According to the Changelog they were added in 2004
2004-07-24 Michael Gogins <
gogins@...>
* Python opcodes: imported Maurizio Umberto Puxeddu's Python opcodes for
Csound 4 from Gabriel Maldonado's CsoundAV sources, updated for Csound 5 with
opcode error status return values. Currently these opcodes only work in
CsoundVST, but I may add a pyinit opcode to make them work in command-line
csound.
The licence change was in 2003 and I have checked my records and
Mauricio was not one of the people contacted as his name did not
appear in the sources.
I have a memory of adding the {{ }} syntax under pressure from users.
As I have never used the python opcodes (or indeed much python at all)
for a long time I did not build any python stuff.
I note that the Opcodes/py files have a 2002 copyright notice, and as
it stands should be removed from SF. I did attempt to contact
Mauricio again last night at a couple of addresses I had not found
earlier.
==John ffitch
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