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							#!/usr/bin/env python
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							import argparse
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							import platform
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							parser = argparse.ArgumentParser()
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							parser.add_argument("--my_arg", "-a")
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							args = parser.parse_args()
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							answer = (platform.system() == "Windows" and
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							          args.my_arg == "/dev/null" and "ERROR") or "OK"
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							print(answer)
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