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An overload with a parameter of type object is not used #811
Description
Environment
- Pythonnet version: 2.3.0
- Python version: 3.6
- Operating System: Win 10 x64 1809
Details
I am trying to get Python call my C# method, which has a parameter of type object with an instance of Python's KeyError.
var o = overloaded.ToPython();
dynamic callWithSelf = PythonEngine.Eval("lambda o: o.ObjOrClass(KeyError())");
callWithSelf(o);Where ObjOrClass definition is: public void ObjOrClass(object _) => this.Value = Object;. The actual function body here is not important.
- Error:
Python.Runtime.PythonException : TypeError : No method matches given arguments for ObjOrClass
Possibly related:
Thoughs
IMHO, Python.NET should create a PyObject and pass it here.
Activity
added a regression test for pythonnet#881
when converting to object, wrap values of unknown type into PyObject …
provide detailed error message, when an overload can't be found when …
filmor commentedon Mar 6, 2019
Yes, it's a possibility to do that. The issue at hand is probably, that Python objects do not derive from
System.Objectand can thus not match the overload. Can you prepare a PR?lostmsu commentedon Apr 14, 2019
@filmor I am not sure I understood your comment. You can see my fix in the commit e9712b4 above. This change is potentially backwards-incompatible in case there's a .NET method with two overloads, one having parameter type
object, and anotherPyObjectfor some parameter.filmor commentedon Apr 23, 2019
I'll need to look into this, could you make a PR from this commit?
added a regression test for pythonnet#881
when converting to object, wrap values of unknown type into PyObject …
provide detailed error message, when an overload can't be found when …
Improve "No method matches given arguments" message with more details (…
added a regression test for pythonnet#881
when converting to object, wrap values of unknown type into PyObject …
added a regression test for pythonnet#881
when converting to object, wrap values of unknown type into PyObject …
Enable C# parameters of type `object` accept any argument, passed fro…
Improve "No constructor matches given arguments" message with more de…
Improve "No constructor matches given arguments" message with more de…
Enable C# parameters of type `object` accept any argument, passed fro…
Improve "No method matches given arguments" message with more details (…
Enable C# parameters of type `object` accept any argument, passed fro…
Improve "No constructor matches given arguments" message with more de…
Enable C# parameters of type `object` accept any argument, passed fro…