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| -rw-r--r-- | Misc/NEWS | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -3,6 +3,18 @@ What's New in Python 2.2a0? Core +- Dictionary objects now support the "in" operator: "x in dict" means + the same as dict.has_key(x). + +- Iterators were added; this is a generalized way of providing values + to a for loop. See PEP 234. There's a new built-in function iter() + to return an iterator. There's a new protocol to get the next value + from an iterator using the next() method (in Python) or the + tp_iternext slot (in C). There's a new protocol to get iterators + using the __iter__() method (in Python) or the tp_iter slot (in C). + Iterating (i.e. a for loop) over a dictionary generates its keys. + Iterating over a file generates its lines. + - The following functions were generalized to work nicely with iterator arguments: list() |