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| author | Serhiy Storchaka <storchaka@gmail.com> | 2018-12-31 12:15:16 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-12-31 12:15:16 (GMT) |
| commit | 052b2dfdc967a8c061ff9561534e905009b88b8c (patch) | |
| tree | 1b9c6c026ff687e9332116d52d2d9ec55acf1abb /Lib/collections | |
| parent | 5c117dd227e1b4c4f0a62564d8592f1ba45c91eb (diff) | |
| download | cpython-052b2dfdc967a8c061ff9561534e905009b88b8c.zip cpython-052b2dfdc967a8c061ff9561534e905009b88b8c.tar.gz cpython-052b2dfdc967a8c061ff9561534e905009b88b8c.tar.bz2 | |
bpo-32492: Tweak _collections._tuplegetter. (GH-11367)
* Replace the docstrings cache with sys.intern().
* Improve tests.
* Unify names of tp_descr_get and tp_descr_set functions.
Diffstat (limited to 'Lib/collections')
| -rw-r--r-- | Lib/collections/__init__.py | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py index 0b74c3f..c31d7b7 100644 --- a/Lib/collections/__init__.py +++ b/Lib/collections/__init__.py @@ -316,8 +316,6 @@ try: except ImportError: _tuplegetter = lambda index, doc: property(_itemgetter(index), doc=doc) -_nt_itemgetters = {} - def namedtuple(typename, field_names, *, rename=False, defaults=None, module=None): """Returns a new subclass of tuple with named fields. @@ -456,16 +454,9 @@ def namedtuple(typename, field_names, *, rename=False, defaults=None, module=Non '_asdict': _asdict, '__getnewargs__': __getnewargs__, } - cache = _nt_itemgetters for index, name in enumerate(field_names): - try: - doc = cache[index] - except KeyError: - doc = f'Alias for field number {index}' - cache[index] = doc - - tuplegetter_object = _tuplegetter(index, doc) - class_namespace[name] = tuplegetter_object + doc = _sys.intern(f'Alias for field number {index}') + class_namespace[name] = _tuplegetter(index, doc) result = type(typename, (tuple,), class_namespace) |