The highest protocol version available. This value can be passed as a
*protocol* value.
-.. note::
-
- Be sure to always open pickle files created with protocols >= 1 in binary mode.
- For the old ASCII-based pickle protocol 0 you can use either text mode or binary
- mode as long as you stay consistent.
-
- A pickle file written with protocol 0 in binary mode will contain lone linefeeds
- as line terminators and therefore will look "funny" when viewed in Notepad or
- other editors which do not support this format.
-
.. data:: DEFAULT_PROTOCOL
The default protocol used for pickling. May be less than HIGHEST_PROTOCOL.