BMI.py

def input_variables():
 
 print("Name:")
 name = input("Enter the name of the person.")
 
 print("Age:")
 age = int(input("Enter the age of the person."))

 print("Sex:")
 sex = input("Enter sex: M for male, F for female, O for non binary.")
 while sex!= 'M' and sex!='F' and sex!='O':
 print("Incorrect choice.")
 sex = input("Enter sex: M for male, F for female, O for non binary.")
 
 print("Weight:")
 unit_weight = input("Press 1 for kilograms, 2 for pounds.")
 while unit_weight!= '1' and unit_weight!='2':
 print("Incorrect choice.")
 unit_weight = input("Press 1 for kilograms, 2 for pounds.")
 if unit_weight == '1':
 weight_in_kg = float(input("Enter the weight of the person in kilograms."))
 else:
 weight_in_kg = float(input("Enter the weight of the person in pounds."))*0.453592
 
 print("Height:")
 unit_height = input("Press 1 for meters and centimeters, 2 for feet and inches")
 while unit_weight!= '1' and unit_weight!='2':
 print("Incorrect choice.")
 unit_height = input("Press 1 for meters and centimeters, 2 for feet and inches")
 if unit_height == '1':
 height_in_m = float(input("Enter the height of the person in meters.")) + float(input("Enter the remaining height of the person in centimeters"))*0.01
 else:
 height_in_m = (float(input("Enter the height of the person in feet"))*12 + float(input("Enter the remaining height of the person in inches")))*0.0254

 return name, age, sex, weight_in_kg, height_in_m

def calculate_BMI(info):
 wt = info[3]
 ht = info[4]
 BMI = wt/(ht**2)

 return BMI

def find_body_state(BMI):
 if BMI<18.5:
 body_state = 'underweight'
 elif BMI<24.9:
 body_state = 'normal'
 elif BMI<29.9:
 body_state = 'overweight'
 else:
 body_state = 'obese'

 return body_state

def output():
 info = input_variables()
 BMI = calculate_BMI(info)
 body_state = find_body_state(BMI)

 print("Name: {}\nAge: {}\nGender: {}\nWeight(in kg): {:.3f}\nHeight(in m): {:.2f}\nBody Mass Index: {:.2f}\nAcoording to your body mass index, you are {}.".format(info[0], info[1], info[2], info[3], info[4], BMI, body_state))

output()