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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 import_users(self, connection_id, file_obj, upsert=False):
 """Imports users to a connection from a file. Args: connection_id (str):
 The connection id of the connection to which users will be inserted. file_obj (file):
 A file-like object to upload. The format for this file is explained in: https://auth0.com/docs/bulk-import See: https://auth0.com/docs/api/management/v2#!/Jobs/post_users_imports """

        return self.client.file_post(self._url('users-imports'),
                                     data={'connection_id': connection_id, 'upsert': str(upsert).lower()},
                                     files={'users': file_obj})