Issue #12848: The pure Python pickle implementation now treats object lengths as unsigned 32-bit integers, like the C implementation does.
Patch by Serhiy Storchaka.

Issue #12848: The pure Python pickle implementation now treats object lengths as unsigned 32-bit integers, like the C implementation does.
Patch by Serhiy Storchaka.

Patch by Daniel Urban

* Remove example deemed not helpful.
* Simplify the other one.
* Add missing target to ref.

Patch by Serhiy Storchaka.

  (actually, any non-string or non-bytes type).

#16306: Fix multiple error messages when unknown command line parameters where passed to the interpreter.  Patch by Hieu Nguyen.