code: def test_sigmoid_expr():
      expr = ast.SigmoidExpr(ast.NumVal(2.0))
  
      expected_code = """
  let private sigmoid x =
      let z = exp x
      match x with
          | i when i < 0.0 -> z / (1.0 + z)
          | _ -> 1.0 / (1.0 + exp (-x))
  let score (input : double list) =
      sigmoid (2.0)
  """
  
      interpreter = FSharpInterpreter()
      assert_code_equal(interpreter.interpret(expr), expected_code)
  
imports: from itertools import product
  import pytest
  from m2cgen import ast
  from m2cgen.interpreters import FSharpInterpreter
  from tests.utils import assert_code_equal
label_desc: Use image node_id 24 for calling a global function with example usage: test_sigmoid_expr() without return types