anything wrong with using pyparsing

i've written this to parse my own .dotf file:

def parseFromDOTF(file_path):
    comment = "%" + restOfLine
    typeToken = CaselessKeyword("@TYPE")
    attrToken = CaselessKeywo开发者_运维百科rd('@ATTRIBUTE')
    ident = Word(alphas,alphanums)
    type = Suppress(typeToken) + ident
    columnList = Group(delimitedList(nums))
    attribute = Group(Suppress(attrToken) + ident("attribute") + columnList("column"))
    DOTF = type('type') + OneOrMore(attribute)("attributes")
    DOTF.ignore(comment)
    return DOTF.parseFile(file_path)

below is a sample of .dotf file

%a comment  
@TYPE NORMAL
@ATTRIBUTE id 0
@ATTRIBUTE values 1,2,3,4
@ATTRIBUTE class 5

but there is something wrong with it:

pyparsing.ParseException: Expected "0123456789" (at char 79), (line:3, col:15)

the 15th col of line 3 is a whitespace, isn't it?

so ,what's wrong?

thanks!

nums equals the string '0123456789'. So the definition

columnList = Group(delimitedList(nums))

tells pyparsing that a columnList should be a comma-delimited list of strings, with each string literally being '0123456789'.

To instead match a comma-delimited list of "words" composed of characters from the string nums, use Word(nums):

integer = Word(nums)
columnList = Group(delimitedList(integer))