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Backport PR #25240 on branch v3.7.x (Avoid calling vars() on arbitrary third-party manager_class.) #25246

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Merged
merged 1 commit into from
Feb 18, 2023
Merged

Backport PR #25240 on branch v3.7.x (Avoid calling vars() on arbitrary third-party manager_class.) #25246

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2 changes: 1 addition & 1 deletion lib/matplotlib/backends/backend_qt.py
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Original file line number Diff line number Diff line change
Expand Up @@ -898,7 +898,7 @@ def _tight_layout(self):
self._figure.tight_layout()
for attr, spinbox in self._spinboxes.items():
spinbox.blockSignals(True)
spinbox.setValue(vars(self._figure.subplotpars)[attr])
spinbox.setValue(getattr(self._figure.subplotpars, attr))
spinbox.blockSignals(False)
self._figure.canvas.draw_idle()

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11 changes: 6 additions & 5 deletions lib/matplotlib/pyplot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -325,11 +325,12 @@ def draw_if_interactive():
# show is already present, as the latter may be here for backcompat.
manager_class = getattr(getattr(backend_mod, "FigureCanvas", None),
"manager_class", None)
# We can't compare directly manager_class.pyplot_show and FMB.pyplot_show
# because pyplot_show is a classmethod so the above constructs are bound
# classmethods, & thus always different (being bound to different classes).
manager_pyplot_show = vars(manager_class).get("pyplot_show")
base_pyplot_show = vars(FigureManagerBase).get("pyplot_show")
# We can't compare directly manager_class.pyplot_show and FMB.pyplot_show because
# pyplot_show is a classmethod so the above constructs are bound classmethods, and
# thus always different (being bound to different classes). We also have to use
# getattr_static instead of vars as manager_class could have no __dict__.
manager_pyplot_show = inspect.getattr_static(manager_class, "pyplot_show", None)
base_pyplot_show = inspect.getattr_static(FigureManagerBase, "pyplot_show", None)
if (show is None
or (manager_pyplot_show is not None
and manager_pyplot_show != base_pyplot_show)):
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