text: # Copyright 2021 Zilliz. All rights reserved.
  #
  # 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.
  
  
  class PandasExecution:
      """
      Execute operator on pandas DataFrame
      """
      def __dataframe_apply__(self, df):
          self.__check_init__()
          if isinstance(self._index[1], tuple):
              df[list(self._index[1])] = df.apply(self.__apply__,
                                                  axis=1,
                                                  result_type='expand')
          else:
              df[self._index[1]] = df.apply(self.__apply__, axis=1)
          return df
  
      def __dataframe_filter__(self, df):
          self.__check_init__()
          return df[self.__apply__(df)]
  