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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 get(self, name, failobj=None):
 """Get a header value. Like __getitem__() but return failobj instead of None when the field is missing. """

        name = name.lower()
        for k, v in self._headers:
            if k.lower() == name:
                return self.policy.header_fetch_parse(k, v)
        return failobj