Converting Numbers to Words Python

Hello there, Here is a python code to convert what ever number you enter into words. First it will take a input. It wont ask with any message. Then it give back the number in words form. Here is no any code to handle unexpected user input. This program works for once to Hundred Billion.
Sample input:-
104382426112
Expected Output:-
One Hundred Four Billion Three Hundred Eighty Two Million Four Hundred Twenty Six Thousand One Hundred Twelve

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125

one = ['', 'One', 'Two', 'Three', 'Four', 'Five', 'Six', 'Seven', 'Eight', 'Nine'] tenp = ['Ten', 'Eleven', 'Twelve', 'Thirteen', 'Fourteen', 'Fifteen', 'Sixteen', 'Seventeen', 'Eighteen', 'Nineteen'] tenp2 = ['', '', 'Twenty', 'Thirty', 'Forty', 'Fifty', 'Sixty', 'Seventy', 'Eighty', 'Ninety'] def once(num): word = '' word = one[int(num)] word = word.strip() return word def ten(num): word = '' if num[0] == '1': word = tenp[int(num[1])] else: text = once(num[1]) word = tenp2[int(num[0])] word = word + " " + text word = word.strip() return word def hundred(num): word = '' text = ten(num[1:]) word = one[int(num[0])] if num[0] != '0': word = word + " Hundred " word = word + text word = word.strip() return word def thousand(num): word = '' pref = '' text = '' length = len(num) if length == 6: text = hundred(num[3:]) pref = hundred(num[:3]) if length == 5: text = hundred(num[2:]) pref = ten(num[:2]) if length == 4: text = hundred(num[1:]) word = one[int(num[0])] if num[0] != '0' or num[1] != '0' or num[2] != '0': word = word + " Thousand " word = word + text if length == 6 or length == 5: word = pref + word word = word.strip() return word def million(num): word = '' pref = '' text = '' length = len(num) if length == 9: text = thousand(num[3:]) pref = hundred(num[:3]) if length == 8: text = thousand(num[2:]) pref = ten(num[:2]) if length == 7: text = thousand(num[1:]) word = one[int(num[0])] if num[0] != '0' or num[1] != '0' or num[2] != '0' : word = word + " Million " word = word + text if length == 9 or length == 8: word = pref + word word = word.strip() return word def billion(num): word = '' pref = '' text = '' length = len(num) if length == 12: text = million(num[3:]) pref = hundred(num[:3]) if length == 11: text = million(num[2:]) pref = ten(num[:2]) if length == 10: text = million(num[1:]) word = one[int(num[0])] if num[0] != '0': word = word + " Billion " word = word + text if length == 12 or length == 11: word = pref + word word = word.strip() return word # 104382426112 One Hundred Four Billion Three Hundred Eighty Two Million Four Hundred Twenty Six Thousand One HUndred Twelve test = int(input()) a = str(test) leng = len(a) if leng == 1: if a == '0': num = 'Zero' else: num = once(a) if leng == 2: num = ten(a) if leng == 3: num = hundred(a) if leng > 3 and leng < 7: num = thousand(a) if leng > 6 and leng < 10: num = million(a) if leng > 9 and leng < 13: num = billion(a) print(num)

If you found it useful or if you are in need of it you can use it for any purpose. You can it extend to use for Trillion and so on.....