mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 16:39:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

bpo-39481: Implementation for PEP 585 (#18239)

Browse source 
This implements things like `list[int]`,
which returns an object of type `types.GenericAlias`.
This object mostly acts as a proxy for `list`,
but has attributes `__origin__` and `__args__`
that allow recovering the parts (with values `list` and `(int,)`.

There is also an approximate notion of type variables;
e.g. `list[T]` has a `__parameters__` attribute equal to `(T,)`.
Type variables are objects of type `typing.TypeVar`.
This commit is contained in:
Guido van Rossum 2020-04-07 09:50:06 -07:00 • committed by GitHub
parent 9cc3ebd7e0
commit 48b069a003
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
30 changed files with 830 additions and 53 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Lib/test/test_doctest.py
View file

@ -665,7 +665,7 @@ plain ol' Python and is guaranteed to be available.
>>> import builtins
>>> tests = doctest.DocTestFinder().find(builtins)
>>> 800 < len(tests) < 820 # approximate number of objects with docstrings
>>> 810 < len(tests) < 830 # approximate number of objects with docstrings
True
>>> real_tests = [t for t in tests if len(t.examples) > 0]
>>> len(real_tests) # objects that actually have doctests