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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fault_barrier(fn):
 """Method decorator to catch and log errors, then send fail message."""

    @functools.wraps(fn)
    def process(self, tup):
        try:
            return fn(self, tup)
        except Exception as e:
            if isinstance(e, KeyboardInterrupt):
                return
            print(str(e), file=sys.stderr)
            self.fail(tup)
    return process