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Description
Environment
- Pythonnet version: 3.0.0 preview
- Python version: 3.8 win32
- Operating System: Windows
- .NET Runtime: .NET 5
Summary
If there is a callback from .NET to Python, and the Python code raises a .NET type exception, instead of the corresponding real .NET exception was rethrown on the .NET side (after marshalling), always Python.Runtime.PythonException is thrown.
Details
.NET snippet
class Foo
{
public static void Bar(Action action)
{
try
{
action.Invoke();
Console.WriteLine("No exception.");
}
catch (NullReferenceException)
{
Console.WriteLine("Null reference caught.");
}
catch (Exception ex)
{
Console.WriteLine("General exception caught: " + ex.GetType().Type);
}
}
}Python snippet
# .NET imports
from System import NullReferenceException, Action
from MyProgram import Foo
# Preparation
def call():
raise NullReferenceException()
action = Action(call)
# Action
Foo.Bar(action)Expected output:
Null reference caught.
Actual output:
General exception caught: Python.Runtime.PythonException
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