Peter Otten wrote:
Helmut Jarausch wrote:
I have a module which gets imported at several different places
not all of which are under my control.
How can I achieve that all/some statements within that module
get executed only at the very first import?
What you describe is Python's default behaviour. A module is executed once
and then cached in sys.modules. The second import is then just a cache
lookup.
This may only fail if a module is imported under different names, typically
when you have directory in sys.path that is part of a package, or when you
import the main script.
Peter
Thanks Steven, thanks Peter.
Then it's a problem with a problem with a webserver written in Python
(Karrigell-3.0)
and probably related to multi-threading (the statements in my module get
definitely
executed more than once).
Thanks for your help,
Helmut.
--
Helmut Jarausch
Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany
--
http://mail.python.org/mailman/listinfo/python-list
