Discussion:
[Python.NET] compiling for .NET CLR4, Python 2.7
John Burkhart
2012-10-30 12:19:29 UTC
Permalink
Hello,

I'm new to .NET and just trying to make available a few .NET dll files for
an application I would *like* to build in CPython. I'm trying to use
pythonnet for the task as I would prefer not to use IronPython. I have
Python 2.7 installed on a 64bit Windows 7 PC.

I have managed to get the latest svn version, confirmed required changes
according to:
http://blog.bidiuk.com/2011/01/python-net-and-vs2010-net-4/

were made. Though, it seemed most were no longer necessary in the latest
SVN version.

I also changed the Conditional Compilation symbols to: PYTHON27,UCS2 under
the Python.Runtime, Properties->Build tab.

I rebuilt the entire solution, and all compiled with no errors.

However, I get the following when I try to run Python.exe:

PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
.\python.exe
ImportError: No module named site
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>

Does anyone have experience building pythonnet for Python 2.7 and .NET 4?

Thank you in advance,
john
Thomas Stanley-Jones
2012-10-30 20:39:45 UTC
Permalink
I also tried to build on a 64bit Windows 7 machine and was not able to make
it work consistently. I was told that the issue was with the version of VS
that I used to build PythonNet. I am not knowledgeable in this area
however, and could not figure out how to get it to work consistently. I
was trying to use it with a distribution of CPython 2.6 (which caused me
the most trouble) and CPython 2.7. I stopped working on it as I could only
get 2.7 to see the PythonNet module. I'm curious what answers you come up
with as I would still love to get this to work on my machine.

Thomas
Post by John Burkhart
Hello,
I'm new to .NET and just trying to make available a few .NET dll files for
an application I would *like* to build in CPython. I'm trying to use
pythonnet for the task as I would prefer not to use IronPython. I have
Python 2.7 installed on a 64bit Windows 7 PC.
I have managed to get the latest svn version, confirmed required changes
http://blog.bidiuk.com/2011/01/python-net-and-vs2010-net-4/
were made. Though, it seemed most were no longer necessary in the latest
SVN version.
I also changed the Conditional Compilation symbols to: PYTHON27,UCS2 under
the Python.Runtime, Properties->Build tab.
I rebuilt the entire solution, and all compiled with no errors.
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
.\python.exe
ImportError: No module named site
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
Does anyone have experience building pythonnet for Python 2.7 and .NET 4?
Thank you in advance,
john
_________________________________________________
http://mail.python.org/mailman/listinfo/pythondotnet
John Burkhart
2012-11-01 08:54:17 UTC
Permalink
Interesting finding...

I just uninstalled EPD (Enthought Python Distribution) and installed
vanilla Python 2.7

So far it seems all is working.


On Tue, Oct 30, 2012 at 9:39 PM, Thomas Stanley-Jones <
Post by Thomas Stanley-Jones
I also tried to build on a 64bit Windows 7 machine and was not able to
make it work consistently. I was told that the issue was with the version
of VS that I used to build PythonNet. I am not knowledgeable in this area
however, and could not figure out how to get it to work consistently. I
was trying to use it with a distribution of CPython 2.6 (which caused me
the most trouble) and CPython 2.7. I stopped working on it as I could only
get 2.7 to see the PythonNet module. I'm curious what answers you come up
with as I would still love to get this to work on my machine.
Thomas
Post by John Burkhart
Hello,
I'm new to .NET and just trying to make available a few .NET dll files
for an application I would *like* to build in CPython. I'm trying to use
pythonnet for the task as I would prefer not to use IronPython. I have
Python 2.7 installed on a 64bit Windows 7 PC.
I have managed to get the latest svn version, confirmed required changes
http://blog.bidiuk.com/2011/01/python-net-and-vs2010-net-4/
were made. Though, it seemed most were no longer necessary in the latest
SVN version.
I also changed the Conditional Compilation symbols to: PYTHON27,UCS2
under the Python.Runtime, Properties->Build tab.
I rebuilt the entire solution, and all compiled with no errors.
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
.\python.exe
ImportError: No module named site
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
Does anyone have experience building pythonnet for Python 2.7 and .NET 4?
Thank you in advance,
john
_________________________________________________
http://mail.python.org/mailman/listinfo/pythondotnet
John Burkhart
2012-11-02 08:30:45 UTC
Permalink
Hello,

I have a request into Enthought for some insight on why I would get an
"ImportError" for the site module.

They've asked that I pose a question to the pythonnet group, and whether
anyone knows what custom PATH variables the pythonnet python.exe may be
searching?

Thank you,
john
Post by John Burkhart
Interesting finding...
I just uninstalled EPD (Enthought Python Distribution) and installed
vanilla Python 2.7
So far it seems all is working.
On Tue, Oct 30, 2012 at 9:39 PM, Thomas Stanley-Jones <
Post by Thomas Stanley-Jones
I also tried to build on a 64bit Windows 7 machine and was not able to
make it work consistently. I was told that the issue was with the version
of VS that I used to build PythonNet. I am not knowledgeable in this area
however, and could not figure out how to get it to work consistently. I
was trying to use it with a distribution of CPython 2.6 (which caused me
the most trouble) and CPython 2.7. I stopped working on it as I could only
get 2.7 to see the PythonNet module. I'm curious what answers you come up
with as I would still love to get this to work on my machine.
Thomas
Post by John Burkhart
Hello,
I'm new to .NET and just trying to make available a few .NET dll files
for an application I would *like* to build in CPython. I'm trying to use
pythonnet for the task as I would prefer not to use IronPython. I have
Python 2.7 installed on a 64bit Windows 7 PC.
I have managed to get the latest svn version, confirmed required changes
http://blog.bidiuk.com/2011/01/python-net-and-vs2010-net-4/
were made. Though, it seemed most were no longer necessary in the latest
SVN version.
I also changed the Conditional Compilation symbols to: PYTHON27,UCS2
under the Python.Runtime, Properties->Build tab.
I rebuilt the entire solution, and all compiled with no errors.
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
.\python.exe
ImportError: No module named site
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
Does anyone have experience building pythonnet for Python 2.7 and .NET 4?
Thank you in advance,
john
_________________________________________________
http://mail.python.org/mailman/listinfo/pythondotnet
John Burkhart
2012-11-02 14:41:45 UTC
Permalink
Hello,

Final update on this thread.

For those interested. I managed to build the svn repo with Visual Studio
2012 and run it under EPD Python.

My problems before were simply related to the PYTHONPATH settings under
system propoerties and a required reboot to get those settings to register
(welcome to windows?). My PYTHONPATH is now:
C:\Python27\Libs; C:\Python27\Libs\site-packages

I can run the pythonnet python.exe and import python modules such as os,
sys, and datetime.

I changed all the build environment settings to target .NET 4. as described
in my initial post.

--john
Post by John Burkhart
Hello,
I have a request into Enthought for some insight on why I would get an
"ImportError" for the site module.
They've asked that I pose a question to the pythonnet group, and whether
anyone knows what custom PATH variables the pythonnet python.exe may be
searching?
Thank you,
john
Post by John Burkhart
Interesting finding...
I just uninstalled EPD (Enthought Python Distribution) and installed
vanilla Python 2.7
So far it seems all is working.
On Tue, Oct 30, 2012 at 9:39 PM, Thomas Stanley-Jones <
Post by Thomas Stanley-Jones
I also tried to build on a 64bit Windows 7 machine and was not able to
make it work consistently. I was told that the issue was with the version
of VS that I used to build PythonNet. I am not knowledgeable in this area
however, and could not figure out how to get it to work consistently. I
was trying to use it with a distribution of CPython 2.6 (which caused me
the most trouble) and CPython 2.7. I stopped working on it as I could only
get 2.7 to see the PythonNet module. I'm curious what answers you come up
with as I would still love to get this to work on my machine.
Thomas
Post by John Burkhart
Hello,
I'm new to .NET and just trying to make available a few .NET dll files
for an application I would *like* to build in CPython. I'm trying to use
pythonnet for the task as I would prefer not to use IronPython. I have
Python 2.7 installed on a 64bit Windows 7 PC.
I have managed to get the latest svn version, confirmed required
http://blog.bidiuk.com/2011/01/python-net-and-vs2010-net-4/
were made. Though, it seemed most were no longer necessary in the
latest SVN version.
I also changed the Conditional Compilation symbols to: PYTHON27,UCS2
under the Python.Runtime, Properties->Build tab.
I rebuilt the entire solution, and all compiled with no errors.
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
.\python.exe
ImportError: No module named site
PS G:\svn\Python\pythonnet\trunk\pythonnet\src\console\bin\Debug>
Does anyone have experience building pythonnet for Python 2.7 and .NET 4?
Thank you in advance,
john
_________________________________________________
http://mail.python.org/mailman/listinfo/pythondotnet
niki
2012-10-31 09:06:25 UTC
Permalink
On 30.10.2012 14:19, John Burkhart wrote:> Hello,
Post by John Burkhart
I'm new to .NET and just trying to make available a few .NET dll files for
an application I would *like* to build in CPython. I'm trying to use
pythonnet for the task as I would prefer not to use IronPython. I have
Python 2.7 installed on a 64bit Windows 7 PC.
Are you using VS2008? If not try.

Niki

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John Burkhart
2012-11-01 07:28:22 UTC
Permalink
Thanks for the reply. I only have Visual Studio 2012 available to me... is
there a setting somewhere I could play with? I'm new to working with MS
Windows and VS...

Thank you!
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