Sorry. One more.
When my code then executes those callbacks, back into Python, it does so this
way:
System.Console.WriteLine("Getting Projects");
List<libcontextutilsclient.ProjectContextSettings> ret = new
List<libcontextutilsclient.ProjectContextSettings>(); //the things I expect
python to give me back
System.Console.WriteLine("Getting lock");
IntPtr p = this.Pedestal.GetPythonLock();
System.Console.WriteLine("Got Lock");
if (this.ProjectsRequested != null)
{
foreach (libcontextutils.GetProjectSettingsDelegate del in
this.ProjectsRequested.GetInvocationList()) //looping through callbacks on
delegate
{
System.Console.WriteLine("Calling Project Delegate");
ret.AddRange(del(projectsType, this)); //doing the
callback, which is a python callback in truth.
}
}
else
{
System.Console.Error.WriteLine("No delegates registered to
ProjectsRequested Event.");
}
System.Console.WriteLine("Releasing lock");
this.Pedestal.ReleasePythonLock(p);
System.Console.WriteLine("Released Lock");
return ret;
On Mar 28, 2013, at 5:34 PM, "[email protected]" <[email protected]> wrote:
> In my code I'm running:
>
> Python.Runtime.PythonEngine.Initialize();
>
> I also have these defined:
>
> public void AddPythonPath(string path)
> {
> CheckInitPython();
> IntPtr l = Python.Runtime.PythonEngine.AcquireLock();
> Python.Runtime.PythonEngine.RunSimpleString("import sys");
> Python.Runtime.PythonEngine.RunSimpleString("sys.path.append(\""
> + path.Replace("\\", "\\\\") + "\")");
> Python.Runtime.PythonEngine.ReleaseLock(l);
> }
>
> public Python.Runtime.PyObject ImportModule(string name)
> {
> CheckInitPython();
> IntPtr l = Python.Runtime.PythonEngine.AcquireLock();
> Python.Runtime.PyObject module =
> Python.Runtime.PythonEngine.ImportModule(name);
> Python.Runtime.PythonEngine.ReleaseLock(l);
> if (module == null)
> {
> throw new libscclient.PythonModuleNotCreatedException(name);
> }
> return module;
> }
>
> And when my code loads a "plugin" python module, it runs this:
>
> string pythonVersionBasePath = GetPythonCodeBaseVersionPath();
> //my dynamic plugin code.
> string scriptName = GetPythonScriptName(); //also my dynamic
> plugin code.
> System.Console.WriteLine("importing module");
> Pedestal.AddPythonPath(pythonVersionBasePath); //calling code
> above
> Python.Runtime.PyObject module =
> Pedestal.ImportModule(scriptName.Split(new char[] { '.' }, 2)[0]); //calling
> code above
> System.Console.WriteLine("module imported");
> IntPtr l = Pedestal.GetPythonLock();
> module.InvokeMethod(GetPythonInitMethodName(), new
> Python.Runtime.PyObject[] { Python.Runtime.PyObject.FromManagedObject(this)
> }); //calling a method by name. the name comes from my dynamic plugin code.
> module.Dispose(); //I'm done with the module so I toss it. my
> code here registers callbacks.
> Pedestal.ReleasePythonLock(l);
>
> On Mar 28, 2013, at 2:09 PM, "lizy10b" <[email protected]> wrote:
>
>> Thank you, Bradley.
>> I found a simple sample code on the maillist. Now I could load and execute a
>> pure python function in a py file in C#.
>>
>> And a new problem is that the PythonEngine.ImportModule("modulename") method
>> always return NULL in my case. The modulename.py comsumes a third part
>> ctypes wrapped library (the Rtree 0.7 python library). It seems the
>> PythonEngine can not find it, but actually it has been installed to the
>> default path (C:\Python262\Lib\site-packages\rtree) , and the modulename.py
>> file runs smoothly under python command line.
>> I worte a new py file which only contains a function returning the sys.path,
>> and load it in C#, the sys.path seems OK.
>> So I don't know what's wrong....
>>
>> Thanks.
>>
>> Zhiyu Li
>>
>>
>>
>>
>> 2013-03-29
>> lizy10b
>> 发件人： Bradley Friedman
>> 发送时间： 2013-03-28 22:15:18
>> 收件人： lizy10b
>> 抄送： pythondotnet
>> 主题： Re: [Python.NET] how to load and execute py file which consumes a thrid
>> part C-based python extension in C# code
>> What you are looking to do is "embed" a python interpreter in your .net
>> project, using pythonnet, and then tell the runtime to execute your python
>> script.
>>
>> I have done this in one of my projects. It does work.
>>
>> http://pythonnet.sourceforge.net/readme.html#embedding
>>
>> Sent from my iPad
>>
>> On Mar 28, 2013, at 8:31 AM, "lizy10b" <[email protected]> wrote:
>>
>>> Hi there,
>>> I am a freshman and new to python.net.
>>> I have a *.py script which calls a third part python library, and the
>>> library is a ctypes python wrapper of a C++ dll (or say C-based python
>>> extension?).
>>> Frist I tried to make it using IronPython. IronPython works well when I
>>> load a pure python *.py (no third part libraries) file and execute it in C#
>>> code.
>>> But it failed when I load a *.py which comsumes a thrid part ctypes python
>>> wrapper library mentioned above.
>>>
>>> Then I turn to python.net. But I don't know how to load and execute *.py in
>>> C# code using python.net.
>>>
>>> Thanks.
>>>
>>> Zhiyu Li
>>> Student
>>> China
>>>
>>> 2013-03-28
>>> lizy10b
>>> _________________________________________________
>>> Python.NET mailing list - [email protected]
>>> http://mail.python.org/mailman/listinfo/pythondotnet
>
> _________________________________________________
> Python.NET mailing list - [email protected]
> http://mail.python.org/mailman/listinfo/pythondotnet
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