parametersfunction.py

def needed_calories(weight, height, age, gender, activity, unit): # Function to calculate the needed calories and protein intake
    # setting all the variables to function required data types
    weight = float(weight)
    try:
        height = float(height)
    except:
        height = height.split("'")
        height = float(height[0]) * 12 + float(height[1])
    age = int(age) 
    calories = 0
    protein = 0
    gender = gender.lower()
    activity = activity.lower()
    unit = unit.lower()
    #calculatint the calories
    if unit == 'metric': # checking if it is metric or imperial
        if gender == "male": # checking gender
            calories = (10 * weight) + (6.25 * height) - (5 * age) + 5 # calculating calories
        elif gender == "female":
            calories = (10 * weight) + (6.25 * height) - (5 * age) - 161
    elif unit == 'imperial':
        weight = weight * 0.453592 # converting weight to kg
        height = height * 2.54 # converting height to cm
        if gender == "male": # checking gender
            calories = (10 * weight) + (6.25 * height) - (5 * age) + 5 # calculating calories
        elif gender == "female":
            calories = (10 * weight) + (6.25 * height) - (5 * age) - 161
    # calculating the calories based on activity level
    if activity == 'sedentary':
        calories = calories * 1.2
    elif activity == 'lightly active':
        calories = calories * 1.375
    elif activity == 'moderately active':
        calories = calories * 1.55
    elif activity == 'very active':
        calories = calories * 1.725
    elif activity == 'super active':
        calories = calories * 1.9
    # calculating the protein intake

    if activity == 'sedentary' or activity == "lightly active":
        protein = weight * 0.8
    elif activity == 'moderately active':
        protein = weight * 1.2
    elif activity == 'very active' or activity == 'super active':
        protein = weight * 1.8
    # returning the calories and protein intake calories first protein second
    calories = round(calories, 0)
    protein = round(protein, 0)
    return int(calories), int(protein)

if __name__ == "__main__": ## This is for testing purposes
    print(needed_calories(200, "6'7", 19, "male", "sedentary", "imperial"))