old_contents: from PLC.Faults import *
  from PLC.Method import Method
  from PLC.Parameter import Parameter, Mixed
  from PLC.Nodes import Node, Nodes
  from PLC.Slices import Slice, Slices
  from PLC.Auth import Auth
  
  class DeleteSliceFromNodes(Method):
      """
      Deletes the specified slice from the specified nodes. If the slice is
      not associated with a node, no errors are returned.
  
      Returns 1 if successful, faults otherwise.
      """
  
      roles = ['admin', 'pi', 'user']
  
      accepts = [
          Auth(),
         Mixed(Slice.fields['slice_id'],
                Slice.fields['name']),
          [Mixed(Node.fields['node_id'],
                 Node.fields['hostname'])]
          ]
  
      returns = Parameter(int, '1 if successful')
  
      def call(self, auth, slice_id_or_name, node_id_or_hostname_list):
          # Get slice information
          slices = Slices(self.api, [slice_id_or_name])
          if not slices:
              raise PLCInvalidArgument, "No such slice"
          slice = slices[0]
  
          if 'admin' not in self.caller['roles']:
              if self.caller['person_id'] in slice['person_ids']:
                  pass
              elif 'pi' not in self.caller['roles']:
                  raise PLCPermissionDenied, "Not a member of the specified slice"
              elif slice['site_id'] not in self.caller['site_ids']:
                  raise PLCPermissionDenied, "Specified slice not associated with any of your sites"
  
          # Remove slice from all nodes found
  
          # Get specified nodes
          nodes = Nodes(self.api, node_id_or_hostname_list)
          for node in nodes:
              if slice['peer_id'] is not None and node['peer_id'] is not None:
                  raise PLCPermissionDenied, "Not allowed to remove peer slice from peer node"
              if slice['slice_id'] in node['slice_ids']:
                  slice.remove_node(node, commit = False)
  
          slice.sync()
  
          self.event_objects = {'Node': [node['node_id'] for node in nodes],
                                'Slice': [slice['slice_id']]}
  
          return 1
  
new_contents: from PLC.Faults import *
  from PLC.Method import Method
  from PLC.Parameter import Parameter, Mixed
  from PLC.Nodes import Node, Nodes
  from PLC.Slices import Slice, Slices
  from PLC.Auth import Auth
  
  class DeleteSliceFromNodes(Method):
      """
      Deletes the specified slice from the specified nodes. If the slice is
      not associated with a node, no errors are returned.
  
      Returns 1 if successful, faults otherwise.
      """
  
      roles = ['admin', 'pi', 'user']
  
      accepts = [
          Auth(),
         Mixed(Slice.fields['slice_id'],
                Slice.fields['name']),
          [Mixed(Node.fields['node_id'],
                 Node.fields['hostname'])]
          ]
  
      returns = Parameter(int, '1 if successful')
  
      def call(self, auth, slice_id_or_name, node_id_or_hostname_list):
          # Get slice information
          slices = Slices(self.api, [slice_id_or_name])
          if not slices:
              raise PLCInvalidArgument, "No such slice"
          slice = slices[0]
  
          if slice['peer_id'] is not None:
              raise PLCInvalidArgument, "Not a local slice"
  
          if 'admin' not in self.caller['roles']:
              if self.caller['person_id'] in slice['person_ids']:
                  pass
              elif 'pi' not in self.caller['roles']:
                  raise PLCPermissionDenied, "Not a member of the specified slice"
              elif slice['site_id'] not in self.caller['site_ids']:
                  raise PLCPermissionDenied, "Specified slice not associated with any of your sites"
  
          # Remove slice from all nodes found
  
          # Get specified nodes
          nodes = Nodes(self.api, node_id_or_hostname_list)
          for node in nodes:
              if slice['peer_id'] is not None and node['peer_id'] is not None:
                  raise PLCPermissionDenied, "Not allowed to remove peer slice from peer node"
              if slice['slice_id'] in node['slice_ids']:
                  slice.remove_node(node, commit = False)
  
          slice.sync()
  
          self.event_objects = {'Node': [node['node_id'] for node in nodes],
                                'Slice': [slice['slice_id']]}
  
          return 1
  
subject: check that slice is local (like AddSliceToNodes does)