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| author | Pablo Galindo <Pablogsal@gmail.com> | 2018-12-30 09:24:03 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2018-12-30 09:24:03 (GMT) |
| commit | 3f5fc70c6213008243e7d605f7d8a2d8f94cf919 (patch) | |
| tree | 44c396f3a052803c4725eec2e6ccb1ab32529c8f /Misc/NEWS.d | |
| parent | b0a6196ffd58ff91462191f426706897dc920eee (diff) | |
| download | cpython-3f5fc70c6213008243e7d605f7d8a2d8f94cf919.zip cpython-3f5fc70c6213008243e7d605f7d8a2d8f94cf919.tar.gz cpython-3f5fc70c6213008243e7d605f7d8a2d8f94cf919.tar.bz2 | |
bpo-32492: 1.6x speed up in namedtuple attribute access using C fast-path (#10495)
* bpo-32492: 2.5x speed up in namedtuple attribute access using C fast path
* Add News entry
* fixup! bpo-32492: 2.5x speed up in namedtuple attribute access using C fast path
* Check for tuple in the __get__ of the new descriptor and don't cache the descriptor itself
* Don't inherit from property. Implement GC methods to handle __doc__
* Add a test for the docstring substitution in descriptors
* Update NEWS entry to reflect time against 3.7 branch
* Simplify implementation with argument clinic, better error messages, only __new__
* Use positional-only parameters for the __new__
* Use PyTuple_GET_SIZE and PyTuple_GET_ITEM to tighter the implementation of tuplegetterdescr_get
* Implement __set__ to make tuplegetter a data descriptor
* Use Py_INCREF now that we inline PyTuple_GetItem
* Apply the valid_index() function, saving one test
* Move Py_None test out of the critical path.
Diffstat (limited to 'Misc/NEWS.d')
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2018-11-13-01-03-10.bpo-32492.voIdcp.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2018-11-13-01-03-10.bpo-32492.voIdcp.rst b/Misc/NEWS.d/next/Core and Builtins/2018-11-13-01-03-10.bpo-32492.voIdcp.rst new file mode 100644 index 0000000..24682b1 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2018-11-13-01-03-10.bpo-32492.voIdcp.rst @@ -0,0 +1,2 @@ +Speed up :class:`namedtuple` attribute access by 1.6x using a C fast-path +for the name descriptors. Patch by Pablo Galindo. |