Closes #23181: codepoint -> code point

This commit is contained in:
Georg Brandl 2015-01-14 08:26:30 +01:00
parent 1a8ada89f9
commit 3be472b5f7
7 changed files with 18 additions and 18 deletions

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@ -1141,7 +1141,7 @@ These are the UTF-32 codec APIs:
mark (U+FEFF). In the other two modes, no BOM mark is prepended.
If *Py_UNICODE_WIDE* is not defined, surrogate pairs will be output
as a single codepoint.
as a single code point.
Return *NULL* if an exception was raised by the codec.

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@ -841,7 +841,7 @@ methods and attributes from the underlying stream.
Encodings and Unicode
---------------------
Strings are stored internally as sequences of codepoints in
Strings are stored internally as sequences of code points in
range ``0x0``-``0x10FFFF``. (See :pep:`393` for
more details about the implementation.)
Once a string object is used outside of CPU and memory, endianness
@ -852,23 +852,23 @@ There are a variety of different text serialisation codecs, which are
collectivity referred to as :term:`text encodings <text encoding>`.
The simplest text encoding (called ``'latin-1'`` or ``'iso-8859-1'``) maps
the codepoints 0-255 to the bytes ``0x0``-``0xff``, which means that a string
object that contains codepoints above ``U+00FF`` can't be encoded with this
the code points 0-255 to the bytes ``0x0``-``0xff``, which means that a string
object that contains code points above ``U+00FF`` can't be encoded with this
codec. Doing so will raise a :exc:`UnicodeEncodeError` that looks
like the following (although the details of the error message may differ):
``UnicodeEncodeError: 'latin-1' codec can't encode character '\u1234' in
position 3: ordinal not in range(256)``.
There's another group of encodings (the so called charmap encodings) that choose
a different subset of all Unicode code points and how these codepoints are
a different subset of all Unicode code points and how these code points are
mapped to the bytes ``0x0``-``0xff``. To see how this is done simply open
e.g. :file:`encodings/cp1252.py` (which is an encoding that is used primarily on
Windows). There's a string constant with 256 characters that shows you which
character is mapped to which byte value.
All of these encodings can only encode 256 of the 1114112 codepoints
All of these encodings can only encode 256 of the 1114112 code points
defined in Unicode. A simple and straightforward way that can store each Unicode
code point, is to store each codepoint as four consecutive bytes. There are two
code point, is to store each code point as four consecutive bytes. There are two
possibilities: store the bytes in big endian or in little endian order. These
two encodings are called ``UTF-32-BE`` and ``UTF-32-LE`` respectively. Their
disadvantage is that if e.g. you use ``UTF-32-BE`` on a little endian machine you

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@ -194,7 +194,7 @@ Here are the classes:
minor type and defaults to :mimetype:`plain`. *_charset* is the character
set of the text and is passed as an argument to the
:class:`~email.mime.nonmultipart.MIMENonMultipart` constructor; it defaults
to ``us-ascii`` if the string contains only ``ascii`` codepoints, and
to ``us-ascii`` if the string contains only ``ascii`` code points, and
``utf-8`` otherwise. The *_charset* parameter accepts either a string or a
:class:`~email.charset.Charset` instance.

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@ -156,7 +156,7 @@ are always available. They are listed here in alphabetical order.
.. function:: chr(i)
Return the string representing a character whose Unicode codepoint is the
Return the string representing a character whose Unicode code point is the
integer *i*. For example, ``chr(97)`` returns the string ``'a'``, while
``chr(931)`` returns the string ``'Σ'``. This is the inverse of :func:`ord`.

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@ -33,12 +33,12 @@ This module defines four dictionaries, :data:`html5`,
.. data:: name2codepoint
A dictionary that maps HTML entity names to the Unicode codepoints.
A dictionary that maps HTML entity names to the Unicode code points.
.. data:: codepoint2name
A dictionary that maps Unicode codepoints to HTML entity names.
A dictionary that maps Unicode code points to HTML entity names.
.. rubric:: Footnotes

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@ -685,7 +685,7 @@ the same type, the lexicographical comparison is carried out recursively. If
all items of two sequences compare equal, the sequences are considered equal.
If one sequence is an initial sub-sequence of the other, the shorter sequence is
the smaller (lesser) one. Lexicographical ordering for strings uses the Unicode
codepoint number to order individual characters. Some examples of comparisons
code point number to order individual characters. Some examples of comparisons
between sequences of the same type::
(1, 2, 3) < (1, 2, 4)

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@ -228,7 +228,7 @@ Functionality
Changes introduced by :pep:`393` are the following:
* Python now always supports the full range of Unicode codepoints, including
* Python now always supports the full range of Unicode code points, including
non-BMP ones (i.e. from ``U+0000`` to ``U+10FFFF``). The distinction between
narrow and wide builds no longer exists and Python now behaves like a wide
build, even under Windows.
@ -246,7 +246,7 @@ Changes introduced by :pep:`393` are the following:
so ``'\U0010FFFF'[0]`` now returns ``'\U0010FFFF'`` and not ``'\uDBFF'``;
* all other functions in the standard library now correctly handle
non-BMP codepoints.
non-BMP code points.
* The value of :data:`sys.maxunicode` is now always ``1114111`` (``0x10FFFF``
in hexadecimal). The :c:func:`PyUnicode_GetMax` function still returns
@ -258,13 +258,13 @@ Changes introduced by :pep:`393` are the following:
Performance and resource usage
------------------------------
The storage of Unicode strings now depends on the highest codepoint in the string:
The storage of Unicode strings now depends on the highest code point in the string:
* pure ASCII and Latin1 strings (``U+0000-U+00FF``) use 1 byte per codepoint;
* pure ASCII and Latin1 strings (``U+0000-U+00FF``) use 1 byte per code point;
* BMP strings (``U+0000-U+FFFF``) use 2 bytes per codepoint;
* BMP strings (``U+0000-U+FFFF``) use 2 bytes per code point;
* non-BMP strings (``U+10000-U+10FFFF``) use 4 bytes per codepoint.
* non-BMP strings (``U+10000-U+10FFFF``) use 4 bytes per code point.
The net effect is that for most applications, memory usage of string
storage should decrease significantly - especially compared to former