I wrote a model method that takes a list as a parameter, like so:
def printList(self, l=[]):
retstr = ''
if len(l) > 0 and self.title in l:
retstr += str(l) + "Can't do it!"
else:
l.append(self.title)
retstr += "List so far: " + str(l)
return retstr
This method is called once per request, and within the method, the
list always has the model's id (title, in this case) appended to it,
unless it already exists. For some reason, between requests, the items
added into the list remain, even though it's a local variable. That
is, calling this method from a view on a particular model once will
execute the "List so far" block, whereas refreshing it will execute
the "Can't do it!" block, since it remembered that the title was added
into the list on the previous call. Jumping to other pages will add
those titles into the list as well.
How is it that the method's local variables are being remembered? My
problem is solved by clearing the list at the end of the method, but
I'd like to know why it acts like this is the first place.
Thanks!
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