Backport PR #19784: FIX errorbar problem with fillstyle

QuLogic · meeseeksmachine · commit 56c53bd05078 · 2021-03-30T03:04:17.000Z
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -3372,6 +3372,7 @@ def errorbar(self, x, y, yerr=None, xerr=None,
         base_style.pop('markeredgecolor', None)
         base_style.pop('markevery', None)
         base_style.pop('linestyle', None)
+        base_style.pop('fillstyle', None)
 
         # Make the style dict for the line collections (the bars).
         eb_lines_style = {**base_style, 'color': ecolor}
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -3414,6 +3414,16 @@ def test_errobar_nonefmt():
         assert np.all(errbar.get_color() == mcolors.to_rgba('C0'))
 
 
+def test_errorbar_fillstyle():
+    # Check that passing 'fillstyle' keyword will not result in errors
+    x = np.arange(5)
+    y = np.arange(5)
+
+    plotline, _, _ = plt.errorbar(x, y, xerr=1, yerr=1, ls='None',
+                                  marker='s', fillstyle='full')
+    assert plotline.get_fillstyle() == 'full'
+
+
 @check_figures_equal(extensions=['png'])
 def test_errorbar_with_prop_cycle(fig_test, fig_ref):
     ax = fig_ref.subplots()
