message: call next() the right way
diff: @@ -869,7 +869,7 @@ class HiveEngineSpec(PrestoEngineSpec):
  """Uploads a csv file and creates a superset datasource in Hive."""
  def get_column_names(filepath):
  with open(filepath, 'rb') as f:
  - return unicodecsv.reader(f, encoding='utf-8-sig').next()
  + return next(unicodecsv.reader(f, encoding='utf-8-sig'))
  table_name = form.name.data
  filename = form.csv_file.data.filename
  