old_contents: '''
  Alex Martelli's soulution for recursive dict update from
  http://stackoverflow.com/a/3233356
  '''
  
  # Import python libs
  import collections
  
  
  def update(d, u):
      for k, v in u.iteritems():
          if isinstance(v, collections.Mapping):
              r = update(d.get(k, {}), v)
              d[k] = r
          else:
              d[k] = u[k]
      return d
  
  
new_contents: '''
  Alex Martelli's soulution for recursive dict update from
  http://stackoverflow.com/a/3233356
  '''
  
  # Import python libs
  import collections
  
  
  def update(dest, upd):
      for key, val in upd.iteritems():
          if isinstance(val, collections.Mapping):
              ret = update(dest.get(key, {}), val)
              dest[key] = ret
          else:
              dest[key] = upd[key]
      return dest
  
subject: Fix PyLint C0103 on `salt.utils.dictupdate`. Refs #1775.