1a = "a\1b"
2print(len(a))
3print(ord(a[1]))
4print(len("a\123b"))
5a = "a\12345b"
6print(len(a))
7print(ord(a[1]))
8
9a = "a\xffb"
10print(len(a))
11print(ord(a[1]))
12