.. seealso::
- :pep:`0255` - Simple Generators
+ :pep:`255` - Simple Generators
The proposal for adding generators and the :keyword:`yield` statement to Python.
- :pep:`0342` - Coroutines via Enhanced Generators
+ :pep:`342` - Coroutines via Enhanced Generators
The proposal to enhance the API and syntax of generators, making them
usable as simple coroutines.
- :pep:`0380` - Syntax for Delegating to a Subgenerator
+ :pep:`380` - Syntax for Delegating to a Subgenerator
The proposal to introduce the :token:`yield_from` syntax, making delegation
to sub-generators easy.
Integers
--------
-* :pep:`0237`: Essentially, :class:`long` renamed to :class:`int`.
+* :pep:`237`: Essentially, :class:`long` renamed to :class:`int`.
That is, there is only one built-in integral type, named
:class:`int`; but it behaves mostly like the old :class:`long` type.
-* :pep:`0238`: An expression like ``1/2`` returns a float. Use
+* :pep:`238`: An expression like ``1/2`` returns a float. Use
``1//2`` to get the truncating behavior. (The latter syntax has
existed for years, at least since Python 2.2.)
* Dictionary comprehensions: ``{k: v for k, v in stuff}`` means the
same thing as ``dict(stuff)`` but is more flexible. (This is
- :pep:`0274` vindicated. :-)
+ :pep:`274` vindicated. :-)
* Set literals, e.g. ``{1, 2}``. Note that ``{}`` is an empty
dictionary; use ``set()`` for an empty set. Set comprehensions are
* The only acceptable syntax for relative imports is :samp:`from .[{module}]
import {name}`. All :keyword:`import` forms not starting with ``.`` are
- interpreted as absolute imports. (:pep:`0328`)
+ interpreted as absolute imports. (:pep:`328`)
* Classic classes are gone.
* Many old modules were removed. Some, like :mod:`gopherlib` (no
longer used) and :mod:`md5` (replaced by :mod:`hashlib`), were
- already deprecated by :pep:`0004`. Others were removed as a result
+ already deprecated by :pep:`4`. Others were removed as a result
of the removal of support for various platforms such as Irix, BeOS
- and Mac OS 9 (see :pep:`0011`). Some modules were also selected for
+ and Mac OS 9 (see :pep:`11`). Some modules were also selected for
removal in Python 3.0 due to lack of use or because a better
replacement exists. See :pep:`3108` for an exhaustive list.
externally maintained at https://www.jcea.es/programacion/pybsddb.htm.
* Some modules were renamed because their old name disobeyed
- :pep:`0008`, or for various other reasons. Here's the list:
+ :pep:`8`, or for various other reasons. Here's the list:
======================= =======================
Old Name New Name
The APIs for raising and catching exception have been cleaned up and
new powerful features added:
-* :pep:`0352`: All exceptions must be derived (directly or indirectly)
+* :pep:`352`: All exceptions must be derived (directly or indirectly)
from :exc:`BaseException`. This is the root of the exception
hierarchy. This is not new as a recommendation, but the
*requirement* to inherit from :exc:`BaseException` is new. (Python