[Pyparsing] Why are ignore settings not applied in Combine statement ?

[Samuel L. <sa...@ho...>]

Hi,

I have problems with setting ignores for a grammar.
The following is a very simplified program to explain my problem.

First I had a simple program like a)

a)
from pyparsing import Literal
grammar =3D Literal("A") + Literal("B") + Literal("C")

grammar.ignore(",")

grammar.parseString("A,,,,,B,,C")

It just worked perfectly. Commas where simply ignored (as defined)


Later on I adapted my program to use the Combine command, which in my under=
standing should just have an effect on how the parser results are represent=
ed...

b)
from pyparsing import Literal, Combine
grammar =3D Combine(Literal("A") + Literal("B") + Literal("C"))

grammar.ignore(",")

grammar.parseString("A,,,,,B,,C")

...but I suddently got a ParseException:
pyparsing.ParseException: Expected "B" (at char 1), (line:1, col:2)

It seems that the commas are not anymore ignored in the Combine statement!
Can anyone tell me why, or how to have the parser apply ignore rules also i=
n the Combine command ?

Sam



_________________________________________________________________
Jetzt 30 Gratis-Emoticons f=FCr Windows Live Messenger downloaden!
http://www.livemessenger-emoticons.com/de-at=