[Python] Im trying to make a reciept maker with code and i don't know how to get my different...

#The total will be the price paid by the customer after the discount and the tax.
#Create a main function, getItem function, getDiscount function, getTaxRate function
#getTotal function. #Use pass through variables.


trying to make this little project to improve my knowledge but idk how to properly use the return function to make this work

print ("*****Jeremy's BBQ for You*****")
import datetime
now = datetime.datetime.now()
print(" ",now)
def main ():
getItem()
getItem2()
getDiscount()
getTaxrate()
getTotal()
def getItem():
item_name = input("Enter in the name of the purchased item: ")
def getItem2():
item_price = float(input("Enter the price of the item being purchased: "))
print (item_price)
def getDiscount():
store_discount = item_price * float(.1)
print ("You are recieving a 10% discount of: ",store_discount)
return item_price
def getTaxrate():
tax_rate = item_price* float(.06)
def getTotal():
total = item_price+store_discount+tax_rate
main()
print ("6% Tax")


this is the error i get when i try and run the code. I'm assuming it because I'm not properly defining my functions so that the can be re referenced to its the return function i need right and how do i insert it. do i also have to add in the variables in the () when defining the functions while adding the return.

Traceback (most recent call last):
File "/home/main.py", line 37, in <module>
main()
File "/home/main.py", line 20, in main
getDiscount()
File "/home/main.py", line 30, in getDiscount
store_discount = item_price * float(.1)
^^^^^^^^^^
NameError: name 'item_price' is not defined

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