Morning Peter, Thanks, that was something I was unaware of! Not sure how I hadn't bumped into that before!
Cheers, Wesley. On 3 August 2010 11:40, Peter Otten <__pete...@web.de> wrote: > Wesley Brooks wrote: > >> I'm having real difficulty understanding why the following is not >> working and hoped I've either missed something obvious of I'm doing >> something wrong! >> >> class A: >> def break_down(self, value, base, broken_list=[]): > >> I'm a little stumped as I don't think I'm using any global or class >> variables? Any help would be much appreciated. > > You are on the right track, the default value for broken_list is > evaluated only once; Modifications during an invocation of the > break_down() method are visible when break_down() is called again later. > > See also > > http://docs.python.org/faq/design.html#why-are-default-values-shared-between-objects > > Peter > > > _______________________________________________ > Tutor maillist - tu...@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
