<[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Hi,
>
> I have a file that contains a "tcl" list stored as a string. The list
> members are
> sql commands ex:
> { begin { select * from foo
> where baz='whatever'}
> {select * from gooble } end
> { insert into bar values('Tom', 25) } }
>
> I would like to parse the tcl list into a python list...
>
> Any suggestions ( I am running Tkinter...)
>
> Jerry
>
This is very similar to the Python list parser that comes with pyparsing.
Adapted to your syntax, this looks something like:
tcl = """sql commands ex:
{ begin { select * from foo
where baz='whatever'}
{select * from gooble } end
{ insert into bar values('Tom', 25) } }"""
from pyparsing import *
tcllist = Forward()
element = quotedString | Word(alphas,alphanums+"_") | \
Combine(Word(nums) + "." + Optional(Word(nums)) ) | Word(nums) | \
oneOf( list(r"(),[EMAIL PROTECTED]&*-|\?/><;:") ) | Group( '{' +
tcllist
+ '}' )
tcllist << OneOrMore( element )
import pprint
pprint.pprint( tcllist.parseString(tcl).asList() )
Giving:
['sql',
'commands',
'ex',
':',
['{',
'begin',
['{', 'select', '*', 'from', 'foo', 'where', 'baz', '=', "'whatever'",
'}'],
['{', 'select', '*', 'from', 'gooble', '}'],
'end',
['{', 'insert', 'into', 'bar', 'values', '(', "'Tom'", ',', '25', ')',
'}'],
'}']]
The pyparsing home page is at pyparsing.wikispaces.com.
-- Paul
--
http://mail.python.org/mailman/listinfo/python-list
