[Python.NET] homebrew pythonnet, versus pip install --pre pythonnet

Tony Roberts tony at pyxll.com
Wed Jun 4 12:15:23 CEST 2014

Hi Adam,

that 2.0.0.beta1 build was built from the source on github here:

You should build it using the setup.py script and not in the IDE.

There are CI builds setup for both windows and linux (see README.md) if you
want to see exactly how the wheel gets built.

Best regards,

On Wed, Jun 4, 2014 at 3:48 AM, Bradley Friedman <brad at fie.us> wrote:

> Can you provide the contents of the ".Config" file that is built with your
> particular build solution?  There's a pretty good chance that the
> "FileNotFound" is actually mono trying to link back to Python shared
> libraries.  Though to be honest, debugging is going to be your best bet
> here.  You might try building in Xamarin or MonoDevelop on the mac, to be
> able to debug more easily.
> -brad
> On Jun 3, 2014, at 7:15 PM, Tribble, Brett <btribble at ea.com> wrote:
> It has been a while since I’ve had to deal with this, but make sure that
> your assembly is in the system path and/or pythonpath if it is not
> registered in the GAC.
> *From:* PythonDotNet [
> mailto:pythondotnet-bounces+btribble=ea.com at python.org
> <pythondotnet-bounces+btribble=ea.com at python.org>] *On Behalf Of *Adam
> Klein
> *Sent:* Tuesday, June 03, 2014 4:02 PM
> *To:* pythondotnet at python.org
> *Subject:* [Python.NET] homebrew pythonnet, versus pip install --pre
> pythonnet
> Hi All,
> Amazing library, first of all!
> I am experimenting with integrating ipython / numpy / pandas for
> interactive data analysis with our large existing C# codebase. We are using
> the Anaconda 2.0 release from ContinuumIO. With `pip install –pre
> pythonnet`, everything goes as expected (great!)
> However, when I build from source (in VS2013), point my PYTHONPATH to the
> clr.pyd and Python.Runtime.dll that results from the build, and run my
> ipython, I can do `import clr` and `ref =
> clr.AddReference(“assemblyname”)`, but I cannot load any modules within
> this assembly. I get a `ImportError: No module named …` Furthermore, if I
> try to do ref.ExportedTypes, I get a `FileNotFoundException: Could not load
> file or assembly …` where it cannot find an assembly that is referenced by
> the original assembly. There must be some broken loading going on… Any
> thoughts why this might have different behavior than what I install via
> PyPI (https://pypi.python.org/pypi/pythonnet/2.0.0.dev1)? Or, hints on
> how to debug?
> Thanks!!!
> --Adam
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