"rh0dium" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Hi all, > > I am using python to drive another tool using pexpect. The values > which I get back I would like to automatically put into a list if there > is more than one return value. They provide me a way to see that the > data is in set by parenthesising it. > <snip>
Well, you asked for regex help, but a pyparsing rendition may be easier to read and maintain. -- Paul (Download pyparsing at http://pyparsing.sourceforge.net.) # test data strings test1 = """somefunction() "@(#)$CDS: icfb.exe version 5.1.0 05/22/2005 23:36 (cicln01) $" """ test2 = """somefunction() ("." "~" "/eda/ic_5.10.41.500.1.18/tools.lnx86/dfII/samples/techfile" "foo") """ test3 = """somefunctionWithNestedlist() ("." "~" "/eda/ic_5.10.41.500.1.18/tools.lnx86/dfII/samples/techfile" ("Hey!" "this is a nested" "list") "foo") """ """ So if you're still reading this I want to parse out data. Here are the rules... - Line 1 ALWAYS is the calling function whatever is there (except "\r\n") should be kept as "original" - Anything may occur inside the quotations - I don't care what's in there per se but it must be maintained. - Parenthesed items I want to be pushed into a list. I haven't run into a case where you have nested paren's but that not to say it won't happen... """ from pyparsing import Literal, Word, alphas, alphanums, \ dblQuotedString, OneOrMore, Group, Forward LPAR = Literal("(") RPAR = Literal(")") # assume function identifiers must start with alphas, followed by zero or more # alphas, numbers, or '_' - expand this defn as needed ident = Word(alphas,alphanums+"_") # define a list as one or more quoted strings, inside ()'s - we'll tackle nesting # in a minute quoteList = Group( LPAR.suppress() + OneOrMore(dblQuotedString) + RPAR.suppress() ) # define format of a line of data - don't bother with \n's or \r's, # pyparsing just skips 'em dataFormat = ident + LPAR + RPAR + ( dblQuotedString | quoteList ) def test(t): print dataFormat.parseString(t) print "Parse flat lists" test(test1) test(test2) # modifications for nested lists quoteList = Forward() quoteList << Group( LPAR.suppress() + OneOrMore(dblQuotedString | quoteList) + RPAR.suppress() ) dataFormat = ident + LPAR + RPAR + ( dblQuotedString | quoteList ) print print "Parse using nested lists" test(test1) test(test2) test(test3) Parsing results: Parse flat lists ['somefunction', '(', ')', '"@(#)$CDS: icfb.exe version 5.1.0 05/22/2005 23:36 (cicln01) $"'] ['somefunction', '(', ')', ['"."', '"~"', '"/eda/ic_5.10.41.500.1.18/tools.lnx86/dfII/samples/techfile"', '"foo"']] Parse using nested lists ['somefunction', '(', ')', '"@(#)$CDS: icfb.exe version 5.1.0 05/22/2005 23:36 (cicln01) $"'] ['somefunction', '(', ')', ['"."', '"~"', '"/eda/ic_5.10.41.500.1.18/tools.lnx86/dfII/samples/techfile"', '"foo"']] ['somefunctionWithNestedlist', '(', ')', ['"."', '"~"', '"/eda/ic_5.10.41.500.1.18/tools.lnx86/dfII/samples/techfile"', ['"Hey!"', '"this is a nested"', '"list"'], '"foo"']] -- http://mail.python.org/mailman/listinfo/python-list
