diff options
Diffstat (limited to 'Lib/collections')
| -rw-r--r-- | Lib/collections/__init__.py | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py index cec6c97..178cdb1 100644 --- a/Lib/collections/__init__.py +++ b/Lib/collections/__init__.py @@ -39,6 +39,21 @@ except ImportError: pass +def __getattr__(name): + # For backwards compatibility, continue to make the collections ABCs + # through Python 3.6 available through the collections module. + # Note, no new collections ABCs were added in Python 3.7 + if name in _collections_abc.__all__: + obj = getattr(_collections_abc, name) + import warnings + warnings.warn("Using or importing the ABCs from 'collections' instead " + "of from 'collections.abc' is deprecated since Python 3.3, " + "and in 3.10 it will stop working", + DeprecationWarning, stacklevel=2) + globals()[name] = obj + return obj + raise AttributeError(f'module {__name__!r} has no attribute {name!r}') + ################################################################################ ### OrderedDict ################################################################################ |