old_contents: import plotly
  from plotly.graph_objs import *
  import plotly.tools as tls
  from nose.tools import raises
  
new_contents: import plotly
  from plotly.graph_objs import *
  import plotly.tools as tls
  from nose.tools import raises
  import numpy as np
  
  
  @raises(Exception)
  def test_wrong_kwarg():
      fig = tls.make_subplots(stuff='not gonna work')
  
  
  def test_two_arrow():
      expected = 2
      assert 1 == expected
  
subject: streamline test