"Brett C." <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
At to the title, bytecodes are a property of the CPython implementation, not of Python itself. Since I think the distinction is quite important to maintain, I would insert the missing 'C' and everywhere else as appropriate. > After implementing over 10 new opcodes for my thesis I figured I should > write down the basic steps in an info PEP so that there is enough > guidelines with this PEP and PEP 306 to cover the bases on changes to the > language itself. Over the last several years, various people have reported experimenting with CPython's bytecodes. I wonder if it would be helpful to have a respository of the results, in one place, for new experimenters and curious people to peruse. > Anyway, let me know if I seem to be missing anything or have something to > add. As I said, the importanct 'C' qualifier. > PEP: XXX > Title: How to change Python's bytecode /P/CP/ > Python source code is compiled down to something called bytecode. Suggested replacements in quotes: "CPython compiles Python source code to something called bytecode." > This bytecode (which can be viewed as sequences of opcodes) > defines what Python is capable of. This is backwards. "The language, as defined in the Reference Manual, determines what bytecodes are needed (collectively, not one by one) for a bytecode implementation." > As such, knowing how to add, remove, or change the bytecode is > important to do properly when changing the abilities of the Python > language. "Therefore, changes in the language may require changes in the set of bytecodes. In addition, changing the bytecode set for a given definition may result in desireable changes in the interpreter behavior. This document describes how to do so for either reason." > Rationale > ========= > > While changing Python's bytecode is not a frequent occurence, it still > happens. /P/CP/ Experiments are much more frequent than committed changes -- all of which start as experiments. ... Terry J. Reedy _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
