[capi-sig] PyRun_InteractiveOne from string?

[Campbell Barton]

In blender 2.5 we have an interactive console with multi-line support
and auto complete.
Demo of using the console
http://sites.google.com/site/satishgoda/blender/learningblender25/introduction-to-blender-python-api

Heres the script which interfaces python and blenders generic console
api, look at how it uses the 'code' module.
http://www.google.com/codesearch/p?hl=en#J_CGftyjihw/release/scripts/op/console_python.py&q=console_python&sa=N&cd=1&ct=rc

We do our own line editing functionality but basically you can use the
code module like this
  import code
  namespace = {'__builtins__': __builtins__}
  code.InteractiveConsole(namespace)
  is_multiline = console.push(line_exec) # <--- this is the line you
need to run in a loop and give user input to.

even though you mention not having a console, for the record that can
be done like this...
PyRun_String("__import__('code').interact()", Py_eval_input,
namespace, namespace);

On Thu, Jun 10, 2010 at 8:59 PM, Dave Brotherstone <davegb at pobox.com> wrote:
> Hi,
>
> I hope I'm asking this in the right place...  I've embedded Python in an
> application, and I'm now trying to emulate a "console" for immediate
> commands.  I can see PyRun_InteractiveOneFlags and the variants are used to
> send single statements, but there doesn't seem to be any variants that take
> a string, only a FILE*.  I'm in a windows app, so there's no console.  (I
> actually have effectively two text boxes, one multi-line read only for
> stdout/stderr, and one input.), I know the prompt would be in the wrong
> place, but that's no biggie.
>
> PyRun_String does almost what I want, except that it fails on multiline
> statements (if ... : etc).
>
> I just wanted to check if there's an API I've missed, or, whether anyone can
> recommend an approach.
>
> I think I could either:
> a) Emulate the console through an FILE* - not sure quite how this works in
> Windows, but I'm sure it's possible
> b) Copy what PyRun_InteractiveOneFlags() does, just replacing
> the PyParser_ASTFromFile with PyParser_ASTFromString.  Only problem here is
> that I seem to need mod_ty, and not sure whether it's a good idea to use
> something that looks like an internal type.
>
> Many thanks for any comments.
>
> Dave.
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-- 
- Campbell