what has python added to programming languages? (lets be esoteric, shall we ; )

[BartlebyScrivener]

In the Tutorial, the BFDL says:

Strings can be subscripted (indexed); like in C, the first character of
a string has subscript (index) 0. There is no separate character type;
a character is simply a string of size one. Like in Icon, substrings
can be specified with the slice notation: two indices separated by a
colon.

http://www.python.org/doc/current/tut/node5.html#SECTION005120000000000000000