最简单的是遍历,就不赘述了。下面介绍转成set 方法 转成 setproduct_id_list = ['10047', '8156', '10788', '12']current = ['1', '200', '10047', '34']product_id_list.extend(current)print(','.join(set(product_id_list)))# 也可以这样写product_ids = ','.join((item) for item in set(product_id_list))print(product_ids)