99 Bottles of Beer on the wall

bottles.py

tensPlaceStrings = { 2:"Twenty", 3:"Thirty", 4:"Forty", 5:"Fifty", 6:"Sixty", 7:"Seventy", 8:"Eighty", 9:"Ninety"}
oneToNineteenStrings = {1:"One", 2:"Two", 3:"Three", 4:"Four", 5:"Five", 6:"Six",7:"Seven",8:"Eight",9:"Nine",
                        10:"Ten",11:"Eleven", 12:"Twelve", 13:"Thirteen", 14:"Fourteen", 15:"Fifteen", 16:"Sixteen",
                        17:"Seventeen", 18:"Eighteen", 19:"Nineteen"}

def bottlePlural(num):
    if num != 1:
        return "bottles"
    else:
        return "bottle"
    
def numberToString(num):
    if num > 99: 
        print("error")
    elif num > 19:
        prefixNum = num // 10
        postfixNum = num % 10
        if postfixNum != 0:
            return tensPlaceStrings[prefixNum] + "-" + oneToNineteenStrings[postfixNum]
        else:
            return tensPlaceStrings[prefixNum]
    elif num > 0:
        return oneToNineteenStrings[num]
    elif num == 0:
        return  "No More"

for numBottles in reversed(range(1, 100)):
        print(numberToString(numBottles) + " " + bottlePlural(numBottles) + " of beer on the wall,")
        print(numberToString(numBottles) + " " + bottlePlural(numBottles) + " of beer!")
        print("Take one down, pass it around...")
        print(numberToString(numBottles-1) + " " + bottlePlural(numBottles-1) + " of beer on the wall!")
        print("")