A.(x for x in range(10))B.[x for x in range(10)]C.generator(x for x in range(10))D.yield(x for x in range(10))
A.str.replace(char,’’)B.str.remove(char)C.str.delete(char)D.del str[char]
A.len(list)B.list.length()C.list.size()D.list.len()