Can someone please explain why this isn't working?

Question

Can some pls explain why this code isn't working?
I know I am an amature so it may have a lot of problems lol
But why isn't it working?
https://code.sololearn.com/clPipht2D9Wz/?ref=app

Answer 1

You must specify what you are comparing in order to complete the boolean expression.

elif user_bmi >= 18.5 or < 25:

Should be:
elif user_bmi >= 18.5 or user_bmi < 25:

Also, there is no need to check if user_bmi >= 18.5 since at this point in the logic you already established that it is not < 18.5. Now you only need to check if it is < 25.

if user_bmi < 18.5:
print("Underweight")
elif user_bmi < 25:
print("Normal")

The same improvement applies to the 30 threshold. The final elif should be a simple else.

Answer 2

Preeyansh Tibrewal ,

there is also a issue with the logical operator in the conditional statements.

we can not use *or* to build this logic, it needs to be *and* . to reduce the confusion, here is the complete code:

weight = int(input())
height = float(input())
user_bmi = weight / height ** 2

if user_bmi < 18.5:
print("Underweight")
elif user_bmi >= 18.5 and user_bmi < 25:
print("Normal")
elif user_bmi >= 25.0 and user_bmi < 30:
print("Overweight")
elif user_bmi >= 30.0:
print("Obesity")

Answer 3

Preeyansh Tibrewal ,

that is great, congratulations !!!

Answer 4

Lothar Yes that was an issue too but I can proudly say that I figured it out myself yesterday 😤

Answer 5

Input weight first, then height.

Answer 6

It had some other smaller issues too
Had to take some time to solve it
But that's what helps me improve!

Answer 7

It says syntax error in line 6 Brian