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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 raw(self, use_local=True):
 """Load the raw dataset from remote URL or local file Parameters use_local : boolean If True (default), then attempt to load the dataset locally. If False or if the dataset is not available locally, then load the data from an external URL. """

        if use_local and self.is_local:
            return pkgutil.get_data('vega_datasets', self.pkg_filename)
        else:
            return urlopen(self.url).read()