diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
index 181293b7983c..4b89640ffcc5 100644
--- a/lib/matplotlib/axes/_base.py
+++ b/lib/matplotlib/axes/_base.py
@@ -542,17 +542,25 @@ def __getstate__(self):
# The renderer should be re-created by the figure, and then cached at
# that point.
state = super().__getstate__()
- state['_cachedRenderer'] = None
- state.pop('_layoutbox')
- state.pop('_poslayoutbox')
-
+ for key in ['_cachedRenderer', '_layoutbox', '_poslayoutbox']:
+ state[key] = None
+ # Prune the sharing & twinning info to only contain the current group.
+ for grouper_name in [
+ '_shared_x_axes', '_shared_y_axes', '_twinned_axes']:
+ grouper = getattr(self, grouper_name)
+ state[grouper_name] = (grouper.get_siblings(self)
+ if self in grouper else None)
return state
def __setstate__(self, state):
+ # Merge the grouping info back into the global groupers.
+ for grouper_name in [
+ '_shared_x_axes', '_shared_y_axes', '_twinned_axes']:
+ siblings = state.pop(grouper_name)
+ if siblings:
+ getattr(self, grouper_name).join(*siblings)
self.__dict__ = state
self._stale = True
- self._layoutbox = None
- self._poslayoutbox = None
def get_window_extent(self, *args, **kwargs):
"""
diff --git a/lib/matplotlib/tests/test_pickle.py b/lib/matplotlib/tests/test_pickle.py
index 719dc7356fc8..1ba2e097181e 100644
--- a/lib/matplotlib/tests/test_pickle.py
+++ b/lib/matplotlib/tests/test_pickle.py
@@ -185,3 +185,10 @@ def test_rrulewrapper():
except RecursionError:
print('rrulewrapper pickling test failed')
raise
+
+
+def test_shared():
+ fig, axs = plt.subplots(2, sharex=True)
+ fig = pickle.loads(pickle.dumps(fig))
+ fig.axes[0].set_xlim(10, 20)
+ assert fig.axes[1].get_xlim() == (10, 20)
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