Object References, Mutability, and Recycling Links in the book. Link Recommendation (out of 10) Read copy — shallow and deep copy operations — python 3.8.6rc1 documentation [ ] pypy, garbage collection, and a deadlock [ ] weakref — weak references — python 3.8.6rc1 documentation [ ] weakref — weak references — python 3.8.6rc1 documentation [ ] conferences - o'reilly media [ ] python 103: mmmm... understanding python's memory model, mutability, and methods - youtube [ ] pymotw [ ] the python 2 standard library by example – doug hellmann [ ] copy – duplicate objects - python module of the week [ ] weakref – garbage-collectable references to objects - python module of the week [ ] gc — garbage collector interface — python 3.8.6rc1 documentation [ ] how does python manage memory? [ ] pep 442 -- safe object finalization [ ] string interning - wikipedia [ ] python garbage collector implementations cpython, pypy and gas [ ] paste style guide — paste 1.7.5.1 documentation [ ]