new_contents: import vaex
  
  
  def test_from_dict():
      data = {'A': [1, 2, 3], 'B': ['a', 'b', 'c']}
      ds = vaex.from_dict(data)
      assert 'A' in ds.get_column_names()
      assert ds[0][0] == 1
      assert ds[0][1] == b'a'
  
subject: test from_dict