[Python-checkins] cpython: What's new in Python 3.3: Rephrase PEP 393 doc
victor.stinner
python-checkins at python.org
Mon Nov 21 13:12:30 CET 2011
http://hg.python.org/cpython/rev/b195bfb681e0
changeset: 73660:b195bfb681e0
user: Victor Stinner <victor.stinner at haypocalc.com>
date: Mon Nov 21 13:14:43 2011 +0100
summary:
What's new in Python 3.3: Rephrase PEP 393 doc
files:
Doc/whatsnew/3.3.rst | 79 +++++++++++++++++--------------
1 files changed, 43 insertions(+), 36 deletions(-)
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -580,8 +580,9 @@
* Thanks to the :pep:`393`, some operations on Unicode strings has been optimized:
* the memory footprint is divided by 2 to 4 depending on the text
+ * encode an ASCII string to UTF-8 doesn't need to encode characters anymore,
+ the UTF-8 representation is shared with the ASCII representation
* getting a substring of a latin1 strings is 4 times faster
- * TODO
Build and C API Changes
@@ -591,25 +592,30 @@
* The :pep:`393` added new Unicode types, macros and functions:
- * Py_UCS1, Py_UCS2, Py_UCS4 types
- * PyASCIIObject and PyCompactUnicodeObject structures
- * :c:func:`PyUnicode_New`
- * :c:macro:`PyUnicode_READY`
- * :c:func:`PyUnicode_FromKindAndData`
- * :c:func:`PyUnicode_GetLength`, :c:macro:`PyUnicode_GET_LENGTH`
- * :c:func:`PyUnicode_CopyCharacters`
- * :c:func:`PyUnicode_ReadChar`, :c:func:`PyUnicode_WriteChar`
- * :c:func:`PyUnicode_AsUCS4`, :c:func:`PyUnicode_AsUCS4Copy`
- * :c:func:`PyUnicode_FindChar`
- * :c:func:`PyUnicode_Substring`
- * :c:macro:`PyUnicode_1BYTE_DATA`, :c:macro:`PyUnicode_2BYTE_DATA`,
- :c:macro:`PyUnicode_4BYTE_DATA`
- * :c:macro:`PyUnicode_KIND` with :c:type:`PyUnicode_Kind` enum:
- :c:data:`PyUnicode_WCHAR_KIND`, :c:data:`PyUnicode_1BYTE_KIND`,
- :c:data:`PyUnicode_2BYTE_KIND`, :c:data:`PyUnicode_4BYTE_KIND`
- * :c:macro:`PyUnicode_DATA`
- * :c:macro:`PyUnicode_READ`, :c:macro:`PyUnicode_READ_CHAR`, :c:macro:`PyUnicode_WRITE`
- * :c:macro:`PyUnicode_MAX_CHAR_VALUE`
+ * High-level API:
+
+ * :c:func:`PyUnicode_CopyCharacters`
+ * :c:func:`PyUnicode_FindChar`
+ * :c:func:`PyUnicode_GetLength`, :c:macro:`PyUnicode_GET_LENGTH`
+ * :c:func:`PyUnicode_New`
+ * :c:func:`PyUnicode_Substring`
+ * :c:func:`PyUnicode_ReadChar`, :c:func:`PyUnicode_WriteChar`
+
+ * Low-level API:
+
+ * :c:type:`Py_UCS1`, :c:type:`Py_UCS2`, :c:type:`Py_UCS4` types
+ * :c:type:`PyASCIIObject` and :c:type:`PyCompactUnicodeObject` structures
+ * :c:macro:`PyUnicode_READY`
+ * :c:func:`PyUnicode_FromKindAndData`
+ * :c:func:`PyUnicode_AsUCS4`, :c:func:`PyUnicode_AsUCS4Copy`
+ * :c:macro:`PyUnicode_DATA`, :c:macro:`PyUnicode_1BYTE_DATA`,
+ :c:macro:`PyUnicode_2BYTE_DATA`, :c:macro:`PyUnicode_4BYTE_DATA`
+ * :c:macro:`PyUnicode_KIND` with :c:type:`PyUnicode_Kind` enum:
+ :c:data:`PyUnicode_WCHAR_KIND`, :c:data:`PyUnicode_1BYTE_KIND`,
+ :c:data:`PyUnicode_2BYTE_KIND`, :c:data:`PyUnicode_4BYTE_KIND`
+ * :c:macro:`PyUnicode_READ`, :c:macro:`PyUnicode_READ_CHAR`, :c:macro:`PyUnicode_WRITE`
+ * :c:macro:`PyUnicode_MAX_CHAR_VALUE`
+
Unsupported Operating Systems
@@ -643,21 +649,6 @@
The :c:type:`Py_UNICODE` has been deprecated by the :pep:`393` and will be
removed in Python 4. All functions using this type are deprecated:
-Functions and macros manipulating Py_UNICODE* strings:
-
- * :c:macro:`Py_UNICODE_strlen`: use :c:func:`PyUnicode_GetLength` or
- :c:macro:`PyUnicode_GET_LENGTH`
- * :c:macro:`Py_UNICODE_strcat`: use :c:func:`PyUnicode_CopyCharacters` or
- :c:func:`PyUnicode_FromFormat`
- * :c:macro:`Py_UNICODE_strcpy`, :c:macro:`Py_UNICODE_strncpy`,
- :c:macro:`Py_UNICODE_COPY`: use :c:func:`PyUnicode_CopyCharacters` or
- :c:func:`PyUnicode_Substring`
- * :c:macro:`Py_UNICODE_strcmp`: use :c:func:`PyUnicode_Compare`
- * :c:macro:`Py_UNICODE_strncmp`: use :c:func:`PyUnicode_Tailmatch`
- * :c:macro:`Py_UNICODE_strchr`, :c:macro:`Py_UNICODE_strrchr`: use
- :c:func:`PyUnicode_FindChar`
- * :c:macro:`Py_UNICODE_FILL`
-
Unicode functions and methods using :c:type:`Py_UNICODE` and
:c:type:`Py_UNICODE*` types:
@@ -675,11 +666,27 @@
* :c:func:`PyUnicode_AsUnicodeCopy`: use :c:func:`PyUnicode_AsUCS4Copy`,
:c:func:`PyUnicode_AsWideCharString` or :c:func:`PyUnicode_Copy`
+Functions and macros manipulating Py_UNICODE* strings:
+
+ * :c:macro:`Py_UNICODE_strlen`: use :c:func:`PyUnicode_GetLength` or
+ :c:macro:`PyUnicode_GET_LENGTH`
+ * :c:macro:`Py_UNICODE_strcat`: use :c:func:`PyUnicode_CopyCharacters` or
+ :c:func:`PyUnicode_FromFormat`
+ * :c:macro:`Py_UNICODE_strcpy`, :c:macro:`Py_UNICODE_strncpy`,
+ :c:macro:`Py_UNICODE_COPY`: use :c:func:`PyUnicode_CopyCharacters` or
+ :c:func:`PyUnicode_Substring`
+ * :c:macro:`Py_UNICODE_strcmp`: use :c:func:`PyUnicode_Compare`
+ * :c:macro:`Py_UNICODE_strncmp`: use :c:func:`PyUnicode_Tailmatch`
+ * :c:macro:`Py_UNICODE_strchr`, :c:macro:`Py_UNICODE_strrchr`: use
+ :c:func:`PyUnicode_FindChar`
+ * :c:macro:`Py_UNICODE_FILL`
+
Encoders:
* :c:func:`PyUnicode_Encode`: use :c:func:`PyUnicode_AsEncodedObject`
* :c:func:`PyUnicode_EncodeUTF7`
- * :c:func:`PyUnicode_EncodeUTF8`: use :c:func:`PyUnicode_AsUTF8String`
+ * :c:func:`PyUnicode_EncodeUTF8`: use :c:func:`PyUnicode_AsUTF8` or
+ :c:func:`PyUnicode_AsUTF8String`
* :c:func:`PyUnicode_EncodeUTF32`
* :c:func:`PyUnicode_EncodeUTF16`
* :c:func:`PyUnicode_EncodeUnicodeEscape:` use
--
Repository URL: http://hg.python.org/cpython
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