This code helps you figure out your BMI! Can perform three calculations. Also has a built in quit function. NEW! now can figure up to 10 calculations! I also have a version with metric calculations.

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#!/usr/bin/env python
##Author: Alex Cruz
# If user types in q, program terminates
# If user types in other than q, program
# continues and calcualtes bmi
def main():
quit = False
count = 0
answer = raw_input('\nEnter "q" to quit or other to continue: ')
if answer == 'q':
quit = True
# Caclulates bmi 3 times prompting user to type in 'q'
# or another letter to continue with bmi calculation
while (not quit and count < 10):
print '-------------------------'
print 'This is to calculate your BMI or Body Mass Index'
print '-------------------------'
weight = float(input('Enter weight in kilograms: '))
height = float(input('Enter height in meters: '))
# Weight cannot be less than 0 or greater than 500
if weight <= 0 or weight > 500:
print 'Weight cannot be less than 0 or greater than 500'
continue
# Height cannot be less than or equal to 0 inches
elif height <= 0:
print 'Height cannot be less than 0'
continue
else:
bmi = (weight / (height * height))
print 'Your BMI is %.2f' % bmi
if bmi <= 18.5:
print 'Your weight status is Underweight'
elif bmi >= 18.5 and bmi <= 24.9:
print 'Your weight status is Normal weight'
elif bmi >= 25 and bmi <= 29.9:
print 'Your weight status is Overweight'
elif bmi >= 30:
print 'Your weight status is Obese'
# increments bmi calculation by 1 with a total of 3 bmi calculations
count = count + 1
if count < 10:
answer = raw_input('\nEnter "q" to quit: ')
if answer == 'q':
quit = True
main()
raw_input('\n<enter> to exit')
``` |

Tell me if you have any improvements you would like to see.

Tags: bmi, calculator