def function21():
class ListTest(list):<EOL><INDENT>"""<STR_LIT>"""<EOL>pass<EOL><DEDENT>test = ListTest()<EOL>test[None] = <NUM_LIT:0> <EOL>del test[None] <EOL>test[<NUM_LIT:0>] = <NUM_LIT:0> <EOL>del test[<NUM_LIT:0>]<EOL>
Set and delete on a subclass of list