Reckoner wrote: > On Apr 17, 10:42 am, Peter Otten <__pete...@web.de> wrote: >> Reckoner wrote: >> > I have a large class that is a child of list. I need to pickle it, but >> > it's not working. For example, I have reduced it to the following: >> >> > class Mylist(list): >> > def __init__(self,x=[]): >> > list.__init__(self,x) >> >> > and I cannot even get this to pickle right. >> >> >>> w=Mylist([1,2,3]) >> >>> dumps(w) >> >> > PicklingError: Can't pickle <class '__main__.p'>: attribute lookup >> > __main__.p fa >> > iled >> >> > I'm using python 2.5 on win32. >> >> > any help appreciated. >> >> This error occurs when you try to pickle a class that cannot be found by >> its name: >> >> >>> from cPickle import dumps >> >>> class p: pass >> ... >> >>> a = p >> >>> del p >> >>> dumps(a) >> >> Traceback (most recent call last): >> File "<stdin>", line 1, in <module> >> cPickle.PicklingError: Can't pickle __main__.p: attribute lookup >> __main__.p failed >> >> I don't see how this error could be triggered by the code you give above. >> Please try it again in a fresh interpreter. >> >> Peter > > sorry. here it is: > > PicklingError: Can't pickle <class '__main__.Mylist'>: attribute > lookup __main__.Mylist failed
Please post the complete script that provoked the error. Does the error occur when you run it from the command line? Peter -- http://mail.python.org/mailman/listinfo/python-list
