[cleanup] Consistent style for file heads

devscripts/make_supportedsites.py

@@ -1,10 +1,14 @@
 #!/usr/bin/env python3
-import optparse
+
+# Allow direct execution
 import os
 import sys
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
+
+import optparse
+
 from yt_dlp.extractor import list_extractor_classes