old_contents: from lightning import Lightning
  from numpy import random, ceil, array
  
  lgn = Lightning()
  
  values = random.randn(100)
  
  lgn.histogram(values)
new_contents: from lightning import Lightning
  from numpy import random
  
  lgn = Lightning()
  
  values = random.randn(100)
  
  lgn.histogram(values)
subject: Fix example