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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 _parse_manifest(self):
 """ Read the defined file, parse and set Version line, and return generator of filenames. """

        with open(self.manifest_file, 'r') as f:
            for line in f:
                if line.startswith("Version"):
                    self.mver, self.relnum = self._parse_version(line)
                lineitems = line.split('  ')
                if len(lineitems) == 2:
                    asset_url = self._get_url(lineitems[1][:-1])
                    yield grequests.get(asset_url, stream=True)