FIX: restore ability to pass a tuple to axes_class in axes_grid

tacaswell · tacaswell · commit e5ca6bd76b60 · 2020-06-12T18:56:07.000-04:00
This was not documented by use, but is used in a cartopy example so
presumably has adaption in the wild.
diff --git a/lib/mpl_toolkits/axes_grid1/axes_grid.py b/lib/mpl_toolkits/axes_grid1/axes_grid.py
@@ -1,4 +1,5 @@
 from numbers import Number
+import functools
 
 import numpy as np
 
@@ -173,6 +174,9 @@ def __init__(self, fig,
 
         if axes_class is None:
             axes_class = self._defaultAxesClass
+        elif isinstance(axes_class, (list, tuple)):
+            cls, kwargs = axes_class
+            axes_class = functools.partial(cls, **kwargs)
 
         kw = dict(horizontal=[], vertical=[], aspect=aspect)
         if isinstance(rect, (str, Number, SubplotSpec)):
diff --git a/lib/mpl_toolkits/tests/test_axes_grid1.py b/lib/mpl_toolkits/tests/test_axes_grid1.py
@@ -18,6 +18,7 @@
 from mpl_toolkits.axes_grid1.axes_divider import HBoxDivider
 from mpl_toolkits.axes_grid1.inset_locator import (
     zoomed_inset_axes, mark_inset, inset_axes, BboxConnectorPatch)
+import mpl_toolkits.axes_grid1.mpl_axes
 
 import pytest
 
@@ -471,3 +472,9 @@ def test_hbox_divider():
     p2 = ax2.get_position()
     assert p1.height == p2.height
     assert p2.width / p1.width == pytest.approx((4 / 5) ** 2)
+
+
+def test_axes_class_tuple():
+    fig = plt.figure()
+    axes_class = (mpl_toolkits.axes_grid1.mpl_axes.Axes, {})
+    gr = AxesGrid(fig, 111, nrows_ncols=(1, 1), axes_class=axes_class)
