#NEWLINE# def test_node_tuple_issue( self ) : #NEWLINE# #INDENT# H = self . G ( ) #NEWLINE# assert_raises ( nx . NetworkXError , H . remove_node , ( 1 , 2 ) ) #NEWLINE# H . remove_nodes_from ( [ ( 1 , 2 ) ] ) #NEWLINE# assert_raises ( nx . NetworkXError , H . neighbors , ( 1 , 2 ) )