oop in python

[novice]

hello over there!
I have the following question:
Suppose I created a class:   class Point:
  pass
then instanciated an instance:  new = Point()
So now how to get the instance new as a string: like ' new '   ; Is
there any built in function or method
 for eg:

class Point:
   def _func_that_we_want_(self):
  return ...
new._func_that_we_want_()  --->  ' new '

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Parallel port programming on windows XP/2000?

[Novice Experl]

I'd like to write a simple application that interfaces with the parallel port, 
and changes the data on it according to keyboard input. I hope I can get it to 
run under windows xp and / or windows 2000.

How can I do this? What do I need to know? It doesn't look like the standard 
library (the one under my pillow) has that feature. In addition, I've heard 
that with newer versions of windows don't let you communicate with the port 
directly, instead requiring interfacing with some driver?

I came across this:
http://pyserial.sourceforge.net/pyparallel.html
but it seems to only be used for direct access (would it work with XP?), and 
hasn't been updated for a couple of years. In addition, it requires something 
called  "Java Communications" (JavaComm) extension for Java/Jython, doesn't 
provide a link to it, and when I google it - google returns the page I came 
from!

To add to the confusion, I hope I can provide a py2exe executable of my script 
instead of forcing a complete installation.


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Re: Parallel port programming on windows XP / 2000

[Novice Experl]

I'm still stuck... my script is finished and works just fine on win98 using 
pyparallel, but I still haven't seen any sample code to do access the port in 
XP / 2000.

If I don't make progress soon, I'll need to find a solution in another 
language, which I don't really want to do.


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Indexed variables

[python-novice]

Hello,

being an almost complete Python AND programming neophyte I would like to ask
the following - very elementary, as I might suspect - question:

How do I do the following flawed things right:

 
a1=a2=0

def f(x):
if x == a1:
a1 = a1 + 1
elif x == a2:
a2 = a2 + 1


Now if I call f with f(a2) only a1, of course, is incremented because the
if-clause does only check for the value of the input and the values of a1
and a2 are identical.

So how do I define the function such as to discrimate wheter I call it by 
f(a1) or f(a2) ?

Thank you very much,


Peter

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