STINNER Victor <[email protected]> added the comment:
> The "ill-defined" in Python 3.6 relates to the fact that we never actually
> defined or tested which environment variables were read by Py_Main and which
> ones were read by Py_Initialize, since the majority of our tests only covered
> Py_Main (by launching a full Python subprocess).
>
> Thus the only way to find out which environment variables fell into which
> category would be to read the Python 3.6 source code.
Oh ok, I see. Thanks for the explanation.
> That's technically still the case for Python 3.7, but Victor's done some
> excellent refactoring work so it's much clearer in the code which vars may be
> updated if Py_Initialize is run a second time.
Well, for me the most important part is not the code, but tests. test_embed
currently tests the following environment variables:
static void test_init_env_putenvs(void)
{
putenv("PYTHONHASHSEED=42");
putenv("PYTHONMALLOC=malloc_debug");
putenv("PYTHONTRACEMALLOC=2");
putenv("PYTHONPROFILEIMPORTTIME=1");
putenv("PYTHONMALLOCSTATS=1");
putenv("PYTHONUTF8=1");
putenv("PYTHONVERBOSE=1");
putenv("PYTHONINSPECT=1");
putenv("PYTHONOPTIMIZE=2");
putenv("PYTHONDONTWRITEBYTECODE=1");
putenv("PYTHONUNBUFFERED=1");
putenv("PYTHONNOUSERSITE=1");
putenv("PYTHONFAULTHANDLER=1");
putenv("PYTHONDEVMODE=1");
/* FIXME: test PYTHONWARNINGS */
/* FIXME: test PYTHONEXECUTABLE */
/* FIXME: test PYTHONHOME */
/* FIXME: test PYTHONDEBUG */
/* FIXME: test PYTHONDUMPREFS */
/* FIXME: test PYTHONCOERCECLOCALE */
/* FIXME: test PYTHONPATH */
}
As you can see, the test suite is not complete yet. But since the tests are
there, it shouldn't be hard to extend the test suite.
test_embed has InitConfigTests in 3.7 and master branches. I'm not interested
to backport these tests to 3.6. I modified Python initialization deeply in 3.7,
and the status of the code in 3.6 is "undefined". I don't think that it's worth
it to backport these tests to 2.7 or 3.6. I success to focus on the master
branch where we want to finish the implementation of the PEP 432 which should
provide a better *public* API for that.
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<https://bugs.python.org/issue34247>
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