On Wednesday 02 March 2005 11:28 pm, Tian wrote:
I am writing an audio game using Python. in this game you can apply
some sound effects for the clips you have recorded. I want to make this
function extensible. I want user to be able to add new sound effect
plug-ins in the future.
I want the plug-in to be a simple python code (text file) and a
description file. I will set some rules for plug-in writing (like you
must inherit some class and implement some method). I hope plugin can
be added while original program is running. Is there any good method to
read in python code and test availability and invoke the functions
inside?
It's not hard to scrape the contents of a directory and import any modules
you find (i.e. to implement a "plugin directory"). I do it here (beware line-wrap):
http://cvs.sourceforge.net/viewcvs.p....1&view=markup
You might not want to have the reading code in the same directory as the
plugins -- you don't have to do it that way. Take a look at the __import__()
built-in in the Python Library Reference for more information.
I'm sure it's possible to run this code periodically at runtime, although I
prefer to do it only at startup (what if one of the plugins is faulty and
crashes the program?).
Cheers,
Terry
--
--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks
http://www.anansispaceworks.com