[Ironpython-users] How to bind a System.Type to a variable using scope.SetVariable?

[Markus Schaber]

Hi, Buckle,
I’m trying to do some guesswork, as I could not find a clear question in the first part.
I guess you’re using a “hosted” environment, where the IronPython interpreter is hosted in a C# / .NET application.
There’s the method DynamicHelpers.GetPythonTypeFromType(Type dotNetType) which creates a python class object for a .NET type.
We successfully used this to provide types (including enums) to IronPython scripts. You can either inject them directly into the script scope, or create an artificial module using ScriptEngine.CreateModule(string name) and populate its namespace with mymodule.SetVariable(name, value), which the script can then “import”.
Best regards

Markus Schaber

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From: Ironpython-users [mailto:ironpython-users-bounces+m.schaber=codesys.com at python.org] On Behalf Of buckle2000
Sent: Tuesday, March 22, 2016 5:42 PM
To: ironpython-users
Subject: [Ironpython-users] How to bind a System.Type to a variable using scope.SetVariable?

Hello everyone!
I want to bind a class in C# (or a System.Type) to a variable in IronPython using scope.SetVariable.
For example,
import System
math = System.Math
math.Sin(1) # this works
type(math) # IronPython.Runtime.Types.PythonType
But, I do not want to use "import xxx" due to security problems.
I want the "math" class, in this example, can be use instantly.

When I tried to do something like this in C#:
scope.SetVariable("math",typeof(System.Math));
then in python code
type(math) # Also IronPython.Runtime.Types.PythonType
See the attached source file for detailed info.

Something may be useful:
see IronPython.Modules.Builtin, which is also a static class like System.Math.
seems like IronPython binded it with "__builtins__" in python successfully, but I don't know how.

Another question: is there an easy way to disable users from importing modules like clr without using Code Access?
Also, how to bind a namespace in C# code, to a ironpython object, using IronPython C# assembly (so the "binding" code must be written in C#(.NET) code)?


2016-03-19
________________________________
buckle2000
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