[Tutor] Can I use def without ( ) at the end?

[Brian van den Broek]

Nathan Pinno said unto the world upon 09/07/2005 20:36:

<top post corrected>

>  ----- Original Message -----  From: "Brian van den Broek" 
> 
>  > Nathan Pinno said unto the world upon 09/07/2005 19:03:
>  >> Hi all,
>  >>
>  >> Is the subject possible without getting an error?
>  >>
>  >> Nathan Pinno
>  >> Crew, McDonalds Restaurant, Camrose, AB Canada
>  >> http://www.npinnowebsite.ca/
>  >
>  > No. Why do you want to do this? If it is to have a function with no
>  > arguments:
>  >
>  > >>> def no_args():
>  > ... print "I've no arguments"
>  > ...
>  > >>> no_args()
>  > I've no arguments
>  > >>>
>  >
>  > Brian vdB
> 
> 
> 
>   Also, I just wanted to know because I'm using it in my Giant Computer 
>  program for the menus, so I don't have to keep re-typing them.
>  
>   Nathan Pinno


Nathan,

I'm afraid I don't know what you meant in your other post by "get a 
def". I'm also unclear on what it is you feel that you are having to 
retype.

The usual way to have some functions and 'drive' them through a text 
menu is either a dictionary dispatch (don't worry about that right 
now) or something simpler like:


 >>> def function_1():
... 	print "I am function 1!"
... 	
 >>> def function_2():
... 	print "I am function 2!"
... 	
 >>> def menu():
...     print "I'm a simple menu system."
... 	print "Enter 1 for function 1"
... 	print "Enter 2 for function 2"
... 	choice = raw_input("Your selection please?\n")
... 	if choice == '1':
... 		function_1()
... 	elif choice == '2':
... 		function_2()
... 	else:
... 		print "Please read more carefully"

Try that at the prompt, and then call the menu function -- on a line, 
type:

menu()

If that isn't helping, you are going to have to explain more clearly 
what problem it is that you are trying to avoid.

Brian vdB