docs: def get_session(url):
      """Get db session.
  
      :param url: URL for connect with DB
      :type url: :class:`str`
  
      :returns: A sqlalchemy db session
      :rtype: :class:`sqlalchemy.orm.Session`
  
      """
      engine = create_engine(url)
      db_session = scoped_session(sessionmaker(engine))
      Base.metadata.create_all(engine)
      return db_session