old_contents: import numpy as np
  from numpy.random import rand
  from conftest import skipif_yask
  
  import numpy as np
  
  # Checking for bug in numpy.dot
  # https://github.com/ContinuumIO/anaconda-issues/issues/7457
  
  # If you run into this bug then try:
  #  conda install numpy nomkl
  v = rand(1000).astype(np.float64)
  assert np.isclose(np.dot(v, v), (v*v).sum())
  
  v = rand(1000).astype(np.float32)
  assert np.isclose(np.dot(v, v), (v*v).sum())
  
  
new_contents: import numpy as np
  from numpy.random import rand
  
  # Checking for bug in numpy.dot
  # https://github.com/ContinuumIO/anaconda-issues/issues/7457
  
  # If you run into this bug then try:
  #  conda install numpy nomkl
  v = rand(1000).astype(np.float64)
  assert np.isclose(np.dot(v, v), (v*v).sum())
  
  v = rand(1000).astype(np.float32)
  assert np.isclose(np.dot(v, v), (v*v).sum())
  
subject: fix flake8 issues