Other access for information variables (except 'who')

[ผศ.ดร.ศุภชัย วรพจน์พิศุทธิ์]

I am writing an IDE for my octave classroom using python. I use two
threads with stdin pipe and stdout/stderr pipe for sending commands to
'octave -i' and receiving result or error back respectively.  The result
is processed by simple regular expression in order to remove command
prompt 'octave X:>'.

But I still can't find the way to access the information of local
variables.  The 'who -variables -long' is not appropriate to the concept
pipe.readline() I used. Any recommendation is welcome.

Thanks in advance
Supachai

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import threading,Queue,os,string,re


class ReadingPipe(threading.Thread):
    def __init__(self, pipe, **kwds):
        threading.Thread.__init__(self, **kwds)
        self.inpipe = pipe
        self.re = re.compile(r'octave:.> ')
        self.running = True
        self.start()

    def close(self):
        self.running = False

    def run(self):
        while self.running:
            ans = self.inpipe.readline()
            if ans != '\n':
                print ''.join(self.re.split(ans))
        self.inpipe.close()


class WritingPipe(threading.Thread):
    def __init__(self, pipe, **kwds):
        threading.Thread.__init__(self, **kwds)
        self.queue = Queue.Queue()
        self.outpipe = pipe
        self.running = True
        self.start()

    def request(self,cmd):
        self.queue.put(cmd)

    def close(self):
        self.running = False

    def run(self):
        while self.running:
            cmd = self.queue.get()
            self.outpipe.write(cmd)
            self.outpipe.flush()
        self.outpipe.close()


class OctaveCmd:
    def __init__(self):
        [pw,pr] = os.popen4('octave -i -q')
        r = ReadingPipe(pr)
        w = WritingPipe(pw)
        self.r = r
        self.w = w

    def do(self,cmd):
        self.w.request(cmd)

    def close(self):
        self.w.close()
        self.r.close()




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