message: adding the license.
diff: +##
  + # Licensed under the Apache License, Version 2.0 (the "License");
  + # you may not use this file except in compliance with the License.
  + # You may obtain a copy of the License at
  + #
  + # http://www.apache.org/licenses/LICENSE-2.0
  + #
  + # Unless required by applicable law or agreed to in writing, software
  + # distributed under the License is distributed on an "AS IS" BASIS,
  + # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  + # See the License for the specific language governing permissions and
  + # limitations under the License.
  + ##
  +
  from pycylon.data.table import Table
  from pycylon.ctx.context import CylonContext
  import pandas as pd
  