This makes the default behavior (without specifying `globalns` manually) more
predictable for users, finds the right globalns automatically.
Implementation for classes assumes has a `__module__` attribute and that module
is present in `sys.modules`. It does this recursively for all bases in the
MRO. For modules, the implementation just uses their `__dict__` directly.
This is backwards compatible, will just raise fewer exceptions in naive user
code.
Originally implemented and reviewed at https://github.com/python/typing/pull/470.
This PR contains two updates to typing module:
- Support ContextManager on all versions (original PR by Jelle Zijlstra).
- Add generic AsyncContextManager.
(Upstream is https://github.com/python/typing)
- Add TYPE_CHECKING (false at runtime, true in type checkers) (upstream #230).
- Avoid error on Union[xml.etree.cElementTree.Element, str] (upstream #229).
- Repr of Tuple[()] should be 'Tuple[()]' (upstream #231).
- Add NewType() (upstream #189).
This syncs to rev 7b43ada77821d23e55e3a4b35f6055a59b9e1ad7 there.
Summary:
- Add typing.DefaultDict (as a generic variant of collections.defaultdict).
- Use collections.Reversible if it exists (only relevant for Python 3.6).
- Revamped generic class behavior to conform to updated PEP 484.
- Improve speed of Generic.__new__.
- Make sure __init__ is called for new Generic instances. Fix issue #26391.
- Refactor async support to be compatible with 3.2, 3.3, 3.4.
- Remove 'io' and 're' from __all__ (they still exist, just not
included by "import *"). Fix issue #26234.
- Change @overload -- you can now use it outside stubs (you still
cannot call the decorated function though).
There area bunch of TODOs here, but the biggest (not mentioned in the
file) is that I'm going to take out __instancecheck__ and
__subclasscheck__. However my personal schedule is such that I
probably won't have time for these before Larry tags beta 1. But I
will try -- this commit is mostly to make sure that typing.py doesn't
completely miss the train.
PS. I'm tracking issues at https://github.com/ambv/typehinting/issues.
