[Tkinter-discuss] Is this introspective?

[Bob Greschke]

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