code: def grant_privilege(self, privilege, database, username):
          
          text = "GRANT {0} ON {1} TO {2}".format(privilege,
                                                  quote_ident(database),
                                                  quote_ident(username))
          self.query(text, method="POST")
docs: Grant a privilege on a database to a user.
  
          :param privilege: the privilege to grant, one of 'read', 'write'
              or 'all'. The string is case-insensitive
          :type privilege: str
          :param database: the database to grant the privilege on
          :type database: str
          :param username: the username to grant the privilege to
          :type username: str