[Bf-python] Automating tasks in blender via blender --python script.py

[Rodrigo Benenson]

operators are in play...

regards,
rodrigob.

On Wed, May 2, 2012 at 4:22 PM, Bassam Kurdali <bassam at urchn.org> wrote:
> Quick question: what are you trying to do? Can you avoid using operators and
> just do it using bpy.data?
>
> On Wed May  2 2012 07:59:45 AM EDT, Rodrigo Benenson
> <rodrigo.benenson at gmail.com> wrote:
>
>> Dear Blender mailing list,
>>
>> I just spent 3 hours on the blender IRC trying to figure out how to
>> automate a specific task using a python script called via "blender
>> --python script.py".
>>
>> The purpose of the script is to open a blender file, apply some
>> operations and save the new blender file.
>> This must be done without any click from the user, so that the process
>> can be called via command line (i.e. as part of a bigger system).
>>
>> Quite rapidly I entered into "context hell" trying to figure out the
>> proper context to call "bpy.ops.graph.select_all_toggle();
>> bpy.ops.graph.sample()".
>> The answer to this was "the_scene.objects.active = the_object;
>> bpy.context.area.type='GRAPH_EDITOR' " (found by someone in the IRC 2
>> hours after my first attempt).
>>
>> The key problem now is that when running via  "blender --python
>> script.py" bpy.context.area is None, this seems to be a consequence of
>> bpy.context.window being None.
>>
>> > From what I could gather in the IRC, no one is aware of a method to
>> create a new window (or setup properly the bpy.context.area) from
>> python.
>> In this case the documentation is of no help (it does not even mention
>> bpy.context.area).
>>
>> Being able to launch automated tasks via "blender --python script.py"
>> seems like a natural usage of this feature, and has multiple use
>> cases.
>>
>> Does any one have a suggestion/idea on how we could make this work ?
>>
>> Thanks for your input.
>> Best regards,
>> rodrigob.
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>