product=[["冰箱",2199],["电饭煲",399],["洗衣液",59]]
for item in product:
print("商品:{},价格:{}".format(item[0],item[1]))
del product[1]
product.append(["空气炸锅",499])
print("修改后商品列表:",product)
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商品:冰箱,价格:2199
商品:电饭煲,价格:399
商品:洗衣液,价格:59
修改后商品列表: [['冰箱', 2199], ['洗衣液', 59], ['空气炸锅', 499]]