docstrings

willmcgugan · willmcgugan · commit cf539293ff3b · 2022-11-23T17:15:03.000+08:00
diff --git a/src/textual/widgets/_tree.py b/src/textual/widgets/_tree.py
@@ -364,6 +364,7 @@ def cursor_node(self) -> TreeNode[TreeDataType] | None:
 
     @property
     def last_line(self) -> int:
+        """int: the index of the last line."""
         return len(self._tree_lines) - 1
 
     def process_label(self, label: TextType):
