On Sep 25, 9:11 pm, Torsten Mohr <tm...@s.netic.de> wrote: > I'd like to refer to another entry and not copy that entry, i need to > know later that this is a reference to another entry, i need to find > also access that entry then. > > The references only need to refer to entries in this structure. > The lists may change at runtime (entries removed / added), so > storing the index may not help.
Python already stores everything as a reference, no need to invent your own. Consider this example: >>> data = "This is real data" >>> container = [ data, [ data ]] >>> container ['This is real data', ['This is real data']] 'container' contains a reference to the data, and another list, with another reference. You can easily check this by using a built-in function id() which returns an object's identity: >>> id(container[0]) 140191569359088 >>> id(container[1][0]) 140191569359088 >>> id(data) 140191569359088 So all python lists and dicts hold are references, and the real data is elsewhere. Do you really need to have real reference to your data in one place, or you are trying to avoid infinite loops in your data (python handles this as well)? -- http://mail.python.org/mailman/listinfo/python-list
