parameters: (self, tree)
return_statement: return thiskeys.isdisjoint(frozenset(tree.keys()))
docstring: x.isdisjoint(S) ->  True if x has a null intersection with tree
docstring_summary: x.isdisjoint(S) ->  True if x has a null intersection with tree
docstring_tokens: x . isdisjoint ( S ) - > True if x has a null intersection with tree
function: def isdisjoint(self, tree):
          """ x.isdisjoint(S) ->  True if x has a null intersection with tree """
          thiskeys = frozenset(self.keys())
          return thiskeys.isdisjoint(frozenset(tree.keys()))
function_tokens: def isdisjoint ( self , tree ) : thiskeys = frozenset ( self . keys ( ) ) return thiskeys . isdisjoint ( frozenset ( tree . keys ( ) ) )