[Bf-python] Interfacing Blender with IPython

[klo uo]

On Thu, Jun 28, 2012 at 6:17 PM, Campbell Barton wrote:
> There is nothing special about my build environment, stock ubuntu
> 12.04 and arch linux - I've done this many times with bpython and
> ipython, with old blender 2.4x, the game engine and more recently with
> py3. this always worked fine.
>
> Could you try this on a recent build? - if there is some crash it
> would be good to get a backtrace.

OK, here is what I got on Ubuntu 12.04 32bit with 3 different Blender versions:

1. Any Blender version and IPython 0.12.1 installed from Ubuntu repositories:

  | >>> import sys
  | >>> sys.path
  | ['/usr/lib/blender/scripts/addons',
'/usr/lib/blender/scripts/startup',
'/usr/lib/blender/scripts/modules', '/usr/lib/python3.2/',
'/usr/lib/python3.2/plat-linux2', '/usr/lib/python3.2/lib-dynload',
'/usr/lib/blender/scripts/addons/modules']
  |
  | >>> sys.path.append('/usr/lib/python3/dist-packages')
  | >>> from IPython import embed
  | Traceback (most recent call last):
  |   File "<blender_console>", line 1, in <module>
  |   File "/usr/lib/python3/dist-packages/IPython/__init__.py", line
43, in <module>
  |     from .config.loader import Config
  |   File "/usr/lib/python3/dist-packages/IPython/config/loader.py",
line 27, in <module>
  |     from IPython.utils.path import filefind, get_ipython_dir
  |   File "/usr/lib/python3/dist-packages/IPython/utils/path.py",
line 24, in <module>
  |     from IPython.utils.process import system
  |   File "/usr/lib/python3/dist-packages/IPython/utils/process.py",
line 27, in <module>
  |     from ._process_posix import _find_cmd, system, getoutput, arg_split
  |   File "/usr/lib/python3/dist-packages/IPython/utils/_process_posix.py",
line 27, in <module>
  |     from IPython.utils import text
  |   File "/usr/lib/python3/dist-packages/IPython/utils/text.py",
line 30, in <module>
  |     from IPython.utils.io import nlprint
  |   File "/usr/lib/python3/dist-packages/IPython/utils/io.py", line
90, in <module>
  |     stdin = IOStream(sys.stdin)
  |   File "/usr/lib/python3/dist-packages/IPython/utils/io.py", line
32, in __init__
  |     raise ValueError("fallback required, but not specified")
  | ValueError: fallback required, but not specified


2. Blender 2.62-1 from Ubuntu repository and IPython 0.13dev (compiled
git version):

  | >>> import sys
  | >>> sys.path.append('/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg')
  | >>> from IPython import embed
  | >>> embed()

 - CPU maxed, memory pumping, with no output in terminal from which
Blender was started (also I tried various Blender debug switches -
it's same). This is the same as with my svn Blender compile


3. Blender-2.63a-linux-glibc27-i686 from blender.org and IPython
0.13dev (compiled git version):

  | >>> import sys
  | >>> sys.path.append('/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg')
  | >>> from IPython import embed
  | >>> embed()
  | Traceback (most recent call last):
  |   File "<blender_console>", line 1, in <module>
  |   File "/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg/IPython/frontend/terminal/embed.py",
line 282, in embed
  |     _embedded_shell = InteractiveShellEmbed(**kwargs)
  |   File "/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg/IPython/frontend/terminal/embed.py",
line 97, in __init__
  |     display_banner=display_banner
  |   File "/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg/IPython/frontend/terminal/interactiveshell.py",
line 317, in __init__
  |     user_module=user_module, custom_exceptions=custom_exceptions
  |   File "/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg/IPython/core/interactiveshell.py",
line 452, in __init__
  |     self.init_user_ns()
  |   File "/home/klo/.local/lib/python3.2/site-packages/ipython-0.13.beta1-py3.2.egg/IPython/core/interactiveshell.py",
line 1122, in init_user_ns
  |     from site import _Helper
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/site.py",
line 529, in <module>
  |     main()
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/site.py",
line 517, in main
  |     known_paths = addusersitepackages(known_paths)
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/site.py",
line 263, in addusersitepackages
  |     user_site = getusersitepackages()
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/site.py",
line 238, in getusersitepackages
  |     user_base = getuserbase() # this will also set USER_BASE
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/site.py",
line 228, in getuserbase
  |     USER_BASE = get_config_var('userbase')
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/sysconfig.py",
line 577, in get_config_var
  |     return get_config_vars().get(name)
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/sysconfig.py",
line 474, in get_config_vars
  |     _init_posix(_CONFIG_VARS)
  |   File "/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/sysconfig.py",
line 339, in _init_posix
  |     raise IOError(msg)
  | IOError: invalid Python installation: unable to open
/home/klo/Downloads/blender-2.63a-linux-glibc27-i686/2.63/python/lib/python3.2/config-3.2mu/Makefile
(No such file or directory)


So I don't know what other combination to try, but probably you were
using some other version of both software?