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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 _normalized_keys(self, section, items):
 # type: (str, Iterable[Tuple[str, Any]]) -> Dict[str, Any] """Normalizes items to construct a dictionary with normalized keys. This routine is where the names become keys and are made the same regardless of source - configuration files or environment. """

        normalized = {}
        for name, val in items:
            key = section + "." + _normalize_name(name)
            normalized[key] = val
        return normalized