In our GitOps ecosystem we use Weaveworks FluxCD and Terraform Controller to manage AWS resources using Terraform code. Recently, we wanted to deploy a few Python Lambda functions using the same GitOps workflow. The Lambda function code was stored in a separate subdirectory alongside the Terraform code that provisions the Lambda function. I attempted various methods to copy the Python code from the subdirectory into the Lambda function, but none were successful. Could you provide a working example of how to achieve this please?

  source = "terraform-aws-modules/lambda/aws"
  publish = true
  function_name = "my-test-lambda1"
  description   = "test lambda function"
  handler       = "index.lambda_handler"
  runtime       = "python3.8"

  source_path = "../code/lambda.py"

  tags = {
    Name = "my-test-lambda1"
  }
}

Error: exec: "python3": executable file not found in $PATH
  Warning  TFExecPlanFailed  10s  tf-controller  error running Plan: rpc error: code = Internal desc = exit status 1

Error: External Program Lookup Failed

  with module.lambda_function.data.external.archive_prepare[0],
  on .terraform/modules/lambda_function/package.tf line 10, in data "external" "archive_prepare":
  10:   program = [local.python, "${path.module}/package.py", "prepare"]