Body Mass Index using Python elif

#Body Mass Index (BMI) calculator in Python code: Writtn by  Ken Adams 3rd August 2019
#Formula: BMI = weight in Kilograms divided by the square of hight in meters.
#In this code the BMI is rounded to one decimal place.
#Code Notes: The BMI is calculated and then the user is given advice as to what catogary they belong to.
#Catogries run from hyper obese, obese, overweight, normal, underweight, and severly underweight.
#Reference:The formula and catogories are taken from Wikipedia.
#The 'if' statement recogonises anyone with a BMI over 60 as hyper obese. The next catogory is obese,
#with a range 30 < BMI =< 60. As greater than 60 has already been tested we only need to check if the
#user's BMI is greater than 30; we do this with an 'elif'. Similarly we drop through the other catogories
#with 'elif' statements. The final catogory 'severly underweight' is never tested because we can
#assume that the user is less than 15 if they did not fit any of the other catogories. So at the end
#if-elif block the case less than or equal to 15 is flaged up with an 'else' statement.
weight = float(input("What is your weight in kilograms? "))
height = float(input("What is your height in metres? "))
BMI =  weight/height**2
BMI =round(BMI,1)
print("weight " + str(weight) + "kg, " + "height " + str(height) + "m, and " +"BMI " + str(BMI) + "kg/m^2" )

if BMI > 60:
    print("\nYou are hyper obese see a doctor.")
elif BMI > 30:
    print("\nYou are obese, please exercise and diet.")
elif BMI >25:
    print("\nYou are overweight, please exercise and diet.")
elif BMI >18.5:
    print("\nYou are normal, well done.")
elif BMI > 15:
    print("\nYou are underweight, get your health checked.")
else:
    print("\nIt seems your BMI is less than 15 you are very severly underweight, see a doctor.")
print("bye")