It works now, Thank you a lot!
2014-03-11 23:31 GMT-03:00 Murphy McCauley <murphy.mccau...@gmail.com>: > This seems to just be a basic Python programming problem. The "mem = []" > line creates a new list. Then you are adding one element to it. Then > you're throwing it away. The next time the code executes (apparently in a > PacketIn handler), it creates a new list, adds an item, and throws it away > again. > > You need to save the list somewhere by having a reference to it in a > non-local scope. If your PacketIn handler is a method on an object, maybe > the object would be the right place. Generally, you'd initialize it in the > class's __init__() method, by setting self.mem = [], and then referencing > it later (in the PacketIn handler) using self.mem.append() for example. > > Good luck. > > -- Murphy > > On Mar 11, 2014, at 2:23 PM, Marcus Sandri <mww...@gmail.com> wrote: > > > Hello All, > > > > > > Problem in storing values in data-structures > > > > > > Hello All, > > > > > > I'm trying to store values into data structures, specifically lists. > I've tried to use Append() method to append new values in my list as > always. But as far as I know, when I run the controller, it just store > values one time. > > > > An example: > > > > packet = event.parsed > > mem = [ ] > > mem.append(packet) > > > > print "\nMEM:\n" > > for item in mem: > > print "\n Length of list:", len(memoize) > > > > > > It will return: Length of list: 1 all time. > > > > > > Am I doing something wrong? > > > > > > Cheers, > > Marcus. > >
