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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 add(self, path):
 """Adds a new resource with the given path to the resource set. Parameters: * **path (str, unicode):
** path of the resource to be protected Raises: TypeError when the path is not a string or a unicode string """

        if not isinstance(path, str) and not isinstance(path, unicode):
            raise TypeError('The value passed for parameter path is not a str'
                            ' or unicode')

        resource = Resource(path)
        self.resources[path] = resource
        return resource