I am new to Python.Net and trying to convert an application that used
IronPython to embed a Python environment into a .Net application and allow the
user to run Python scripts inside our application. The part that embeds the
Python environment is VB.Net (but could be C# if that would be better).
I am running into problems setting variables in the scope such that they can be
used in the Python scripts we call. I keep getting an error: NameError: global
name 'Bridge' is not defined.
This is the VB code I am trying to use:
PythonEngine.Initialize()
Using (Py.GIL())
Dim moduleName As String = "PrintToBridge"
Dim pythonCommandLine As String = "Not used yet"
Dim scope As PyScope = Py.CreateScope()
Try
scope.Set("Bridge", bridge)
scope.Set("SetupParams", cmdLine)
Dim script As Object = scope.Import(moduleName)
bridge.mm.PrintMsg("Scope has Bridge:" +
Str(scope.Contains("Bridge")))
script.Startup(pythonCommandLine)
Finally
scope.Dispose()
End Try
End Using
The Python script:
def Startup(param):
Bridge.mm.PrintMsg('Startup called')
def Docommand(param):
Bridge.mm.PrintMsg('docommand called')
def Shutdown():
Bridge.mm.PrintMsg('Shutdown called')
How can I set a variable such that it would be recognized by the called Python
script? Importing the script works, I can force python-y things to happen.
And the check to see if the object I want is in scope returns true. But it
still isn't available in Python.
I have tried scope.Eval(moduleName + ".Startup('" + pythonCommandLine + "')")
and Exec() with locals:
Dim locals As PyDict = New PyDict()
locals.SetItem("Bridge".ToPython(), bridge.ToPython())
scope.Exec(moduleName + ".Startup('" + pythonCommandLine +
"')", locals)
All with the same effect. Any ideas on how to get set variables so scripts can
gain access to them?
Thanks,
Steve
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