[Python-Dev] Changing the Division Operator -- PEP 238, rev 1.12

Guido van Rossum guido@zope.com
Mon, 30 Jul 2001 15:11:17 -0400

> [Michael Hudson]
> >     One - probably called Compile - will sport a __call__ method which
> >     will act much like the builtin "compile" of 2.1 with the
> >     difference that after it has compiled a __future__ statement, it
> >     "remembers" it and compiles all subsequent code with the
> >     __future__ options in effect.
> > 
> >     It will do this by examining the co_flags field of any code object
> >     it returns, which in turn means writing and maintaining a Python
> >     version of the function PyEval_MergeCompilerFlags found in
> >     Python/ceval.c.

> FYI, in Jython (internally) we have a series of compile_flags functions
> that take a "opaque" object CompilerFlags that is passed to the function
> and compilation actually change the object in order to reflect future
> statements encoutered during compilation...
> Not elegant but avoids code duplication.
> Of course we can change that.

Does codeop currently work in Jython?  The solution should continue to
work in Jython then.  Does Jython support the same flag bit values as
CPython?  If not, Paul Prescod's suggestion to use keyword arguments
becomes very relevant.

--Guido van Rossum (home page: http://www.python.org/~guido/)