-doc-links.py

@@ -57,29 +57,28 @@ def getBrokenLinks(filepath):
 
   for link in links:
     sections = link.split('#')
-    if len(sections) > 1:
-      if str(link).startswith('#'):
-        if not checkSections(sections, lines):
-          brokenLinks.append(link)
-      else:
-        tempFile = os.path.join(currentDir, sections[0])
-        if os.path.isfile(tempFile):
-          try:
-            newFile = open(tempFile, 'r')
-            newLines = newFile.readlines()
-          except KeyboardInterrupt:
-            print('Keyboard interruption whle parsing. Please try again.')
-          finally:
-            newFile.close()
-
-          if not checkSections(sections, newLines):
-            brokenLinks.append(link)
-        else:
-          brokenLinks.append(link)
-
-    else:
+    if len(sections) < 2:
       if not os.path.isfile(os.path.join(currentDir, link)):
         brokenLinks.append(link)
+    elif str(link).startswith('#'):
+      if not checkSections(sections, lines):
+        brokenLinks.append(link)
+    else:
+      tempFile = os.path.join(currentDir, sections[0])
+      if os.path.isfile(tempFile):
+        try:
+          newFile = open(tempFile, 'r')
+          newLines = newFile.readlines()
+        except KeyboardInterrupt:
+          print('Keyboard interruption whle parsing. Please try again.')
+        finally:
+          newFile.close()
+
+        if not checkSections(sections, newLines):
+          brokenLinks.append(link)
+      else:
+        brokenLinks.append(link)
+
 
   print_errors(filepath, brokenLinks)
   return len(brokenLinks)