On Sun, Jun 26, 2011 at 11:58 PM, Marc Aymerich <glicer...@gmail.com> wrote: > Hi, > I'm trying to define a function that has an optional parameter which > should be an empty list whenever it isn't given. However, it takes as > value the same value as the last time the function was executed. What > is the reason of this behaviour? How does python deal with default > values (i.e. when are they assigned/created)?
This has been discussed before in this list, quite a few times http://mail.python.org/pipermail/python-list/2010-March/1239044.html A solution is to accept default value as None assign to [] by checking for None inside the function def f(a=None): if a is None: a = [] -- Regards Shashank Singh http://rationalpie.wordpress.com -- http://mail.python.org/mailman/listinfo/python-list
