Body Mass Index ( Imperial AND Metric )

bmi.py

#!/usr/bin/env python3

import sys

complete = False
print('Ctrl+C / Ctrl+D to quit at anytime')

def bmi():
    try:
        measurement_type = input('(I)mperial or (M)etric?: ')
        if measurement_type.casefold() in ['i', 'imperial', 'american']:
            height = int(input('Height in inches (whole number): '))
            weight = int(input('Weight in pounds (whole number again): '))
            bmi = round((weight / height ** 2) * 703.0, 2)
        elif measurement_type.casefold() in ['m', 'metric']:
            height = float(input('Height in meters (floating number like 1.0): '))
            weight = float(input('Weight in kilograms (floating number again): '))
            bmi = round((weight / height ** 2), 2)

        print('Your BMI is {}'.format(bmi))
        complete = True
        return complete

    except(NameError, UnboundLocalError, ValueError):
        print("That doesn't look right, let's restart.")

    except (EOFError, KeyboardInterrupt):
        print('\nGoodbye!')
        sys.exit()

while not complete:
    complete = bmi()