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

[Wildemar Wildenburger]

Over the time I've seen lots of remarks about python that read like "a 
lot like lists in lisp" or "like the hashtable in java" or any other 
form of "like <feature> in <language>".

Are there any concepts that python has not borrowed, concepts that were 
not even inspired by other languages? I'm just interested if it is 
"merely" a best-of collection of language features or if there are 
actually inventions that have not - or hardly - existed in programming 
before python?

wildemar