What is unique about Python?

[Szabolcs Nagy]

i don't know if they are unique, but my favourite features are:

readable and short code (consistent syntax, few keywords)
iterpreter (very useful for learning)
dir(obj) / vars(obj) (very useful for learning)
identation
dynamic typing
lightweight oo (no public/protected/private)
built-in types (list, dict, str have useful methods)
iterator protocol
generators (yield syntax)
list comprehension / generator expression
keyword args
slicing
tuple assignment (unpacking tuple: a,b =1,2)
return with multiple values (tuple makes it easy)
widespread (it's easy to find a python module for any kind of task)
extendible with low-level languages (pyrex/swig/boostpython)
crossplatform
free

nszabolcs