# Python's way of translating numbers expressed in English words into Arabic numerals

Source: Internet
Author: User
Tags assert

This article describes the Python implementation of the method of translating the numerals in English words into Arabic numerals. Share to everyone for your reference. The implementation methods are as follows:

?

 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 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 5 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104-105 Import Re _known = {' zero ': 0, ' one ': 1, ' two ': 2, ' three ': 3, ' four ': 4, ' five ': 5, ' six ': 6, ' seven ': 7, ' eight ': 8 Nine ': 9, ' ten ': Ten, ' eleven ': One, ' twelve ': A, ' thirteen ': "Fourteen": "Fifteen": "Sixteen" : D, ' eighteen ': Nineteen, ' Twenty ': ' Thirty ': ' Forty ': ' Fifty ':--Sixty ': "E, ' Seventy ':" Ighty ': B, ' Ninety ':} def spoken_word_to_number (n): "" Assume n is a positive integer. Assert _positive_integer_number (' nine hundred ') = = 900 assert spoken_word_to_number (' one hundred ') = = Assert Spoken_w Ord_to_number (' eleven ') = = one assert Spoken_word_to_number (' twenty two ') = = Assert Spoken_word_to_number (' Thirty-two ') = = (' Forty two ') = = Spoken_word_to_number assert spoken_word_to_number (' two hundred thirty two ') = = 232 Assert Spoken_word_to_number (' two thirty two ') = = 232 assert spoken_word_to_number (' Nineteen Hundred Eighty Nine ') = = 1989 Assert Spoken_word_to_number (' Nineteen Eighty Nine ') = = 1989 Assert Spoken_word_to_number (' One thousand nine hundred and eighty Nine ') = = 1989 Assert Spoken_word_to_number (' nine Eig Hty ') = = 980 assert Spoken_word_to_number (' nine two ') = = wont to convert this one assert able R (' Nine thousand nine hundred ') = = 9900 Assert spoken_word_to_number (' One thousand nine hundred One ') = = 1901 "" "N = N.lo Wer (). Strip () if n in _known:return _known[n] Else:inputwordarr = Re.split (' [-] ', N) assert Len (Inputwordarr) > 1 #a ll single words are known #Check the pathological case where hundred are at the "end" or "Thousand is" at "End If inputwordarr[- 1] = = ' hundred ': Inputwordarr.append (' zero ') inputwordarr.append (' zero ') if inputwordarr[-1] = = ' thousand ': Inputwordarr.append (' zero ') inputwordarr.append (' zero ') inputwordarr.append (' zero ') if inputwordarr[0] = = ' hundred ': Inputwordarr.insert (0, ' one ') if inputwordarr[0] = = ' thousand ': Inputwordarr.insert (0, ' one ') Inputwordarr = [Word for WOR D in Inputwordarr if Word isn't in [' and ', ' mInus ', ' negative ']] currentposition = ' unit ' prevposition = None output = 0 for word in reversed (Inputwordarr): if current Position = = ' Unit ': number = _known[word] Output + = number If number > 9:currentposition = ' hundred ' Else:currentposi tion = ' Ten ' elif currentposition = = ' Ten ': If Word!= ' hundred ': Number = _known[word] If number < 10:output = Numbe R*10 Else:output + + #else: nothing special currentposition = ' hundred ' elif currentposition = ' hundred ': if Word Not in [' Hundred ', ' thousand ']: Number = _known[word] Output + = number*100 currentposition = ' thousand ' elif word = = ' tho Usand ': currentposition = ' thousand ' else:currentposition = ' hundred ' elif currentposition = ' thousand ': Assert word!= ' Hundred ' If Word!= ' thousand ': number = _known[word] Output = = number*1000 Else:assert "Can ' t be here" = None return (o Utput)

Related Keywords:
Related Article

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

## A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

• #### Sales Support

1 on 1 presale consultation

• #### After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

• Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.