/：“str”和“str”的操作数类型不受支持

Question

print("Please enter your Weight")
weight = input(">")
print("Please enter your height")
height = input(">")
bmi = weight/height
if int(bmi) <= 18:
print("you are currently under weight")
elif int(bmi)>=24:
print("you are normal weight")
else:
print("you are over weight")

回溯

^{pr2}$

Answer 1

def enter_params(name):
    print("Please enter your {}".format(name))
    try:
        return int(input(">"))
    except ValueError:
        raise TypeError("Enter valid {}".format(name)) 
height = enter_params('height')
weight = enter_params('weight')
bmi = int(weight/height)
if bmi <= 18:
    print("you are currently under weight")
elif bmi >= 24:
    print("you are normal weight")
else:
    print("you are over weight")

Answer 2

print("Please enter your Weight")
weight = float(input())
print("Please enter your height")
height = float(input())
bmi = weight/height
if (bmi) <= 18:
print("you are currently under weight")
elif (bmi)>=24:
print("you are normal weight")
else:
print("you are over weight")

Answer 3

当输入数据时，它被保存为一个字符串。你需要做的是把它转换成一个int

print("Please enter your Weight")
weight = int(input(">"))
print("Please enter your height")
height = int(input(">"))
bmi = weight/height
if int(bmi) <= 18:
print("you are currently under weight")
elif int(bmi)>=24:
print("you are normal weight")
else:
print("you are over weight")

这将解决一个问题，但不能解决所有问题。如果您要输入一个十进制数，那么您将收到一个ValueError，因为int()处理整数。要解决此问题，您需要使用float()而不是int

^{pr2}$