[Bf-python] Integrating IPython with blender

[HartsAntler]

Gabriel,
You could try compiling blender as bpy.so, blender as a dynamic library
that you can import into normal Python.  Rather than try to make IPython
work inside of the Python embedded in Blender.


On Sun, Sep 15, 2013 at 12:01 PM, Gabriel Elkind <gwelkind at wesleyan.edu>wrote:

> Hello!
>
> I am still getting familiar with blender's backend. In all other coding I
> do with python, I use IPython <http://ipython.org/index.html>, which
> allows me to log all input and output, issue bash commands quickly and
> simply, query docstrings and sourcecode of functions within the interpreter
> and use a robust tab completion. I have been searching for a way to
> integrate blender and ipython for about a week now and running into many
> roadblocks. I hope it's alright that I am emailing you all about it, as
> (from my queries to forums) this seems like a feature that many people
> want, and I believe that it could catalyze 3rd party blender development in
> a big way by making coding with blender much easier to learn.
>
> I understand that an identical venture<http://pythonide.blogspot.com/2009/03/resumable-ipython-inside-blender_31.html>has found success in 2009 in integrating ipython with blender, however this
> solution no longer works. Perhaps there is a way of tweaking it to work,
> but I'm afraid I do not understand what is happening well enough to know
> where to begin. I have tried a couple other approaches:
>
> First, I attempted to use the internal blender console to embed IPython. I
> append my standard python3 sys.path to the internal blender sys.path, then
> I do:
>
> import IPython
> IPython.embed()
>
> and I get the following traceback:
> >>> npath =  ['',
> ...  '/usr/bin',
> ...  '/usr/lib/python3.3',
> ...  '/usr/lib/python3.3/plat-x86_64-linux-gnu',
> ...  '/usr/lib/python3.3/lib-dynload',
> ...  '/usr/local/lib/python3.3/dist-packages',
> ...  '/usr/lib/python3/dist-packages',
> ...  '/usr/lib/python3/dist-packages/IPython/extensions']
> >>> import sys
> >>> for p in npath:
> ...     sys.path.append(p)
> ...
> >>> import IPython
> >>> IPython.embed()
> Traceback (most recent call last):
>   File "<blender_console>", line 1, in <module>
>   File
> "/usr/lib/python3/dist-packages/IPython/frontend/terminal/embed.py", line
> 282, in embed
>     _embedded_shell = InteractiveShellEmbed(**kwargs)
>   File
> "/usr/lib/python3/dist-packages/IPython/frontend/terminal/embed.py", line
> 97, in __init__
>     display_banner=display_banner
>   File
> "/usr/lib/python3/dist-packages/IPython/frontend/terminal/interactiveshell.py",
> line 360, in __init__
>     user_module=user_module, custom_exceptions=custom_exceptions
>   File "/usr/lib/python3/dist-packages/IPython/core/interactiveshell.py",
> line 455, in __init__
>     self.init_readline()
>   File "/usr/lib/python3/dist-packages/IPython/core/interactiveshell.py",
> line 1844, in init_readline
>     self.refill_readline_hist()
>   File "/usr/lib/python3/dist-packages/IPython/core/interactiveshell.py",
> line 1853, in refill_readline_hist
>     stdin_encoding = sys.stdin.encoding or "utf-8"
> AttributeError: 'NoneType' object has no attribute 'encoding'
>
> I have tried to use the -d option which (according to the blender man
> pages) should ensure that sys.stdin is not set to None, however, in both
> 2.66 and 2.68a sys.stdin evaluates to None even with this option set.
>
> My other route of action has been to use the terminal I am running blender
> from as the interpreter using `blender --python-console`. Unfortunately,
> this option results in a blank window and when I attempt to embed IPython I
> get the following traceback:
>
> >>> import IPython
> >>> IPython.embed()
> ---------------------------------------------------------------------------
> KeyError                                  Traceback (most recent call last)
> /usr/lib/python3.3/code.py in runcode(self, code)
>      88         """
>      89         try:
> ---> 90             exec(code, self.locals)
>      91         except SystemExit:
>      92             raise
>
> <console> in <module>()
>
> /usr/lib/python3/dist-packages/IPython/frontend/terminal/embed.py in
> embed(**kwargs)
>     281     if _embedded_shell is None:
>     282         _embedded_shell = InteractiveShellEmbed(**kwargs)
> --> 283     _embedded_shell(header=header, stack_depth=2)
>
> /usr/lib/python3/dist-packages/IPython/frontend/terminal/embed.py in
> __call__(self, header, local_ns, module, dummy, stack_depth, global_ns)
>     155         # Call the embedding code with a stack depth of 1 so it
> can skip over
>     156         # our call and get the original caller's namespaces.
> --> 157         self.mainloop(local_ns, module, stack_depth=stack_depth,
> global_ns=global_ns)
>     158
>     159         self.banner2 = self.old_banner2
>
> /usr/lib/python3/dist-packages/IPython/frontend/terminal/embed.py in
> mainloop(self, local_ns, module, stack_depth, display_banner, global_ns)
>     202             if module is None:
>     203                 global_ns = call_frame.f_globals
> --> 204                 module = sys.modules[global_ns['__name__']]
>     205
>     206         # Save original namespace and module so we can restore
> them after
>
> KeyError: '__console__'
>
> I am using Linux Mint 15, IPython 3.3.1, blender 2.66 and 2.68a (getting
> the same results in all cases with both versions of blender).
>
> Thank you very much :)
>
> ~Gabriel
>
>
>
>
>
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>
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