[Qemu-devel] [PATCH v2 0/5] qapi: support py2 & py3 in parallel

[Daniel P. Berrange]

Since I claimed that supporting py2 & py3 in parallel would be easy
for QEMU, I figured I ought to actually give it a try to backup that
assertion.

This small patch series is the result of that effort. I tested this
series on Fedora 26 using 2.7.13 and Python 3.6.2.

To test with py3, I hacked config-host.mak to change the PYTHON
variable to point to 'python3' binary, then compared the following
generated content for the files:

   qmp-commands.h qapi-types.h  qapi-visit.h  qapi-event.h
   qmp-marshal.c qapi-types.c qapi-visit.c qapi-event.c
   qmp-introspect.c qmp-introspect.h

with that generated under py2 to see they are identical.

It is possible there's still more bugs hiding that could impact
on 2.6 or earlier versions of 3.x or 2.7.x, so this probably
needs a bit wider testing, but I think the series illustrates
the broad scope of the changes we can expect. Only the need
to adapt to different module import locations adds to the
line count, and that's fairly minimal.

Daniel P. Berrange (5):
  qapi: convert to use python print function instead of statement
  qapi: use items()/values() intead of iteritems()/itervalues()
  qapi: Use OrderedDict from standard library if available
  qapi: adapt to moved location of StringIO module in py3
  qapi: Adapt to moved location of 'maketrans' function in py3

 scripts/qapi.py      | 41 +++++++++++++++++++++++++----------------
 scripts/qapi2texi.py | 11 ++++++-----
 2 files changed, 31 insertions(+), 21 deletions(-)

-- 
2.13.5