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Co-authored-by: Elliott Sales de Andrade <[email protected]>

Author: oscargus

doc/api/next_api_changes/deprecations/24071-OG.rst

@@ -1,9 +1,9 @@
-Passing undefined ``label_mode`` to ``Grid``
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Passing undefined *label_mode* to ``Grid``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 ... is deprecated. This includes `mpl_toolkits.axes_grid1.axes_grid.Grid`,
 `mpl_toolkits.axes_grid1.axes_grid.AxesGrid`, and
 `mpl_toolkits.axes_grid1.axes_grid.ImageGrid` as well as the corresponding
 classes imported from `mpl_toolkits.axisartist.axes_grid`.
 
-Pass ``'keep'`` instead to get the same behavior.
+Pass ``label_mode='keep'`` instead to get the previous behavior of not modifying labels.

lib/mpl_toolkits/axes_grid1/axes_grid.py

@@ -300,7 +300,7 @@ def set_label_mode(self, mode):
             if mode != 'keep':
                 _api.warn_deprecated(
                     '3.7', name="Grid label_mode",
-                    message='Passing a non-defined label_mode is deprecated '
+                    message='Passing an undefined label_mode is deprecated '
                             'since %(since)s and will become an error '
                             '%(removal)s. To silence this warning, pass '
                             '"keep", which gives the same behaviour.')

lib/mpl_toolkits/axes_grid1/tests/test_axes_grid1.py

@@ -408,7 +408,7 @@ def test_image_grid_label_mode_deprecation_warning():
 
     fig = plt.figure()
     with pytest.warns(_api.MatplotlibDeprecationWarning,
-                      match="Passing a non-defined label_mode"):
+                      match="Passing an undefined label_mode"):
         grid = ImageGrid(fig, (0, 0, 1, 1), (2, 1), label_mode="foo")