TypeError: can't multiply sequence by non-int of type 'float' in Python

Dung Do Tien Aug 15 2021 46

Hello you guys, I have a problem need your help. I created a small project with Python 3.8.2 to help calculate BMI points for humans. You can see like this:

weight = input('How much do you weigh?:')
height = input('How tall are you?:')
bmi = weight / (height * 2.0)
print('BMI: ', bmi)

But when I'm inputting weight = 80 and tall = 1.76 I get an error throw TypeError: can't multiply sequence by non-int of type 'float'

How much do you weigh?:80
How tall are you?:1.76
Traceback (most recent call last):
  File "main.py", line 3, in <module>
    bmi = weight / (height * 2.0)
TypeError: can't multiply sequence by non-int of type 'float'

How can I resolve it?
Thanks for any suggestions.

Have 1 answer(s) found.
  • T

    Tran Quang Hung Aug 15 2021

    You need to convert a string input value to float before calculate by using float() method, like:

    weight = float(input('How much do you weigh?:'))
    height = float(input('How tall are you?:'))
    bmi = weight / (height * 2.0)
    print('BMI: ', bmi)
    
    How much do you weigh?:90
    How tall are you?:1.80
    BMI:  25.0

    I hope it is useful for you.

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