wx_blog_demo.py

import wx

#import the newly created GUI file
import gui

#importing * : to enable writing sin(13) instead of math.sin(13)
from math import *

#inherit from the MainFrame created in wxFowmBuilder and create CalcFrame
class CalcFrame(gui.MainFrame):
    #constructor
    def __init__(self,parent):
        #initialize parent class
        gui.MainFrame.__init__(self,parent)

    #what to when 'Solve' is clicked
    #wx calls this function with and 'event' object
    def solveFunc(self,event):

        #evaluate the string in 'text' and put the answer back
        ans = eval(self.text.GetLabel())
        self.text.SetLabel (str(ans))
        print str(ans)
    #put a blank string in text when 'Clear' is clicked
    def clearFunc(self,event):
        self.text.SetLabel("")

#mandatory in wx, create an app, False stands for not deteriction stdin/stdout
#refer manual for details
app = wx.App(False)

#create an object of CalcFrame
frame = CalcFrame(None)
#show the frame
frame.Show(True)
#start the applications
app.MainLoop()