Alright, that actually really worked pretty good, and I finally got it
all working as it should. However, I'm running into 1 more little issue,
now I need to go the other way around aswell. I have several functions
marked in my application as PythonExportable. In a certain startup phase
of the application, after creating the IronPython hosting environment, I
walk over all these classes using Reflection, take the tagged functions
and put these into my IP scope.
However, my simple tests for some reason cause my SetVariable() calls to
not work. I added 2 tests to my scripts, one where I add a variable into
the scope and another one where I add a delegate. However, in both
cases, whenever I use these variables from within my scripts, they don't
seem to work. Code:
Func<string> test = new Func<string>(Test);
scope.SetVariable("x", 10);
scope.SetVariable("Test", test);
Accessing them in my scripts have the effect of triggering an exception
that shows that x is undefined.
Some insights into this would be of great help.
Patrick
Michael Foord wrote:
See this section of my hosting article:
http://www.voidspace.org.uk/ironpython/hosting_api.shtml#functions-as-delegates
You cast the function to a delegate as you fetch it out of the scope.
Michael
Patrick van der Willik wrote:
I'm a bit late with responding to this as I was kinda busy. I used
the code that was given Stephen and it seems to run properly without
throwing exceptions. However, I created a little autoexec.py file
with a simple function in it with 2 parameters.
The main problem here is: How do I call the function through the
scope? I used engine.CreateScope() to create myself a new scope, but
from there on, I'm basically lost(again). What I basically want to
do, is call my function 'add' with 2 parameters(say, 10 and 15). The
modules itself are loaded into a ScriptSource.
Thanks,
Patrick
Lepisto, Stephen P wrote:
What I do when I want to work with python modules from embedded
IronPython is set the IronPython search path with the path of the
module to load then create and execute a small python script that
loads the main python modules into the current scope.
string moduleName = Path.GetFileName(modulePath);
string path = Path.GetDirectoryName(modulePath);
ICollection<string> paths = _pythonEngine.GetSearchPaths();
if (!paths.Contains(path))
{
paths.Add(path);
_pythonEngine.SetSearchPaths(paths);
}
string modInvoke = String.Format("import {0}\nfrom {0} import *\n",
moduleName);
ScriptSource source =
_pythonEngine.CreateScriptSourceFromString(modInvoke,
Microsoft.Scripting.SourceCodeKind.Statements);
Where modulePath is the full path to the python module or package to
load.
I can then invoke methods or access attributes using the IronPython
scope. In this way, I can interact with the python modules for as
long as necessary before closing down the scope/engine.
*From:* users-boun...@lists.ironpython.com
[mailto:users-boun...@lists.ironpython.com] *On Behalf Of *Dody
Gunawinata
*Sent:* Thursday, June 11, 2009 9:09 AM
*To:* Discussion of IronPython
*Subject:* Re: [IronPython] Embedding IronPython and calling python
functions from C#
You can read all yours file scripts, then using StringBuilder to
combine then and call CreateScriptSourceFromString()
Then you can call your functions within the combined scripts
normally. Pretty much you are creating a giant source code on the fly.
On Thu, Jun 11, 2009 at 5:32 PM, Patrick van der Willik
<patr...@toolmaker.nl <mailto:patr...@toolmaker.nl>> wrote:
I'm currently attempting to embed the IronPython 2 runtimes into an
existing application written in C#. However, I find the amount of
documentation lacking on what I'm trying to do. I currently have a
proof-of-concept version which uses Lua and LuaInterface, but the
people who have to write the scripts dislike Lua(Well, more hate it
with a passion) and would love to see this working with Python.
My host application is a networked application that must trigger
certain scripts functions on events generated by the connected
clients. The idea is that when my application starts, it will load
the IronPython script environment, launches an 'autoexec.py' which
will load various other scripts files and do some housekeeping. Once
this all is completed, it will start listening to incoming
connections. However, in various scenarios, the application has to
trigger scripted functions when data is received from a client.
Which script function is called is different per client and per
event. I have events for connecting, logging on, disconnecting and a
set of data specific events after receiving data. This highly
depends on the received packets.
My question here is: How do I embed IronPython in such a fashion
that I can load my scripts and then trigger various functions within
that? I've seen many examples that just call
CreateScriptSourceFromString() or File each time in which just 1
piece of code is implemented. This is not suitable for the needs
here because the scripted systems can become quite complex.
With regards,
Patrick
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