--- a/src/window.c
+++ b/src/window.c
@@ -3510,6 +3510,15 @@ free_tabpage(tp)
     hash_init(&tp->tp_vars->dv_hashtab);
     unref_var_dict(tp->tp_vars);
 #endif
+
+#ifdef FEAT_PYTHON
+    python_tabpage_free(tp);
+#endif
+
+#ifdef FEAT_PYTHON3
+    python3_tabpage_free(tp);
+#endif
+
     vim_free(tp);
 }
 
@@ -6734,12 +6743,12 @@ get_match(wp, id)
 
 #if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3) || defined(PROTO)
     int
-get_win_number(win_T *wp)
+get_win_number(win_T *wp, win_T *first_win)
 {
     int		i = 1;
     win_T	*w;
 
-    for (w = firstwin; w != NULL && w != wp; w = W_NEXT(w))
+    for (w = first_win; w != NULL && w != wp; w = W_NEXT(w))
 	++i;
 
     if (w == NULL)
@@ -6747,4 +6756,19 @@ get_win_number(win_T *wp)
     else
 	return i;
 }
-#endif
+
+    int
+get_tab_number(tabpage_T *tp)
+{
+    int		i = 1;
+    tabpage_T	*t;
+
+    for (t = first_tabpage; t != NULL && t != tp; t = t->tp_next)
+	++i;
+
+    if (t == NULL)
+	return 0;
+    else
+	return i;
+}
+#endif