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6461 :: Nim embedded inside Python

• juancarlospaco (orginal) [2020-06-21T17:13:52+02:00] view original

  https://github.com/juancarlospaco/nimscript4python#nimscript4python

  Done after the talk of Nim Conf 2020.

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• juancarlospaco (orginal) [2020-09-01T05:28:22+02:00] view original

  
    $ echo "echo 42" > example.nims
    $ pip install nim4py==0c42da8
    $ python3.8
    >>> import nim4py
    >>> nim4py.nimscript("example.nims",
        ["/home/juan/.choosenim/toolchains/nim-1.3.5/lib/"])
    42
    >>>
  Run

  • https://pypi.org/project/nim4py

  :)

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• juancarlospaco (orginal) [2020-09-01T15:15:47+02:00] view original

  Any ideas how to implement a return from the interpreter?, something like simple JSON string API Nim<--->Python.

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• dsrw (orginal) [2020-09-01T18:34:48+02:00] view original

  If you call a specific proc, you get back a (PNode)[https://github.com/nim-lang/Nim/blob/version-1-2/compiler/ast.nim#L721], which you can get a value out of. Something like:

  import compiler / [nimeval]
  writeFile "script.nim", "proc main*: string = \"hello world\""
  let
    stdlib = findNimStdLibCompileTime()
    intr = createInterpreter("script.nim", [stdlib, stdlib & "core"])
  intr.evalScript()
  let val = intr.callRoutine(intr.selectRoutine("main"), []).strVal
  
  echo "Return val is: " & val
  Run

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