I need from this code that var1,var2,var3,var4 should be continuosly read from file(or serial port) and there value be updated continuosly.Also i wish to use these 4 variables for plotting in pygame/matplotlib/VPython .How can i do that.Moreover for every read cycle there has to be a write cycle on to a file(or serial port) and the user must be able to set this value via an entry.have not been able to figure out all this.Moreover with my code i am able to presently display updated information on a button click(where as i wanna use button just to start things of) have attached program and source file 1.txt
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#!/usr/bin/env python
#This program will attempt to read a line from a file using a GUI import pygtk pygtk.require('2.0') import gtk import re import time class Nipun: f=open('/home/nipun/1.txt') vars = re.compile('^(\d+\.?\d*)a(\d+\.?\d*)b(\d+\.?\d*)c(\d+\.?\d*)d(.*)') def __init__(self): self.window=gtk.Window(gtk.WINDOW_TOPLEVEL) self.window.set_title("File read GUI Label") self.window.connect("delete_event",self.delete_event) self.window.set_border_width(10) self.box2=gtk.VBox(False,0) self.window.add(self.box2) self.button=gtk.Button("Read") self.button.connect("clicked",self.callback) self.box2.pack_start(self.button,True,True,0) self.button.show() self.label1=gtk.Label() self.label2=gtk.Label() self.label3=gtk.Label() self.label4=gtk.Label() self.label5=gtk.Label("A") self.label6=gtk.Label("B") self.label7=gtk.Label("C") self.label8=gtk.Label("D") self.box2.pack_start(self.label5,True,True,0) self.box2.pack_start(self.label1,True,True,0) self.box2.pack_start(self.label6,True,True,0) self.box2.pack_start(self.label2,True,True,0) self.box2.pack_start(self.label7,True,True,0) self.box2.pack_start(self.label3,True,True,0) self.box2.pack_start(self.label8,True,True,0) self.box2.pack_start(self.label4,True,True,0) self.label1.show() self.label2.show() self.label3.show() self.label4.show() self.label5.show() self.label6.show() self.label7.show() self.label8.show() self.box2.show() self.window.show() def delete_event(self,widget,event,data=None): print "Delete event has occcured" gtk.main_quit() return False def callback(self,widget,data=None): print "alpha" s=hello.f.readline() m = re.search(hello.vars, s) # Run the regexp on the packet var1 = m.group(1) # take out the values var2 = m.group(2) var3 = m.group(3) var4 = m.group(4) hello.label1.set_text(var1) hello.label2.set_text(var2) hello.label3.set_text(var3) hello.label4.set_text(var4) def main(self): gtk.main() if __name__=="__main__": hello=Nipun() hello.main()
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