Guido Van Rossum's keynote

- Python 2.5: September 12

- Python 3000: a new revision of the language

- Philosophy
	- Don't design a whole new language
	- Fix early design bugs
	- Allow incompatible changes within reason
	- Remove deprecated features
	- Consider the best feature going forward
- Process
	- Alpha release in 2007, final in 2008
	- Python 2.x to be supported in parallel, with some backports
- Changes
	- New keywords
	- Some "iterator objects" not lists
	- All strings Unicode
	- Binary I/O redesign
	- But not dict.keys rather than dict.keys(), change meaning of for-else, operator priorities
- Migration
	- Compiler can't; pychecker-like will help
	- Instrumented Python 2.x that warns of doomed code
- Basic cleanup
	- Kill classic classes
	- Exceptions must derive from BaseException
	- int/int = float
	- int = long
	- Absolute import by default
	- Kill ancient modules
- Some syntactic changes
	- repr(x) instead of `x`
	- except E1, E2 as err:
- Movement away from lists, toward iterators
	- list comprehensions become syntactic sugar for list(generator expression)
	- range() becomes xrange()
	- zip() becomes izip()
- lambda lives!
- strings
	- bytes and str instead of str and unicode
	- in 2.x, pure-ASCII strings are compatible with unicode
	- change I/O library
- print becomes a function
	- print(x,y,z,file=f)
- dict views instead of lists