Visitar URL original
bpo-42345: Fix three issues with typing.Literal parameters by uriyyo · Pull Request #23294 · python/cpython · GitHub
Skip to content

bpo-42345: Fix three issues with typing.Literal parameters #23294

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
miss-islington merged 8 commits into from
Nov 17, 2020
Merged

bpo-42345: Fix three issues with typing.Literal parameters #23294

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
03637e2
bpo-42345: Literal equality no longer depends on order of arguments
uriyyo Nov 15, 2020
4fbf590
Use value and type for Literal equality check
uriyyo Nov 15, 2020
ea06129
Return Literal equality test
uriyyo Nov 15, 2020
b8a597a
Use typed lru_cache for Literal type
uriyyo Nov 15, 2020
19b0952
Update Misc/NEWS
uriyyo Nov 15, 2020
9d2187a
Update signature of _tp_cache function
uriyyo Nov 16, 2020
942dece
Add Literal arguments deduplication
uriyyo Nov 16, 2020
f653d68
Update News. Add tests for Literal.__args__
uriyyo Nov 17, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Use value and type for Literal equality check
  • Loading branch information
@uriyyo
uriyyo committed Nov 15, 2020
commit 4fbf5900c8d946942890d167eeb7f107841df07b
3 changes: 2 additions & 1 deletion Lib/test/test_typing.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -560,8 +560,9 @@ def test_no_multiple_subscripts(self):
Literal[1][1]

def test_equal(self):
self.assertEqual(Literal[1], Literal[1])
self.assertEqual(Literal[1, 2], Literal[2, 1])
self.assertNotEqual(Literal[1, True], Literal[1])
Comment thread
uriyyo marked this conversation as resolved.
Outdated
self.assertEqual(Literal[1, 2, 3], Literal[1, 2, 3, 3])

def test_flatten(self):
self.assertEqual(Literal[Literal[1], Literal[2], Literal[3]], Literal[1, 2, 3])
Expand Down
9 changes: 8 additions & 1 deletion Lib/typing.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -945,13 +945,20 @@ def __subclasscheck__(self, cls):
return True


def _value_and_type_iter(parameters):
return ((p, type(p)) for p in parameters)


class _LiteralGenericAlias(_GenericAlias, _root=True):

def __eq__(self, other):
if not isinstance(other, _LiteralGenericAlias):
return NotImplemented

return len(self.__args__) == len(other.__args__) and set(self.__args__) == set(other.__args__)
return set(_value_and_type_iter(self.__args__)) == set(_value_and_type_iter(other.__args__))
Comment thread
uriyyo marked this conversation as resolved.

def __hash__(self):
return hash(tuple(_value_and_type_iter(self.__args__)))


class Generic:
Expand Down