product = [["冰箱", 2199],["电饭煲", 399],["洗衣液", 59],["吹风机", 129]]
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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