Making a tiny script language using python: I need a string processing lib

[Sullivan WxPyQtKinter]

I do not know if there is any lib specially designed to process the
strings in scipt language.
for example:
I hope to process the string"print a,b,c,d,e "in the form"command
argumentlist" and return:
{'command'='pri nt',
'argumentlist'=['a','b','c','d' ,'e']}
Are there any lib to implement this?


Ideally , the lib should have a function like below:

def extract(command string, splitformat)

eg:
extract("see#yo u@tonight","wha t#whom@when")
return: {"what":"see"," whom":"you","wh en":"tonight" }

extract("1;2;3; 4;5","list[;]")
return: {"list":['1','2','3','4' ,'5']}

extract("print a,b,c,d,e","com mand arglist[,]")
return: {"command":"pri nt","arglist" :['a','b','c','d' ,'e']}

extract("fruit: apple~orgrange~ pear~grape#name :tom;sam;dim;ha m"
,"class1:instan ce1[~]#class2:instanc e2[;]")
return: {"class1":"frui t",
instance1:['apple','orange ','pear','grape '],
"class2":"name" ,
"instance2" :['tom','sam','di m','ham']
}



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[James Stroud]

Re: Making a tiny script language using python: I need a string processinglib

Sullivan WxPyQtKinter wrote:[color=blue]
> I do not know if there is any lib specially designed to process the
> strings in scipt language.
> for example:
> I hope to process the string"print a,b,c,d,e "in the form"command
> argumentlist" and return:
> {'command'='pri nt',
> 'argumentlist'=['a','b','c','d' ,'e']}
> Are there any lib to implement this?
>
>
> Ideally , the lib should have a function like below:
>
> def extract(command string, splitformat)
>
> eg:
> extract("see#yo u@tonight","wha t#whom@when")
> return: {"what":"see"," whom":"you","wh en":"tonight" }
>
> extract("1;2;3; 4;5","list[;]")
> return: {"list":['1','2','3','4' ,'5']}
>
> extract("print a,b,c,d,e","com mand arglist[,]")
> return: {"command":"pri nt","arglist" :['a','b','c','d' ,'e']}
>
> extract("fruit: apple~orgrange~ pear~grape#name :tom;sam;dim;ha m"
> ,"class1:instan ce1[~]#class2:instanc e2[;]")
> return: {"class1":"frui t",
> instance1:['apple','orange ','pear','grape '],
> "class2":"name" ,
> "instance2" :['tom','sam','di m','ham']
> }[/color]

Your best bets are simpleparse (http://simpleparse.sourceforge.net/) or
ply (http://www.dabeaz.com/ply/ply.html). Both have a little learning
curve but are well worth the time investment if you will be doing things
like you describe.

James

[Paul McGuire]

Re: Making a tiny script language using python: I need a string processing lib

"Sullivan WxPyQtKinter" <sullivanz.pku@ gmail.com> wrote in message
news:1141350818 .374837.197270@ v46g2000cwv.goo glegroups.com.. .[color=blue]
> I do not know if there is any lib specially designed to process the
> strings in scipt language.
> for example:
> I hope to process the string"print a,b,c,d,e "in the form"command
> argumentlist" and return:
> {'command'='pri nt',
> 'argumentlist'=['a','b','c','d' ,'e']}
> Are there any lib to implement this?
>
>
> Ideally , the lib should have a function like below:
>
> def extract(command string, splitformat)
>
> eg:
> extract("see#yo u@tonight","wha t#whom@when")
> return: {"what":"see"," whom":"you","wh en":"tonight" }
>
> extract("1;2;3; 4;5","list[;]")
> return: {"list":['1','2','3','4' ,'5']}
>
> extract("print a,b,c,d,e","com mand arglist[,]")
> return: {"command":"pri nt","arglist" :['a','b','c','d' ,'e']}
>
> extract("fruit: apple~orgrange~ pear~grape#name :tom;sam;dim;ha m"
> ,"class1:instan ce1[~]#class2:instanc e2[;]")
> return: {"class1":"frui t",
> instance1:['apple','orange ','pear','grape '],
> "class2":"name" ,
> "instance2" :['tom','sam','di m','ham']
> }
>
>
>
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> # # # # #
> # # # # #
> # # # # #
>[/color]
I gave two presentations at PyCon on using pyparsing, one was for a simple
adventure game that implemented a command parser. You can find the
presentations and sample code at
http://www.geocities.com/ptmcg/python/index.html.

-- Paul

[Christos Georgiou]

Re: Making a tiny script language using python: I need a string processing lib

On 2 Mar 2006 17:53:38 -0800, rumours say that "Sullivan WxPyQtKinter"
<sullivanz.pku@ gmail.com> might have written:
[color=blue]
>I do not know if there is any lib specially designed to process the
>strings in scipt language.
>for example:
>I hope to process the string"print a,b,c,d,e "in the form"command
>argumentlist " and return:
>{'command'='pr int',
>'argumentlist' =['a','b','c','d' ,'e']}[/color]

Have you checked the shlex module in the standard library? It might be
useful.
--
TZOTZIOY, I speak England very best.
"Dear Paul,
please stop spamming us."
The Corinthians

[Sullivan WxPyQtKinter]

Re: Making a tiny script language using python: I need a string processing lib

I have gone over the shlex and cmd and so, but none of them are
satisfactory. However, I tried to program this this function on my own
and found it pretty easy.

Thank you so much for the suggestion, after all.