On 11/02/2011 04:54, Rotwang wrote:
Hi all
Sorry if this is a dumb question, I would guess it's answered in an FAQ
somewhere but I haven't been able to find anything that helps. I'm
trying to use Tkinter to create a menu whose entries and corresponding
commands depend on some list x. I want the menu options to be labelled
by the elements of x, and upon selecting an option k I want my program
to execute a function f(k). So I tried writing something that
schematically looked like this:
def f(k):
[do something that depends on k]
menu = Tkinter.Menu(master, tearoff = 0)
for k in x:
menu.add_command(label = str(k), command = lambda: f(k))
The trouble is, whenever I open the menu and click on any entry k,
instead of evaluating f(k) it always evaluates f(x[-1]). I've also tried
this:
menu = Tkinter.Menu(master, tearoff = 0)
for k in x:
def f():
[do something that depends on k]
menu.add_command(label = str(k), command = f)
Mmmmnngh, that obviously wasn't going to work. Here's something that
does work:
menu = Tkinter.Menu(master, tearoff = 0)
for k in x:
def f(j = k):
[do something that depends on j]
menu.add_command(label = str(k), command = f)
Still, I'd like to know if there's a more elegant method for creating a
set of functions indexed by an arbitrary list.
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