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Commit5685b8d

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Clean up Qt socket notifier to avoid spurious interrupt handler calls
Closes#29688Objects without a parent are not necessarily cleaned up in PyQt whentheir reference count reaches zero, and must be explicitly cleaned upwith `deleteLater()`This prevents the notifier firing after the signal handling was supposedto have been reset to its previous state.
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‎lib/matplotlib/backend_bases.py‎

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@@ -1655,6 +1655,7 @@ def save_args_and_handle_sigint(*args):
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finally:
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wsock.close()
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rsock.close()
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notifier.deleteLater()
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signal.set_wakeup_fd(old_wakeup_fd)
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signal.signal(signal.SIGINT,old_sigint_handler)
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ifhandler_argsisnotNone:

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