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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 object_deserializer(obj):
 """Helper to deserialize a raw result dict into a proper dict. :param obj: The dict. """

    for key, val in obj.items():
        if isinstance(val, six.string_types) and DATETIME_REGEX.search(val):
            try:
                obj[key] = dates.localize_datetime(parser.parse(val))
            except ValueError:
                obj[key] = val
    return obj