Calling .Net code from Python Lambda - Is it possible

Question

Hello,

I am desperately looking for help on this. Using PythonNet package I am trying to call .Net code from a Python Lambda function. But while trying to deploy that to .Net Lambda I get the following error saying that it is unable to load the runtime.

Response
{
  "errorMessage": "Failed to create a .NET runtime (coreclr) using the
                parameters {}.",
  "errorType": "RuntimeError",
  "requestId": "",
  "stackTrace": [
    "  File "/var/lang/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
",
    "  File "", line 1030, in _gcd_import
",
    "  File "", line 1007, in _find_and_load
",
    "  File "", line 986, in _find_and_load_unlocked
",
    "  File "", line 680, in _load_unlocked
",
    "  File "", line 850, in exec_module
",
    "  File "", line 228, in _call_with_frames_removed
",

Thanks,
Haripriya

Answer

Thank you Cloud_G for the prompt reply. I am using .Net core 3.1
[assembly: TargetFramework(".NETCoreApp,Version=v3.1", FrameworkDisplayName = ".NET Core 3.1")]
Could you please help me with a sample Lambda that calls .Net code in Python or containerizing to include both run times and successfully executing the lambda?

Thanks,
Haripriya

Answer

Hello,

In short, yes you can run .NET code in lambda. It looks like you are trying to use the .NET core runtime which makes sense. What version of .NET are you using?
Have you looked at the doc below yet as well?
https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html

Calling .Net code from Python Lambda - Is it possible

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