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@@ -65,7 +65,10 @@ class LightManager:
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env = os.environ.copy()
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env["DEVICE_NUMBER"] = str(self.device_number)
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- Popen([str(self.args.bin_set_light.resolve()), "on" if on else "off"], env=env)
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+ p = Popen(
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+ [str(self.args.bin_set_light.resolve()), "on" if on else "off"], env=env
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+ )
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+ p.communicate()
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def do_waveform(self, status) -> tuple:
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last_set = None
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