On 2007-07-03, Paul McGuire <[EMAIL PROTECTED]> wrote:
> 2. Change the parse actions to deref the 0'th element of t for
> binop and with_.
>
> num.setParseAction(lambda t: Num(int(t.number)))
> id_.setParseAction(lambda t: Id(t.name))
> binop.setParseAction(lambda t: BinOp(t[0].op, t[0].lhs, t[0].r
By the way, the next release of pyparsing will allow you to shortcut
all of these .setResultsName calls, using this notation instead:
binop = ( LPAR +
oneOf("+ -")('op') +
wae('lhs') +
wae('rhs') + RPAR )
with_ = ( LPAR + "with" + LPAR +
id_('bound_i
On Jul 3, 11:08 am, Neil Cerutti <[EMAIL PROTECTED]> wrote:
>
> C:\WINNT\system32\cmd.exe /c python wae.py
> **
> File "wae.py", line 6, in __main__
> Failed example:
> parse('(+ 3 45)')
> Exception raised:
> Traceback (mos
On 2007-07-03, Paul McGuire <[EMAIL PROTECTED]> wrote:
> Here is my alternative solution (not using results names). I used
> the base WAE class to accept the tokens as the initialization var,
> then unpack the list into variables in each respective calc()
> method. I did not see the need for a su
Neil -
>> The above shadows 'id'; I suppose 'ident' would be better.
Doh! I found the id() shadowing later, changed my var to id_ so as
not to stray from your BNF too much.
>> How can I make it barf for testcases like '(+ 2 3))'? It doesn't
>> seem to expect an Eof.
To force parsing to the end of
On 2007-07-02, Paul McGuire <[EMAIL PROTECTED]> wrote:
> On Jul 2, 3:56 pm, Neil Cerutti <[EMAIL PROTECTED]> wrote:
> from pyparsing import *
It's always good when your messages start like that. ;)
> """
> Ok, here is the step-by-step, beginning with your posted BNF.
> (Based on your test cases,
On Jul 2, 6:28 pm, Paul McGuire <[EMAIL PROTECTED]> wrote:
> On Jul 2, 3:56 pm, Neil Cerutti <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
> > On 2007-07-02, Laurent Pointal <[EMAIL PROTECTED]> wrote:
>
> > > Neil Cerutti wrote:
> > >> How can I make the Python more idiomatic Python?
>
> > > Have you taken
On Jul 2, 3:56 pm, Neil Cerutti <[EMAIL PROTECTED]> wrote:
> On 2007-07-02, Laurent Pointal <[EMAIL PROTECTED]> wrote:
>
> > Neil Cerutti wrote:
> >> How can I make the Python more idiomatic Python?
>
> > Have you taken a look at pyparsing ?
>
> Yes, I have it. PyParsing has, well, so many convenie
On 2007-07-02, Laurent Pointal <[EMAIL PROTECTED]> wrote:
> Neil Cerutti wrote:
>> How can I make the Python more idiomatic Python?
>
> Have you taken a look at pyparsing ?
Yes, I have it. PyParsing has, well, so many convenience features
they seem to shout down whatever the core features are, and
Neil Cerutti wrote:
...
> How can I make the Python more idiomatic Python?
Have you taken a look at pyparsing ?
http://pyparsing.wikispaces.com/
--
http://mail.python.org/mailman/listinfo/python-list
10 matches
Mail list logo
