Simple Tkinter problem
Hi all, I'm trying to write a GUI that will put up multiple widgets in succession. My problem is that each widget also contains the previous widgets when they pop up. How do I reinitialize the widget each time so that it doesn't contain earlier ones? Actually, another question I have is, is there a way to set python so that it will assume any undefined variable is 0 or ''? That is, I have several statements like If k 0 then so and so and I would like it to assume k=0 unless I tell it otherwise. I've just been defining k=0 at the start of the program but it seems there should be a better way. Greg -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple Tkinter problem
On 2006-11-07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I'm trying to write a GUI that will put up multiple widgets in succession. My problem is that each widget also contains the previous widgets when they pop up. How do I reinitialize the widget each time so that it doesn't contain earlier ones? Show your code. Actually, another question I have is, is there a way to set python so that it will assume any undefined variable is 0 or ''? That is, I have several statements like If k 0 then so and so and I would like it to assume k=0 unless I tell it otherwise. I've just been defining k=0 at the start of the program but it seems there should be a better way. The best way to do it is to never use undefined names. -- Neil Cerutti If only faces could talk. --Pat Summerall -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple Tkinter problem
Here's my Tkinter class: class TwoChoice: def __init__(self, master): frame = Frame(master) frame.pack() m = Label(root, text= maentry) m.pack() n = Label(root, text= fave) n.pack() self.button = Button(frame, text=home_team, command= self.comm_1) self.button.pack(side=LEFT) self.hi_there = Button(frame, text=vis_team, command=self.comm_2) self.hi_there.pack(side=LEFT) def comm_1(self): print home_team root.quit() def comm_2(self): print vis_team root.quit() I call it by root = Tk() gui= TwoChoice(root) root.mainloop() The next time I call it I want to just run the same thing but with different values for the variables. Instead it gives me like two copies of the widget. Greg Neil Cerutti wrote: On 2006-11-07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I'm trying to write a GUI that will put up multiple widgets in succession. My problem is that each widget also contains the previous widgets when they pop up. How do I reinitialize the widget each time so that it doesn't contain earlier ones? Show your code. Actually, another question I have is, is there a way to set python so that it will assume any undefined variable is 0 or ''? That is, I have several statements like If k 0 then so and so and I would like it to assume k=0 unless I tell it otherwise. I've just been defining k=0 at the start of the program but it seems there should be a better way. The best way to do it is to never use undefined names. -- Neil Cerutti If only faces could talk. --Pat Summerall -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple Tkinter problem
Greg, Run the following code to see how pack_forget() or grid_forget() works, it makes previous widgets disappear but not go away. If you call grid() or pack() again after using grid_forget() the widget returns. root = Tk() class Ktest: def __init__(self): self.Ftest1() def Ftest1(self): try: self.test2.grid_forget() except AttributeError : pass self.test1 = Button(root, text='Push #1 button', bg = 'yellow', width = 25, command = self.Ftest2, height = 25) self.test1.grid(row=0, column=0) def Ftest2(self): self.test1.grid_forget() self.test2 = Button(root, text='Push #2 button', bg = 'green', width = 15, command = self.Ftest1, height = 10) self.test2.grid(row=0, column=0) if __name__== '__main__' : Ktest() mainloop() Maybe someone else has an idea about not defining a variable. My question is how does a budket of wires and screws know its a bucket of wires and screws unless someone tells it that it's a bucket of wires and screws? On Tuesday 07 November 2006 09:35, [EMAIL PROTECTED] wrote: Hi all, I'm trying to write a GUI that will put up multiple widgets in succession. My problem is that each widget also contains the previous widgets when they pop up. How do I reinitialize the widget each time so that it doesn't contain earlier ones? Actually, another question I have is, is there a way to set python so that it will assume any undefined variable is 0 or ''? That is, I have several statements like If k 0 then so and so and I would like it to assume k=0 unless I tell it otherwise. I've just been defining k=0 at the start of the program but it seems there should be a better way. Greg -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple Tkinter problem
On Tuesday 07 November 2006 10:38, jim-on-linux wrote: Greg, Run the following code to see how pack_forget() or grid_forget() works, it makes previous widgets disappear but not go away. If you call grid() or pack() again after using grid_forget() the widget returns. root = Tk() class Ktest: def __init__(self): self.Ftest1() def Ftest1(self): try: self.test2.grid_forget() except AttributeError : pass self.test1 = Button(root, text='Push #1 button', bg = 'yellow', width = 25, command = self.Ftest2, height = 25) self.test1.grid(row=0, column=0) def Ftest2(self): self.test1.grid_forget() self.test2 = Button(root, text='Push #2 button', bg = 'green', width = 15, command = self.Ftest1, height = 10) self.test2.grid(row=0, column=0) if __name__== '__main__' : Ktest() mainloop() Maybe someone else has an idea about not defining a variable. My question is how does a budket of wires and screws know its a bucket of wires and screws unless someone tells it that it's a bucket of wires and screws? jim-on-linux http://.www.inqvista.com On Tuesday 07 November 2006 09:35, [EMAIL PROTECTED] wrote: Hi all, I'm trying to write a GUI that will put up multiple widgets in succession. My problem is that each widget also contains the previous widgets when they pop up. How do I reinitialize the widget each time so that it doesn't contain earlier ones? Actually, another question I have is, is there a way to set python so that it will assume any undefined variable is 0 or ''? That is, I have several statements like If k 0 then so and so and I would like it to assume k=0 unless I tell it otherwise. I've just been defining k=0 at the start of the program but it seems there should be a better way. Greg -- http://mail.python.org/mailman/listinfo/python-list
