[IronPython] Accessing search path through ScriptEngine
The script engine allows you to set the search path by calling ScriptEngine.SetScriptSourceSearchPaths, but it neither lets you query the existing path nor amend it -- just set it outright. Is this intentional? -- Curt Hagenlocher [EMAIL PROTECTED] ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
[IronPython] IP 2 Hosting
Hello guys, I'm trying to do some simple examples of hosting with IronPython 2. Boy you made things more complicated than IronPython 1. :-) Unfortunately the DLR hosting spec document is out of date. I have a couple of questions (but will keep exploring). The simplest use case is just to evaluate an expression and return a result. The hosting spec document mention 'ScriptRuntime.Execute(text)'. This may or may not be the right way to evaluate an expression, but in any case it has been removed. An alternative is: engine = PythonEngine.CurrentEngine # a ScriptEngine unit = engine.CreateSourceUnitFromString(code, id) result = unit.Execute() Which is straightforward enough, however I can't see a way to set TrueDivision using this technique. (What is the 'id' by the way?) I can see that TrueDivision is a setting on IronPython.Runtime.ModuleOptions and IronPython.Runtime.PythonModule. Can I set this on the engine somehow? All the alternative seem to lead down a rabbit warren of 'create this object - which requires this object - which you construct from another object - which...'. I don't know which path to follow down the rabbit hole... :-) Any suggestions to save me from madness? Michael ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] IP 2 Hosting
Some of those look like names from A9, which have changed in B1. The easiest way to evaluate an expression from scratch seems to be as follows: ScriptEngine engine = ScriptRuntime.Create().GetEngine(py); ScriptScope scope = engine.CreateScope(); ScriptSource source = engine.CreateScriptSourceFromString(1 + 1, SourceCodeKind.Expression); int result = source.Executeint(scope); On Sat, Mar 29, 2008 at 10:00 AM, Michael Foord [EMAIL PROTECTED] wrote: Hello guys, I'm trying to do some simple examples of hosting with IronPython 2. Boy you made things more complicated than IronPython 1. :-) Unfortunately the DLR hosting spec document is out of date. I have a couple of questions (but will keep exploring). The simplest use case is just to evaluate an expression and return a result. The hosting spec document mention 'ScriptRuntime.Execute(text)'. This may or may not be the right way to evaluate an expression, but in any case it has been removed. An alternative is: engine = PythonEngine.CurrentEngine # a ScriptEngine unit = engine.CreateSourceUnitFromString(code, id) result = unit.Execute() Which is straightforward enough, however I can't see a way to set TrueDivision using this technique. (What is the 'id' by the way?) I can see that TrueDivision is a setting on IronPython.Runtime.ModuleOptions and IronPython.Runtime.PythonModule. Can I set this on the engine somehow? All the alternative seem to lead down a rabbit warren of 'create this object - which requires this object - which you construct from another object - which...'. I don't know which path to follow down the rabbit hole... :-) Any suggestions to save me from madness? Michael ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] IP 2 Hosting
Curt Hagenlocher wrote: Some of those look like names from A9, which have changed in B1. I'm using B1. I expect they'll change in the next release though. *sigh* ;-) In the old days a beta used to mean the API was fixed and it was only bugfixes that would go in... 0.5 wink Michael The easiest way to evaluate an expression from scratch seems to be as follows: ScriptEngine engine = ScriptRuntime.Create().GetEngine(py); ScriptScope scope = engine.CreateScope(); ScriptSource source = engine.CreateScriptSourceFromString(1 + 1, SourceCodeKind.Expression); int result = source.Executeint(scope); On Sat, Mar 29, 2008 at 10:00 AM, Michael Foord [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hello guys, I'm trying to do some simple examples of hosting with IronPython 2. Boy you made things more complicated than IronPython 1. :-) Unfortunately the DLR hosting spec document is out of date. I have a couple of questions (but will keep exploring). The simplest use case is just to evaluate an expression and return a result. The hosting spec document mention 'ScriptRuntime.Execute(text)'. This may or may not be the right way to evaluate an expression, but in any case it has been removed. An alternative is: engine = PythonEngine.CurrentEngine # a ScriptEngine unit = engine.CreateSourceUnitFromString(code, id) result = unit.Execute() Which is straightforward enough, however I can't see a way to set TrueDivision using this technique. (What is the 'id' by the way?) I can see that TrueDivision is a setting on IronPython.Runtime.ModuleOptions and IronPython.Runtime.PythonModule. Can I set this on the engine somehow? All the alternative seem to lead down a rabbit warren of 'create this object - which requires this object - which you construct from another object - which...'. I don't know which path to follow down the rabbit hole... :-) Any suggestions to save me from madness? Michael ___ Users mailing list Users@lists.ironpython.com mailto:Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] IP 2 Hosting
Curt Hagenlocher wrote: Some of those look like names from A9, which have changed in B1. The easiest way to evaluate an expression from scratch seems to be as follows: ScriptEngine engine = ScriptRuntime.Create().GetEngine(py); ScriptScope scope = engine.CreateScope(); ScriptSource source = engine.CreateScriptSourceFromString(1 + 1, SourceCodeKind.Expression); int result = source.Executeint(scope); Oops - didn't read all of your message. I'm using B1 and my code seems *pretty* similar except for the useful addition of SourceCodeKind - thanks. Michael On Sat, Mar 29, 2008 at 10:00 AM, Michael Foord [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hello guys, I'm trying to do some simple examples of hosting with IronPython 2. Boy you made things more complicated than IronPython 1. :-) Unfortunately the DLR hosting spec document is out of date. I have a couple of questions (but will keep exploring). The simplest use case is just to evaluate an expression and return a result. The hosting spec document mention 'ScriptRuntime.Execute(text)'. This may or may not be the right way to evaluate an expression, but in any case it has been removed. An alternative is: engine = PythonEngine.CurrentEngine # a ScriptEngine unit = engine.CreateSourceUnitFromString(code, id) result = unit.Execute() Which is straightforward enough, however I can't see a way to set TrueDivision using this technique. (What is the 'id' by the way?) I can see that TrueDivision is a setting on IronPython.Runtime.ModuleOptions and IronPython.Runtime.PythonModule. Can I set this on the engine somehow? All the alternative seem to lead down a rabbit warren of 'create this object - which requires this object - which you construct from another object - which...'. I don't know which path to follow down the rabbit hole... :-) Any suggestions to save me from madness? Michael ___ Users mailing list Users@lists.ironpython.com mailto:Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] IP 2 Hosting
Curt Hagenlocher wrote: On Sat, Mar 29, 2008 at 10:32 AM, Michael Foord [EMAIL PROTECTED] wrote: In the old days a beta used to mean the API was fixed and it was only bugfixes that would go in... 0.5 wink heh It seems to me that B1 is more consistent with the various published DLR hosting specs than A9 was -- which suggests that the API churn for the Microsoft.Scripting namespace is dying down. Cool - I was just being rude. Any ideas on switching on TrueDivision for the scope? Michael -- Curt Hagenlocher [EMAIL PROTECTED] ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] IP 2 Hosting
On Sat, Mar 29, 2008 at 10:51 AM, Michael Foord [EMAIL PROTECTED] wrote: Cool - I was just being rude. Hey, I feel your pain! I'd swear that I've rewritten more hosting code than I've written... Any ideas on switching on TrueDivision for the scope? This is what I was able to puzzle out. I have no idea how correct it is. ScriptSource source = engine.CreateScriptSourceFromString(import foo, SourceCodeKind.Statements); ScriptScope scriptScope = runtime.ExecuteSourceUnit(source); Scope scope = scriptScope.GetVariableScope(foo); PythonModule extension = (PythonModule)scope.GetExtension(scope.Language.ContextId); extension.TrueDivision = true; It looks like you can set this globally by doing something like this: ((IronPython.PythonEngineOptions)engine.Options).DivisionOptions = IronPython.PythonDivisionOptions.New; -- Curt Hagenlocher [EMAIL PROTECTED] ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] IP 2 Hosting
((IronPython.PythonEngineOptions)engine.Options).DivisionOptions = IronPython.PythonDivisionOptions.New; This worked! Thanks - it is for a simple embedding example which is a calculator. The winforms UI builds up expressions and the '=' button evaluates them with the Python engine. :-) Michael Curt Hagenlocher wrote: On Sat, Mar 29, 2008 at 10:51 AM, Michael Foord [EMAIL PROTECTED] wrote: Cool - I was just being rude. Hey, I feel your pain! I'd swear that I've rewritten more hosting code than I've written... Any ideas on switching on TrueDivision for the scope? This is what I was able to puzzle out. I have no idea how correct it is. ScriptSource source = engine.CreateScriptSourceFromString(import foo, SourceCodeKind.Statements); ScriptScope scriptScope = runtime.ExecuteSourceUnit(source); Scope scope = scriptScope.GetVariableScope(foo); PythonModule extension = (PythonModule)scope.GetExtension(scope.Language.ContextId); extension.TrueDivision = true; It looks like you can set this globally by doing something like this: ((IronPython.PythonEngineOptions)engine.Options).DivisionOptions = IronPython.PythonDivisionOptions.New; -- Curt Hagenlocher [EMAIL PROTECTED] ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] Snippets in Trackback
The snippets represent executable code that's generated dynamically by the DLR from your Python source. Do you have a small piece of sample code that reproduces the failure? On Sat, Mar 29, 2008 at 1:28 PM, Davy Mitchell [EMAIL PROTECTED] wrote: Hi All, IPY2.0 B1 Vista SP1 I keep seeing reference to 'Snippets' in IP Tracebacks on different bits of code. Can't find anything on codeplex so assume it *probably* something wrong this end. I don't have a 'Snippets' module AFAIK. Typical example C:\Code\OSProjectsipy wpf5.py Traceback (most recent call last): File Snippets, line unknown, in Initialize File PresentationFramework, line unknown, in Load Is it just me or :-) -- Davy Mitchell Blog - http://www.latedecember.co.uk/sites/personal/davy/ Twitter - http://twitter.com/daftspaniel Skype - daftspaniel needgod.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
