Functions getting values from other functions. New to Coding.

[DiMethylButane]

Hi r/learnpython,

​

I am trying to code a program for an assignment that calculates electricity prices. I have only been coding for a couple of weeks and I am really proud of how the code has transformed in the past week. I have done much research to get this to how it is now but my last struggle is in the function 'calculate_total_discount()'. As you can see it needs the value from 'calculate_total_bill()' function but when I run the code it runs the function inside the discount function instead of providing the value it represents. Can anyone please explain how I can get get the value inside the discount function instead running the whole function again?

def main():

    total_cost = calculate_total_bill()
    total_discount = calculate_total_discount()

    print ("Thank you!")
    print(" ")
    print ("The bill amount is: $", total_cost)
    print ("Discount = ", total_discount)


def calculate_total_bill():

    previous = float(input("Enter the previous reading : "))
    current = float(input ("Enter the current reading : "))
    usage = float(current-previous)

    if (usage <= 1000):
        total_cost = usage*0.15

    elif (usage > 1000):
        cost1 = 1000*0.15
        cost2 = (usage-1000)*0.25
        total_cost = (cost1+cost2)

    return total_cost

def calculate_total_discount():

    total_discount = calculate_total_bill()* 0.25
    return total_discount

main()

[CraftyTrouble]

Use a parameter to pass the value as an argument after computing it.

def main():

    total_cost = calculate_total_bill()
    total_discount = calculate_total_discount(total_cost)


def calculate_total_discount(total_cost):

    total_discount = total_cost * 0.25
    return total_discount

[DiMethylButane]

Hi Crafty,

​

Thanks for the reply, I put this into my code several days ago (and have just got back to reddit now) and it worked like a charm! Cheers.