MNT: Remove keyword arguments to gca()

This removes the deprecated passing of keyword arguments to gca().

Author: greglucas

doc/api/next_api_changes/removals/23077-GL.rst

@@ -0,0 +1,4 @@
+Keyword arguments to ``gca()`` have been removed
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+There is no replacement.

lib/matplotlib/figure.py

@@ -1509,8 +1509,7 @@ def sca(self, a):
         self._axobservers.process("_axes_change_event", self)
         return a
 
-    @_docstring.dedent_interpd
-    def gca(self, **kwargs):
+    def gca(self):
         """
         Get the current Axes.
 
@@ -1519,25 +1518,9 @@ def gca(self, **kwargs):
         Axes on a Figure, check whether ``figure.axes`` is empty.  To test
         whether there is currently a Figure on the pyplot figure stack, check
         whether `.pyplot.get_fignums()` is empty.)
-
-        The following kwargs are supported for ensuring the returned Axes
-        adheres to the given projection etc., and for Axes creation if
-        the active Axes does not exist:
-
-        %(Axes:kwdoc)s
-        """
-        if kwargs:
-            _api.warn_deprecated(
-                "3.4",
-                message="Calling gca() with keyword arguments was deprecated "
-                "in Matplotlib %(since)s. Starting %(removal)s, gca() will "
-                "take no keyword arguments. The gca() function should only be "
-                "used to get the current axes, or if no axes exist, create "
-                "new axes with default keyword arguments. To create a new "
-                "axes with non-default arguments, use plt.axes() or "
-                "plt.subplot().")
+        """
         ax = self._axstack.current()
-        return ax if ax is not None else self.add_subplot(**kwargs)
+        return ax if ax is not None else self.add_subplot()
 
     def _gci(self):
         # Helper for `~matplotlib.pyplot.gci`.  Do not use elsewhere.

lib/matplotlib/pyplot.py

@@ -2277,8 +2277,8 @@ def figtext(x, y, s, fontdict=None, **kwargs):
 
 # Autogenerated by boilerplate.py.  Do not edit as changes will be lost.
 @_copy_docstring_and_deprecators(Figure.gca)
-def gca(**kwargs):
-    return gcf().gca(**kwargs)
+def gca():
+    return gcf().gca()
 
 
 # Autogenerated by boilerplate.py.  Do not edit as changes will be lost.

lib/matplotlib/tests/test_axes.py

@@ -2579,42 +2579,10 @@ def _as_mpl_axes(self):
     prj = Polar()
     prj2 = Polar()
     prj2.theta_offset = np.pi
-    prj3 = Polar()
 
     # testing axes creation with plt.axes
     ax = plt.axes([0, 0, 1, 1], projection=prj)
     assert type(ax) == PolarAxes
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax_via_gca = plt.gca(projection=prj)
-    assert ax_via_gca is ax
-    plt.close()
-
-    # testing axes creation with gca
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax = plt.gca(projection=prj)
-    assert type(ax) == mpl.axes._subplots.subplot_class_factory(PolarAxes)
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax_via_gca = plt.gca(projection=prj)
-    assert ax_via_gca is ax
-    # try getting the axes given a different polar projection
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax_via_gca = plt.gca(projection=prj2)
-    assert ax_via_gca is ax
-    assert ax.get_theta_offset() == 0
-    # try getting the axes given an == (not is) polar projection
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax_via_gca = plt.gca(projection=prj3)
-    assert ax_via_gca is ax
     plt.close()
 
     # testing axes creation with subplot

lib/matplotlib/tests/test_figure.py

@@ -13,7 +13,6 @@
 
 import matplotlib as mpl
 from matplotlib import gridspec, rcParams
-from matplotlib._api.deprecation import MatplotlibDeprecationWarning
 from matplotlib.testing.decorators import image_comparison, check_figures_equal
 from matplotlib.axes import Axes
 from matplotlib.figure import Figure, FigureBase
@@ -189,62 +188,30 @@ def test_figure_legend():
 def test_gca():
     fig = plt.figure()
 
+    # test that gca() picks up Axes created via add_axes()
     ax0 = fig.add_axes([0, 0, 1, 1])
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        assert fig.gca(projection='rectilinear') is ax0
     assert fig.gca() is ax0
 
-    ax1 = fig.add_axes(rect=[0.1, 0.1, 0.8, 0.8])
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        assert fig.gca(projection='rectilinear') is ax1
+    # test that gca() picks up Axes created via add_subplot()
+    ax1 = fig.add_subplot(111)
     assert fig.gca() is ax1
 
-    ax2 = fig.add_subplot(121, projection='polar')
-    assert fig.gca() is ax2
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        assert fig.gca(polar=True) is ax2
-
-    ax3 = fig.add_subplot(122)
-    assert fig.gca() is ax3
-
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        assert fig.gca(polar=True) is ax3
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        assert fig.gca(polar=True) is not ax2
-    assert fig.gca().get_subplotspec().get_geometry() == (1, 2, 1, 1)
-
     # add_axes on an existing Axes should not change stored order, but will
     # make it current.
     fig.add_axes(ax0)
-    assert fig.axes == [ax0, ax1, ax2, ax3]
+    assert fig.axes == [ax0, ax1]
     assert fig.gca() is ax0
 
+    # sca() should not change stored order of Axes, which is order added.
+    fig.sca(ax0)
+    assert fig.axes == [ax0, ax1]
+
     # add_subplot on an existing Axes should not change stored order, but will
     # make it current.
-    fig.add_subplot(ax2)
-    assert fig.axes == [ax0, ax1, ax2, ax3]
-    assert fig.gca() is ax2
-
-    fig.sca(ax1)
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        assert fig.gca(projection='rectilinear') is ax1
+    fig.add_subplot(ax1)
+    assert fig.axes == [ax0, ax1]
     assert fig.gca() is ax1
 
-    # sca() should not change stored order of Axes, which is order added.
-    assert fig.axes == [ax0, ax1, ax2, ax3]
-
 
 def test_add_subplot_subclass():
     fig = plt.figure()

lib/matplotlib/tests/test_pyplot.py

@@ -234,7 +234,7 @@ def test_subplot_kwarg_collision():
     assert ax1 not in plt.gcf().axes
 
 
-def test_gca_kwargs():
+def test_gca():
     # plt.gca() returns an existing axes, unless there were no axes.
     plt.figure()
     ax = plt.gca()
@@ -243,30 +243,6 @@ def test_gca_kwargs():
     assert ax1 is ax
     plt.close()
 
-    # plt.gca() raises a DeprecationWarning if called with kwargs.
-    plt.figure()
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax = plt.gca(projection='polar')
-    ax1 = plt.gca()
-    assert ax is not None
-    assert ax1 is ax
-    assert ax1.name == 'polar'
-    plt.close()
-
-    # plt.gca() ignores keyword arguments if an Axes already exists.
-    plt.figure()
-    ax = plt.gca()
-    with pytest.warns(
-            MatplotlibDeprecationWarning,
-            match=r'Calling gca\(\) with keyword arguments was deprecated'):
-        ax1 = plt.gca(projection='polar')
-    assert ax is not None
-    assert ax1 is ax
-    assert ax1.name == 'rectilinear'
-    plt.close()
-
 
 def test_subplot_projection_reuse():
     # create an Axes