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author | Benjamin Peterson <benjamin@python.org> | 2008-11-30 22:46:23 (GMT) |
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committer | Benjamin Peterson <benjamin@python.org> | 2008-11-30 22:46:23 (GMT) |
commit | 4469d0ca565d82af241926b5bde67b48fb4b844f (patch) | |
tree | 28afe19b30a147fc2b032dd12b42cfcca5821244 /Doc/c-api/arg.rst | |
parent | 1742e401c4d76754e901e5cb2e4e9db86964999c (diff) | |
download | cpython-4469d0ca565d82af241926b5bde67b48fb4b844f.zip cpython-4469d0ca565d82af241926b5bde67b48fb4b844f.tar.gz cpython-4469d0ca565d82af241926b5bde67b48fb4b844f.tar.bz2 |
Merged revisions 67348,67355,67359,67362,67364-67365,67367-67368,67398,67423-67424,67432,67440-67441,67444-67445,67454-67455,67457-67458 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r67348 | benjamin.peterson | 2008-11-22 20:09:41 -0600 (Sat, 22 Nov 2008) | 1 line
raise a better error
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r67355 | georg.brandl | 2008-11-23 13:17:25 -0600 (Sun, 23 Nov 2008) | 2 lines
#4392: fix parameter name.
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r67359 | georg.brandl | 2008-11-23 15:57:30 -0600 (Sun, 23 Nov 2008) | 2 lines
#4399: fix typo.
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r67362 | gregory.p.smith | 2008-11-23 18:41:43 -0600 (Sun, 23 Nov 2008) | 2 lines
Document PY_SSIZE_T_CLEAN for PyArg_ParseTuple.
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r67364 | benjamin.peterson | 2008-11-23 19:16:29 -0600 (Sun, 23 Nov 2008) | 2 lines
replace reference to debugger-hooks
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r67365 | benjamin.peterson | 2008-11-23 22:09:03 -0600 (Sun, 23 Nov 2008) | 1 line
#4396 make the parser module correctly validate the with syntax
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r67367 | georg.brandl | 2008-11-24 10:16:07 -0600 (Mon, 24 Nov 2008) | 2 lines
Fix typo.
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r67368 | georg.brandl | 2008-11-24 13:56:47 -0600 (Mon, 24 Nov 2008) | 2 lines
#4404: make clear what "path" is.
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r67398 | benjamin.peterson | 2008-11-26 11:39:17 -0600 (Wed, 26 Nov 2008) | 1 line
fix typo in sqlite3 docs
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r67423 | jesse.noller | 2008-11-28 12:59:35 -0600 (Fri, 28 Nov 2008) | 2 lines
issue4238: bsd support for cpu_count
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r67424 | christian.heimes | 2008-11-28 13:33:33 -0600 (Fri, 28 Nov 2008) | 1 line
Retain copyright of processing examples. This was requested by a Debian maintainer during packaging of the multiprocessing package for 2.4/2.5
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r67432 | benjamin.peterson | 2008-11-28 17:18:46 -0600 (Fri, 28 Nov 2008) | 1 line
SVN format 9 is the same it seems
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r67440 | jeremy.hylton | 2008-11-28 17:42:59 -0600 (Fri, 28 Nov 2008) | 4 lines
Move definition int sval into branch of ifdef where it is used.
Otherwise, you get a warning about an undefined variable.
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r67441 | jeremy.hylton | 2008-11-28 18:09:16 -0600 (Fri, 28 Nov 2008) | 2 lines
Reflow long lines.
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r67444 | amaury.forgeotdarc | 2008-11-28 20:03:32 -0600 (Fri, 28 Nov 2008) | 2 lines
Fix a small typo in docstring
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r67445 | benjamin.peterson | 2008-11-29 21:07:33 -0600 (Sat, 29 Nov 2008) | 1 line
StringIO.close() stops you from using the buffer, too
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r67454 | benjamin.peterson | 2008-11-30 08:43:23 -0600 (Sun, 30 Nov 2008) | 1 line
note the version that works
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r67455 | martin.v.loewis | 2008-11-30 13:28:27 -0600 (Sun, 30 Nov 2008) | 1 line
Issue #4365: Add crtassem.h constants to the msvcrt module.
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r67457 | christian.heimes | 2008-11-30 15:16:28 -0600 (Sun, 30 Nov 2008) | 1 line
w# requires Py_ssize_t
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r67458 | benjamin.peterson | 2008-11-30 15:46:16 -0600 (Sun, 30 Nov 2008) | 1 line
fix pyspecific extensions that were broken by Sphinx's grand renaming
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Diffstat (limited to 'Doc/c-api/arg.rst')
-rw-r--r-- | Doc/c-api/arg.rst | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst index e4b91b9..d64cc5c 100644 --- a/Doc/c-api/arg.rst +++ b/Doc/c-api/arg.rst @@ -32,6 +32,11 @@ variable(s) whose address should be passed. converted to C strings using the default encoding. If this conversion fails, a :exc:`UnicodeError` is raised. + Starting with Python 2.5 the type of the length argument can be + controlled by defining the macro :cmacro:`PY_SSIZE_T_CLEAN` before + including :file:`Python.h`. If the macro is defined, length is a + :ctype:`Py_ssize_t` rather than an int. + ``s*`` (string, Unicode, or any buffer compatible object) [Py_buffer \*] This is similar to ``s``, but the code fills a :ctype:`Py_buffer` structure provided by the caller. In this case the Python string may contain embedded @@ -43,17 +48,20 @@ variable(s) whose address should be passed. has processed the data. ``s#`` (string, Unicode or any read buffer compatible object) [const char \*, int or :ctype:`Py_ssize_t`] - This variant on ``s*`` stores into two C variables, the first one a pointer - to a character string, the second one its length. All other read-buffer - compatible objects pass back a reference to the raw internal data - representation. Since this format doesn't allow writable buffer compatible - objects like byte arrays, ``s*`` is to be preferred. The type of - the length argument (int or :ctype:`Py_ssize_t`) is controlled by + This variant on ``s`` stores into two C variables, the first one a pointer to + a character string, the second one its length. In this case the Python + string may contain embedded null bytes. Unicode objects pass back a pointer + to the default encoded string version of the object if such a conversion is + possible. All other read-buffer compatible objects pass back a reference to + the raw internal data representation. Since this format doesn't allow writable buffer compatible objects like byte + arrays, ``s*`` is to be preferred. + + The type of the length argument (int or :ctype:`Py_ssize_t`) is controlled by defining the macro :cmacro:`PY_SSIZE_T_CLEAN` before including :file:`Python.h`. If the macro was defined, length is a :ctype:`Py_ssize_t` - rather than an int. This behavior will change in a future Python - version to only support :ctype:`Py_ssize_t` and drop int support. - It is best to always define :cmacro:`PY_SSIZE_T_CLEAN`. + rather than an int. This behavior will change in a future Python version to + only support :ctype:`Py_ssize_t` and drop int support. It is best to always + define :cmacro:`PY_SSIZE_T_CLEAN`. ``y`` (bytes object) [const char \*] This variant on ``s`` converts a Python bytes or bytearray object to a C |