cant get it to work please help

1 def numbers to strings(argument) switcher-t 0: "Zero", 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", 19: "nineteen", 20: "twenty", 30: "thirty", 40: "forty", 50: "Fifty", 60: "sixty", 70: "seventy", 80: "eighty", 90: "ninety", 7 9 10 12 13 14 15 16 17 18 19 20 21 23 24 25 26 27 28 29 30 31 return switcher.getCarqument. "nothing)