old_contents: #
  # Copyright 2016 Crown Copyright
  #
  # 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.
  #
  
  import sys
  
  import gaffer as g
  
  if __name__ == "__main__":
      if len(sys.argv) < 2:
          raise TypeError('JSON str argument is required')
  
      json_str = sys.argv[1]
      if len(sys.argv) > 2:
          class_name = sys.argv[2]
          validate = False
      else:
          class_name = None
          validate = True
  
      pythonObj = g.JsonConverter.from_json(json_str,
                                            class_name=class_name,
                                            validate=validate, )
      if not isinstance(pythonObj, g.ToCodeString):
          raise TypeError('Unable to convert JSON to a Python: ' + json_str)
  
      print(pythonObj.to_code_string())
  
new_contents: #
  # Copyright 2016 Crown Copyright
  #
  # 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.
  #
  
  import sys
  
  import gaffer as g
  
  if __name__ == "__main__":
      if len(sys.argv) < 2:
          raise TypeError('JSON str argument is required')
  
      json_str = sys.argv[1]
      if len(sys.argv) > 2:
          class_name = sys.argv[2]
      else:
          class_name = None
  
      pythonObj = g.JsonConverter.from_json(json_str,
                                            class_name=class_name)
      if not isinstance(pythonObj, g.ToCodeString):
          raise TypeError('Unable to convert JSON to a Python: ' + json_str)
  
      print(pythonObj.to_code_string())
  
subject: Disable validation in fromJson python script