How do I covert height from Feet (ex: 5'8") to inches in a BMI Calculator?

[Fuugie]

I am having trouble trying to figure out a way to convert the feet to inches and have this still work. i have ran into a brick wall pretty much and could use all the help i could get.

The correct output code is suppose to look like this:

What is your height (e.g., 5'8"):
what is your weight (in pounds):
Your BMI is...

So far my code looks like this, because i can not figure out a way to get it to convert and come out correctly.

height = raw_input('''What is your height (e.g., 5'8"): ''')
weight = raw_input('What is your weight (in pounds): ')

BMI = (703 * weight) / (height * height)

print 'Your BMI is %.4f'%(BMI)

raw_input()

any help would be greatly appreciated. thank you in advance!

[bvdet]

Use string method split() to separate the feet and inches. Example:

>>> height = "5'8\""
>>> height
'5\'8"'
>>> height.split("'")
['5', '8"']
>>> ft, inches = height.split("'")
>>> 12*int(ft) + int(inches.strip('"'))
68
>>>

[Fuugie]

Ok thank you for the help, the formula works like it should, but i cant get it to work and calculate the BMI.

height = raw_input('''What is your height (e.g., 5'8"): ''')
weight = raw_input('What is your weight (in pounds): ')

height.split("'")

ft, inches = height.split("'")

height = 12 * int(ft) + int(inches.strip('"'))

BMI = (703 * weight) / (height * height)

print 'Your BMI is%.4f'%(BMI)

raw_input()

I get the following error:

Traceback (most recent call last):
  File "E:\CSIS\Projects\ex2_34.py", line 16, in <module>
    BMI = (703 * weight) / (height * height)
TypeError: unsupported operand type(s) for /: 'str' and 'int'

what am i doing wrong?

[bvdet]

raw_input() returns a string. Type cast the value to float as in:

>>> weight = "150"
>>> float(weight)
150.0
>>>

[Fuugie]

I'm not quite understanding where this is suppose to go...

this is my input:

height = raw_input('''What is your height (e.g., 5'8"): ''')
weight = raw_input('What is your weight (in pounds): ')

height.split("'")

ft, inches = height.split("'")

height_sum = 12 * int(ft) + int(inches.strip('"'))

BMI = float(703 * weight) / float(height_sum * height_sum)

print 'Your BMI is %.2f'%(BMI)

raw_input()

and this is my result:

What is your height (e.g., 5'8"): 5'10"
What is your weight (in pounds): 140
Your BMI is 1.$

I am a bit new to this so im not sure exactly what to do :/

[bvdet]

See if this helps:

>>> float(703*'140')
1.#INF
>>> weight = '140'
>>> 2*weight
'140140'
>>> float(2*weight)
140140.0
>>> 2*float(weight)
280.0
>>>

Can you see where you went wrong?

[Fuugie]

:D yes! i understand now. will that happen every time i have it setup that way? thank you so much for the help!