- Classes listed in an 'except' clause must inherit from BaseException.
- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
- and .keys(), .items(), .values() return dict views.
+ and .keys(), .items(), .values() return dict views, which behave
+ like sets.
- PEP 3105: print is now a function. Also (not in the PEP) the
'softspace' attribute of files is now gone (since print() doesn't use
- Remove C API support for restricted execution.
-- zip returns an iterator
+- zip(), map() and filter() now return iterators, behaving like their
+ itertools counterparts. This also affect map()'s behavior on
+ sequences of unequal length -- it now stops after the shortest one
+ is exhausted.
- Additions:
- set literals, ellipsis literal
+ set literals, set comprehensions, ellipsis literal.
- Added class decorators per PEP 3129.