On 2008-07-03, at 19:54, Cameron Laird wrote:
On Thu, Jul 03, 2008 at 07:42:17PM -0600, Bob Greschke wrote:
.
.
.
#! /usr/bin/env python
def doSomething():
return
def doSomethingElse():
return
def canWeDoSomethingPopup():
if 'doSomething() exists':
Add-doSomething-call-to-the-popup()
if 'doSomethingElse() exists':
Add-doSomethingElse()-call-to-the-popup()
return
mainloop()
What's the right way to find out if the function doSomething() is in
this program? I want to make up popup context menus (and menubar
menus too, I guess) based on what functions are available in a given
program. doSomething() may be in one program, but not in another,
and
I'd like the list of menu items to handle that automatically.
Should I use getargspec() from the inspect module and look for the
NameError exception, or just use something like "if doSomething:",
or ?
.
.
.
This is more a question about Python than Tkinter.
While we might do well to move further discussion
to comp.lang.tcl (or its mailing-list equivalent),
I can provide the highlights here:
if "doSomething" in globals():
...
or
import types
if "doSomething" in globals() and type(doSomething) ==
types.FunctionType:
...
or
import types
if "doSomething" in globals() and \
type(globals()["doSomething"]) == types.FunctionType:
...
or ...
Oh yeah, you're right. Oops. I just wasn't thinking. I'm trying to
make menus that call functions that bring up toplevel frames. Does
that count? ;) globals()! I forgot all about that.
Thanks!
Bob
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