[Tutor] Filtering text files

[Alan Gauld]

HI,

Can you choose a new subject for messages about a new 
subject please? It gets very confusing to find a 
completely different topic inside a message from 
another thread, not to mention hard to find it in 
the future from the archives. Thanks.

> C=Tkinter.Radiobutton(text="Change dir to C:", value=0).pack()
> D=Tkinter.Radiobutton(text="Change dir to D:", value=0).pack()
> E=Tkinter.Radiobutton(text="Change dir to E:", value=0).pack()
> F=Tkinter.Radiobutton(text="Change dir to F:", value=0).pack()
> G=Tkinter.Radiobutton(text="Change dir to G:", value=0).pack()

First problem is pack returns zero so all your variables store 
zero not the widgets! You must do it in 2 stages:

C=Tkinter.Radiobutton(text="Change dir to C:", value=0)
C.pack()

> if C.select():
>     C=Tkinter.Radiobutton(text="Change dir to C:",
>                           value=1,command=os.chdir('C:\\').pack()

This creates a new button. You only want to change the value I think.
Something like

      C['value'] = 1

should be all you need

Also the command will call the os.system finction which returns 
zero and that will be stored, not much use. You need to pass a 
function object as the value of command, and do it where you 
define the object.

I'd try something like:

def cdToC(): os.chdir('C:/')
def cdToD(): os.chdir('D:/')
etc
C=Tkinter.Radiobutton(text="Go to C:", value=0, command=cdToC)

or use lambda expressions like so:

C=Tkinter.Radiobutton(text="Go to C:", 
                      value=0, command=lambda : os.chdir('C:/'))

HTH
Alan G
Author of the Learn to Program web tutor
http://www.freenetpages.co.uk/hp/alan.gauld