Use of "Pointers" or References for "memory management" in python? -

how might 1 go constructing linked list in python. realize python not low level. suppose have large object, , want contain reference large object in instances of class:

class largeobject:      def __init__(self):         # use lots of memory   class smallobject:      def __init__(self, large_object_ref):         self.large_object_ref = large_object_ref      # ...   largeobj = largeobject() smallobj = smallobject(largeobj) # happens in memory?  

i want ensure self.large_object_ref never becomes deep copied instance of largeobject in memory, how prevent this/ensure this?

i admit know little python's memory model or management, 1 isn't supposed have in python. familiar c/++ though borrowing terms , ideas area.

python pass-by-assignment equal pass-by-reference mutable objects (and of user-created objects mutable).