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Restore axes sharedness when unpickling. #11544

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Merged
merged 1 commit into from
Jul 4, 2018
Merged

Restore axes sharedness when unpickling. #11544

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20 changes: 14 additions & 6 deletions lib/matplotlib/axes/_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -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):
"""
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7 changes: 7 additions & 0 deletions lib/matplotlib/tests/test_pickle.py
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Original file line number Diff line number Diff line change
Expand Up @@ -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)