how to "free" an object/var ?

[Terry Reedy]

"John Nagle" <nagle at animats.com> wrote in message 
news:AAXvh.1465$zH1.1114 at newssvr29.news.prodigy.net...
|    If your data structure has no backlinks, it will go away
| as soon as the last reference to it disappears.
|    In Python, garbage collection is mostly a backup to
| the reference counting system.

These both are true of the CPython implementation (current and known 
future, at least) but not of other implementations and not of the language 
itself.

The same comment applies to some other posts in this thread.  GC, if any, 
is implementation defined.

tjr