Rework CALL_FUNCTION* opcodes

Issue #27213: Rework CALL_FUNCTION* opcodes to produce shorter and more
efficient bytecode:

* CALL_FUNCTION now only accepts position arguments
* CALL_FUNCTION_KW accepts position arguments and keyword arguments, but keys
  of keyword arguments are packed into a constant tuple.
* CALL_FUNCTION_EX is the most generic, it expects a tuple and a dict for
  positional and keyword arguments.

CALL_FUNCTION_VAR and CALL_FUNCTION_VAR_KW opcodes have been removed.

2 tests of test_traceback are currently broken: skip test, the issue #28050 was
created to track the issue.

Patch by Demur Rumed, design by Serhiy Storchaka, reviewed by Serhiy Storchaka
and Victor Stinner.

1 files changed, 1 insertions, 1 deletions

diff --git a/Lib/dis.py b/Lib/dis.py
index 556d84e..e958c8a 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -314,7 +314,7 @@ def _get_instructions_bytes(code, varnames=None, names=None, constants=None,
                 argrepr = argval
             elif op in hasfree:
                 argval, argrepr = _get_name_info(arg, cells)
-            elif op in hasnargs:
+            elif op in hasnargs: # unused
                 argrepr = "%d positional, %d keyword pair" % (arg%256, arg//256)
         yield Instruction(opname[op], op,
                           arg, argval, argrepr,