_get_camera should first verify both that camera is not null and not
closed before returning the cached object
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@ -63,7 +63,7 @@ class CameraPiPlugin(CameraPlugin):
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# noinspection PyUnresolvedReferences,PyPackageRequirements
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def _get_camera(self, **opts):
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if self._camera:
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if self._camera and not self._camera.closed:
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return self._camera
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import picamera
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