diff --git a/common/utils.py b/common/utils.py
index d7f3fab..40a114c 100644
--- a/common/utils.py
+++ b/common/utils.py
@@ -82,6 +82,10 @@ def open_file_browser(directory):
             # xdg-open *should* be supported by recent Gnome, KDE, Xfce
 
 
+def LINE():
+    return sys._getframe(1).f_lineno
+
+
 def printerr(*args, **kwargs):
     print(*args, file=sys.stderr, **kwargs)