为什么最后的程序结束打不出来？，该怎么办呢？

k=0while k==0: H=float(input("身高(m)=")) W=float(input("体重(kg)=")) if H>3 or H<=0 or W<0: print("身高或体重数据异常，请重新输入：") contiune else: BMI=W/(H**2) print("BMI=",BMI) if BMI<15.0: print("Very severely") elif 15<=BMI<=16: print("Severely underweight") elif 16<=BMI<18.5: print("Underweight") elif 18.5<=BMI<25: print("Normal(healthy weight)") elif 25<=BMI<30: print("Overweight") elif 30<=BMI<35: print("Obese ClassI(Mo
derately obese)") elif 35<=BMI<40: print("Obese ClassII(Severely obese)") elif 40<=BMI: print("Obese ClassIII(Very severely obese)") k=float(input("如果你想继续，请输入0，否则将结束。："))print("程序结束")

k = 0
BMI = 0
while k == 0:
    H = float(input("身高(m)="))
    W = float(input("体重(kg)="))
    if H > 3 or H <= 0 or W < 0:
        print("身高或体重数据异常，请重新输入：")
        continue
    else:
        BMI = W / (H ** 2)
        print("BMI=", BMI)
    if BMI < 15.0:
        print("Very severely")
    elif 15 <= BMI <= 16:
        print("Severely underweight")
    elif 16 <= BMI < 18.5:
        print("Underweight")
    elif 18.5 <= BMI < 25:
        print("Normal(healthy weight)")
    elif 25 <= BMI < 30:
        print("Overweight")
    elif 30 <= BMI < 35:
        print("Obese ClassI(Moderately obese)")
    elif 35 <= BMI < 40:
        print("Obese ClassII(Severely obese)")
    elif 40 <= BMI:
        print("Obese ClassIII(Very severely obese)")
    k = float(input("如果你想继续，请输入0，否则将结束。："))
    if k != '0':
        print("程序结束")
        break

判断最后输入是否为0,如果是则继续,如果不是,则跳出循环,程序退出

代码块格式化一下吧，读起来太困难