Python: Using defs in a program about ordering stuff

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This program is about ordering stuff from a "mail order" house thing.

They sell five products. P1 = 2.98, P2 = 4.5, P3 = 9.98, P4 = 4.49, P5 = 6.87

So this is my code so far.

#Imports: None

#Defs:

def userInput1():
    x = int(input("Product Number?")
    return x
def userInput2():
    q = int(input("Quantity?")
    return q
def calculations(x,q):
    p1 = 2.98
    p2 = 4.5
    p3 = 9.98
    p4 = 4.49
    p5 = 6.87
    subtotal = q * x
    return subtotal
def final(subtotal):
    print ("Total:", subtotal)
def loop():
    print ("Do you want to continue? (yes/no)")
    cont = raw_input()
    if cont = 'yes':
        main()
    return
    else:
        final()

def main()
    x = userinput()
    subtotal = calculations()
    final(subtotal)

#Driver:
main()

I have to use a sentinel controlled loop.

Here's how it should work.

Product number?: 1
Quantity?: 2
Continue?(yes/no): yes
Product number?: 2
Quantity?: 5
Continue?(yes/no): yes
Product number?: 3
Quantity?: 3
Continue?(yes/no): yes
Product number?: 4
Quantity?: 1
Continue?(yes/no): no
Total: $62.89 

I keep getting syntax error when I use return. Please help!

asked 7 mins ago

Player72

21

Python: Using defs in a program about ordering stuff