数字英文转换
严格意义上来讲，Excel 当然不能归为编辑器这一类工具，但是考虑到外贸从业人士会经常使用 Excel 中的表格自动计算功能，来制作产品报价单或商业发票等文件，这基本上是将 Excel 当做 Word 使用，就姑且将之归类到编辑器吧。
本文主要记录，通过 Excel 中内置的 VBA 实现从数字到英文的转换，也就是把使用数字表示的金额转化成使用英语表述的金额，主要适用于商业发票的制作。有了这个小脚本之后，就不再需要每次都是人工去将每张发票中的金额转述成英文表达了，每次可以节省大约一分钟，并且不会出错。
步骤
- 在标准的 Excel 文件内，通过快捷键
Alt + F11打开 VBA 编辑器 - 插入一个新模块，默认名称 Module1
- 将 VBA 脚本复制粘贴至 Module1
- 将标准的
Excel.xlsx文件另存为包含宏的文件格式，即以.xlsm为后缀
使用
在保存了脚本的 Excel 文件内的某个单元格使用自动转换功能时，只需简单地调用宏脚本内定义好的函数 =AmountToWords(K33, "US Dollars", "Cents") 即可，可以传入 3 个参数：
- 引用数字的位置（或者地址）
- 货币名称（比如 US Dollars，HK Dollars）
- 最小精度单位（一般就是小数点后的第二位，即「分」）
脚本
Option Explicit
' VBA Function to Convert Number to Word in Excel
Function NumToWords(ByVal MyNumber, Optional isProper As Boolean = False) As String
Dim Units As String, SubUnits As String, TempStr As String
Dim DecimalPlace As Integer, Count As Integer
Dim Place(9) As String
Place(2) = " Thousand "
Place(3) = " Million "
Place(4) = " Billion "
Place(5) = " Trillion "
' Check if the input is empty or not a number
If IsEmpty(MyNumber) Or Not IsNumeric(MyNumber) Then
NumToWords = ""
Exit Function
End If
' Convert MyNumber to string and trim white space
MyNumber = Trim(Str(MyNumber))
' Handle Zero Case
If Val(MyNumber) = 0 Then
NumToWords = "Zero"
Exit Function
End If
' Find position of decimal place (0 if none)
DecimalPlace = InStr(MyNumber, ".")
' Convert Decimal Part
If DecimalPlace > 0 Then
SubUnits = GetDecimalWords(Mid(MyNumber, DecimalPlace + 1), isProper)
MyNumber = Trim(Left(MyNumber, DecimalPlace - 1))
End If
' Process Integer Part
Count = 1
Do While MyNumber <> ""
TempStr = GetHundreds(Right(MyNumber, 3))
If TempStr <> "" Then Units = TempStr & Place(Count) & Units
If Len(MyNumber) > 3 Then
MyNumber = Left(MyNumber, Len(MyNumber) - 3)
Else
MyNumber = ""
End If
Count = Count + 1
Loop
' Combine Integer and Decimal Parts
If SubUnits = "" Then
NumToWords = Application.Trim(Units)
Else
NumToWords = Application.Trim(Units & " Point " & SubUnits)
End If
End Function
' Converts a number from 100-999 into text
Function GetHundreds(ByVal MyNumber)
Dim Result As String
If Val(MyNumber) = 0 Then Exit Function
MyNumber = Right("000" & MyNumber, 3)
' Convert Hundreds Place
If Mid(MyNumber, 1, 1) <> "0" Then
Result = GetDigit(Mid(MyNumber, 1, 1)) & " Hundred "
' Add "and" if there are tens or ones
If Mid(MyNumber, 2, 2) <> "00" Then
Result = Result & " and "
Else
Result = Result & " "
End If
End If
' Convert Tens and Ones Place
If Mid(MyNumber, 2, 1) <> "0" Then
Result = Result & GetTens(Mid(MyNumber, 2))
Else
Result = Result & GetDigit(Mid(MyNumber, 3))
End If
GetHundreds = Result
End Function
' Converts a number from 10 to 99 into text
Function GetTens(TensText)
Dim Result As String
Result = ""
If Val(Left(TensText, 1)) = 1 Then ' If value between 10-19...
Select Case Val(TensText)
Case 10: Result = "Ten"
Case 11: Result = "Eleven"
Case 12: Result = "Twelve"
Case 13: Result = "Thirteen"
Case 14: Result = "Fourteen"
Case 15: Result = "Fifteen"
Case 16: Result = "Sixteen"
Case 17: Result = "Seventeen"
Case 18: Result = "Eighteen"
Case 19: Result = "Nineteen"
End Select
Else ' If value between 20-99...
Select Case Val(Left(TensText, 1))
Case 2: Result = "Twenty"
Case 3: Result = "Thirty"
Case 4: Result = "Forty"
Case 5: Result = "Fifty"
Case 6: Result = "Sixty"
Case 7: Result = "Seventy"
Case 8: Result = "Eighty"
Case 9: Result = "Ninety"
End Select
' Add hyphen between tens and ones
If Right(TensText, 1) <> "0" Then
Result = Result & "-" & GetDigit(Right(TensText, 1))
End If
End If
GetTens = Result
End Function
' Converts a number from 1 to 9 into text
Function GetDigit(Digit)
Select Case Val(Digit)
Case 1: GetDigit = "One"
Case 2: GetDigit = "Two"
Case 3: GetDigit = "Three"
Case 4: GetDigit = "Four"
Case 5: GetDigit = "Five"
Case 6: GetDigit = "Six"
Case 7: GetDigit = "Seven"
Case 8: GetDigit = "Eight"
Case 9: GetDigit = "Nine"
Case Else: GetDigit = ""
End Select
End Function
' Converts Decimal Digits to Words
Function GetDecimalWords(DecimalPart As String, isProper As Boolean) As String
Dim i As Integer, DecWord As String
If isProper Then
' Proper: 25.57 ? "Twenty Five Point Five Seven"
For i = 1 To Len(DecimalPart)
If i > 1 Then DecWord = DecWord & " "
DecWord = DecWord & GetDigit(Mid(DecimalPart, i, 1))
Next i
Else
' Default: 25.57 ? "Twenty Five Point Fifty Seven"
DecWord = GetTens(Left(DecimalPart & "00", 2))
End If
GetDecimalWords = DecWord
End Function
Function AmountToWords(ByVal MyNumber, ByVal strCurrency As String, ByVal strUnits As String) As String
Dim IntegerPart As String, DecimalPart As String
Dim DecimalPlace As Integer
' Check if the input is empty or not a number
If IsEmpty(MyNumber) Or Not IsNumeric(MyNumber) Then
AmountToWords = ""
Exit Function
End If
' Convert MyNumber to string and trim white space
MyNumber = Trim(Str(MyNumber))
' Find position of decimal place (0 if none)
DecimalPlace = InStr(MyNumber, ".")
' Get Integer and Decimal Parts
If DecimalPlace > 0 Then
IntegerPart = Trim(Left(MyNumber, DecimalPlace - 1))
DecimalPart = Right(MyNumber, Len(MyNumber) - DecimalPlace)
Else
IntegerPart = MyNumber
DecimalPart = ""
End If
' Initialize with "Total Say "
AmountToWords = "Total Say "
' Convert Integer Part to words if not empty or zero
If IntegerPart <> "" And Val(IntegerPart) > 0 Then
AmountToWords = AmountToWords & NumToWords(IntegerPart) & " " & strCurrency
End If
' Convert Decimal Part to words if not empty or zero
If DecimalPart <> "" And Val(DecimalPart) > 0 Then
If IntegerPart = "" Or Val(IntegerPart) = 0 Then
AmountToWords = AmountToWords & NumToWords(Left(DecimalPart & "00", 2)) & " " & strUnits
Else
AmountToWords = AmountToWords & " and " & NumToWords(Left(DecimalPart & "00", 2)) & " " & strUnits
End If
End If
End Function重构
由于 VBA 很少使用，上述实现是否可以通过 Excel + Python 重构出来？