Update widgets.py

Author: Tortar

lib/matplotlib/widgets.py

@@ -993,7 +993,7 @@ class TextBox(AxesWidget):
     submit_observers = _api.deprecated("3.4")(property(
         lambda self: self._observers.callbacks['submit']))
     DIST_FROM_LEFT = _api.deprecated("3.5")(property(
-        lambda self: self.DIST_FROM_LEFT))
+        lambda self: self._DIST_FROM_LEFT))
 
     def __init__(self, ax, label, initial='',
                  color='.95', hovercolor='1', label_pad=.01,
@@ -1017,9 +1017,9 @@ def __init__(self, ax, label, initial='',
             The horizontal location of the text.
         """
         super().__init__(ax)
-        
-        self.DIST_FROM_LEFT = .05
-        
+
+        self._DIST_FROM_LEFT = .05
+
         self._text_position = _api.check_getitem(
                                 {"left": 0.05,
                                  "center": 0.5,