[Bf-python] Python in Blender for Pycon

[joe]

Our python setup is a bit different now since the 2.5 project.  We now
require python 3.1 or greater.  I believe we also bundle python with
blender on all OS's now.

The API was completely rewritten for the 2.5 project.  We now use a
system called RNA to define generic API interfaces, which
theoretically could be plugged into any language.  This system lets us
flexibly create wrappers around the core data structures, with
built-in numeric limits, documentation strings, etc.

The UI is now driven by python, as is a few import/export scripts, but
by and large the python API is still fairly incomplete, and is likely
to change/evolve quite a bit.

Joe

On Sun, Nov 15, 2009 at 10:26 PM, Peter Shinners <pete at shinners.org> wrote:
> I've been discussing with several commercial vendors about how Python is
> built into their applications. Currently we've been focused on how
> Python is being compiled and which versions, compilers, UCS, and other
> specifics are chosen. Being open source, Blender works a little
> different. Hopefully any gurus can answer all or some of the questions
> below.
>
>
> The Windows binaries do include Python. Is this a prebuilt version of
> Python you deliver, or are you compiling your own? If you are compiling
> your own, are you matching the compiler used by Python on Windows, or
> does this match the compiler that builds the rest of Blender?
>
> On Unix platforms Blender gets compiled against a version of Python. At
> startup, some attempt is made to find the Python libraries, although the
> executable link is linked to the python .so. What is happening here when
> Blender prints this at startup?
> """
> Compiled with Python version 2.6.2.
> Checking for installed Python... got it!
> """
>
> Blender looks like it will compile against a wide range of Python
> versions, going back at least as far as Python 2.3 in the lastest 2.49b?
> Is much effort required to support this, or does is the api flexible
> enough to not worry?
>
> Blender seems to include a large selection of Python plugins to run. I
> am seeing them from the Scripts interface panel, but can't find any
> correlating Python files anywhere. Where are these Python scripts
> deployed and how are they registered in the interface like this?
>
> Thanks, Blender gurus!
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