code: def test_learn_predict_multiline():
      model = Workspace(quiet=True, cb_adf=True)
      ex = model.parse(["| a:1 b:0.5", "0:0.1:0.75 | a:0.5 b:1 c:2"])
      assert model.predict(ex) == [0.0, 0.0]
      model.finish_example(ex)
      ex = ["| a", "| b"]
      model.learn(ex)
      assert model.predict(ex) == [0.0, 0.0]
  
imports: import os
  from pathlib import Path
  import vowpalwabbit
  from vowpalwabbit import Workspace
  import pytest
  import warnings
  import filecmp
label_desc: Use image node_id 27 for calling a global function with example usage: test_learn_predict_multiline() without return types