用Python读取csv文件,并利用已有数据计算bmi值

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求指导,利用Python读取csv文件并计算bmi的值,求指导。或者可以告诉我如何利用身高列表和体重列表计算出bmi值得列表吗(即)两列表对应元素相计算

with open("1.csv","r") as f:
    with open("2.csv","w") as F:
        n=1
        for i in f:
            if n!=1:
              bmi=int(i[2])/int(i[1])**2
              F.write(i+","+bmi)
            else:
              F.write(i+","+"bmi")
    F.close()
f.close()