http://qs1969.pair.com?node_id=506295


in reply to Re^2: Old sorting paper holds the key to unlocking the secrets of the Schwartzian Transform
in thread Old sorting paper holds the key to unlocking the secrets of the Schwartzian Transform

Erm, no, Python's "decorate-sort-undecorate" is closer to the GRT than the Scwhartzian Transform ... as pointed out in this "old" fwp thread. Curiously, and following on from this, some years later davorg received a surprise free copy of the 2nd edition of the Python Cookbook! :-)

See also this classic "old" PM node: Advanced Sorting - GRT - Guttman Rosler Transform.