def unique_contributors(nodes, node):
 for added_node in nodes:
  if (set(added_node['contributors']).intersection(node['contributors']) != set()):
   return False
 return True

def unique_contributors ( nodes , node ) : for added_node in nodes : if ( set ( added_node [ 'contributors' ] ) . intersection ( node [ 'contributors' ] ) != set ( ) ) : return False return True
projects in new and noteworthy should not have common contributors .