should i not use self. in Clean() and Calculate() either?
anyway i had changed it before. must have copied the wrong program.
#! /usr/bin/env python
from Tkinter import *
import tkMessageBox
class GUIFramework(Frame):
"""This is the GUI"""
def __init__(self, master=None):
"""Initialize yourself"""
self.expr = ""
"""Initialise the base class"""
Frame.__init__(self,master)
"""Set the Window Title"""
self.master.title("Calculator")
"""Display the main window"
with a little bit of padding"""
self.grid(padx=10,pady=10)
self.CreateWidgets()
def CreateWidgets(self):
"""Create the Button, set the text and the
command that will be called when the button is clicked"""
btnDisplay = Button(self, text="calculate!",
command=self.Calculate)
btnDisplay.grid(row=0, column=31)
## """Create the Button, set the text and the
## command that will be called when the button is clicked"""
## self.lbText = Label(self, text="Results:")
## self.lbText.grid(row=1, column=0)
btnDisplay = Button(self,text='1',command=lambda
n="1":self.Display(n),width=2,height=2)
btnDisplay.grid(row=3, column=0)
btnDisplay = Button(self,text='2',command=lambda
n="2":self.Display(n),width=2,height=2)
btnDisplay.grid(row=3, column=1)
btnDisplay = Button(self,text='3',command=lambda
n="3":self.Display(n),width=2,height=2)
btnDisplay.grid(row=3, column=2)
btnDisplay = Button(self,text='+',command=lambda
n="+":self.Display(n),width=2,height=2)
btnDisplay.grid(row=3, column=3)
btnDisplay = Button(self,text='4',command=lambda
n="4":self.Display(n),width=2,height=2)
btnDisplay.grid(row=4, column=0)
btnDisplay = Button(self,text='5',command=lambda
n="5":self.Display(n),width=2,height=2)
btnDisplay.grid(row=4, column=1)
btnDisplay = Button(self,text='6',command=lambda
n="6":self.Display(n),width=2,height=2)
btnDisplay.grid(row=4, column=2)
btnDisplay = Button(self,text='-',command=lambda
n="-":self.Display(n),width=2,height=2)
btnDisplay.grid(row=4, column=3)
btnDisplay = Button(self,text='7',command=lambda
n="7":self.Display(n),width=2,height=2)
btnDisplay.grid(row=5, column=0)
btnDisplay = Button(self,text='8',command=lambda
n="8":self.Display(n),width=2,height=2)
btnDisplay.grid(row=5, column=1)
btnDisplay = Button(self,text='9',command=lambda
n="9":self.Display(n),width=2,height=2)
btnDisplay.grid(row=5, column=2)
btnDisplay = Button(self,text='*',command=lambda
n="*":self.Display(n),width=2,height=2)
btnDisplay.grid(row=5, column=3)
btnDisplay = Button(self,text='0',command=lambda
n="0":self.Display(n),width=2,height=2)
btnDisplay.grid(row=6, column=0)
btnDisplay =
Button(self,text='C',command=self.Clean,width=2,height=2)
btnDisplay.grid(row=6, column=1)
btnDisplay = Button(self,text='^.5',command=lambda n="**.
5":self.Display(n),width=2,height=2)
btnDisplay.grid(row=6, column=2)
btnDisplay = Button(self,text='/',command=lambda
n="/":self.Display(n),width=2,height=2)
btnDisplay.grid(row=6, column=3)
def Display(self, number):
self.expr = self.expr + number
self.lbText = Label(self, text=self.expr)
self.lbText.grid(row=0, column=0)
def Calculate(self):
self.expr = str(eval(self.expr))#try catch tex 3+6+
result = self.expr
self.Clean()
self.lbText = Label(self, text=result)
self.lbText.grid(row=0, column=0)
self.expr = ""
def Clean(self):
self.expr = " "
self.lbText.config(text=self.expr)
self.lbText = Label(self, text=self.expr)
self.lbText.grid(row=0, column=0)
self.expr = ""
self.lbText.config(text=self.expr)
self.lbText = Label(self, text=self.expr)
self.lbText.grid(row=0, column=0)
if __name__ == "__main__":
guiFrame = GUIFramework()
guiFrame.mainloop()
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