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Pep 467: include memoryview, drop 2->3 conversion text #3660

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Pep 467: include memoryview, drop 2->3 conversion text #3660

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257f33b
PEP 467: ascii constructors removed
ethanfurman Dec 23, 2023
783c608
PEP 467: include reference to current iter-bytes thread
ethanfurman Dec 27, 2023
6afbac2
Merge branch 'main' of github.com:python/peps into main
ethanfurman Dec 27, 2023
9f5ceed
Merge branch 'main' of github.com:python/peps into main
ethanfurman Dec 28, 2023
68f8127
add discouraged use example
ethanfurman Dec 28, 2023
8253cf5
fix adjustment count
ethanfurman Dec 30, 2023
c9cc006
Update peps/pep-0467.rst
ethanfurman Dec 30, 2023
ce1b975
Merge branch 'main' of github.com:python/peps into pep-467
ethanfurman Feb 9, 2024
b48368d
include memoryview in proposal
ethanfurman Feb 9, 2024
8793e2a
Merge branch 'pep-467' of github.com:ethanfurman/peps into pep-467
ethanfurman Feb 9, 2024
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21 changes: 8 additions & 13 deletions peps/pep-0467.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,8 @@ This PEP proposes small adjustments to the APIs of the ``bytes`` and
* Add ``getbyte`` byte retrieval method
* Add ``iterbytes`` alternative iterator

The last two (``getbyte`` and ``iterbytes``) will also be added to ``memoryview``.

Rationale
=========

Expand All @@ -44,7 +46,7 @@ painful -- wire format protocols.
This area of programming is characterized by a mixture of binary data and
ASCII compatible segments of text (aka ASCII-encoded text). The addition of
the new constructors, methods, and iterators will aid both in writing new
wire format code, and in porting any remaining Python 2 wire format code.
wire format code, and in updating existing code.

Common use-cases include ``dbf`` and ``pdf`` file formats, ``email``
formats, and ``FTP`` and ``HTTP`` communications, among many others.
Expand Down Expand Up @@ -125,8 +127,8 @@ negative numbers. The documentation of the new methods will refer readers to
Addition of "getbyte" method to retrieve a single byte
------------------------------------------------------

This PEP proposes that ``bytes`` and ``bytearray`` gain the method ``getbyte``
which will always return ``bytes``::
This PEP proposes that ``bytes``, ``bytearray``, and ``memoryview`` gain the
method ``getbyte`` which will always return ``bytes``::

>>> b'abc'.getbyte(0)
b'a'
Expand All @@ -142,9 +144,9 @@ If an index is asked for that doesn't exist, ``IndexError`` is raised::
Addition of optimised iterator methods that produce ``bytes`` objects
---------------------------------------------------------------------

This PEP proposes that ``bytes`` and ``bytearray`` gain an optimised
``iterbytes`` method that produces length 1 ``bytes`` objects rather than
integers::
This PEP proposes that ``bytes``, ``bytearray``, and ``memoryview`` gain an
optimised ``iterbytes`` method that produces length 1 ``bytes`` objects rather
than integers::

for x in data.iterbytes():
# x is a length 1 ``bytes`` object, rather than an integer
Expand Down Expand Up @@ -205,13 +207,6 @@ Developers that use this method frequently will instead have the option to
define their own ``bchr = bytes.fromint`` aliases.


Scope limitation: memoryview
----------------------------

Updating ``memoryview`` with the new item retrieval methods is outside the scope
of this PEP.


References
==========

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