mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 08:34:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

bpo-45679: Fix caching of multi-value typing.Literal (GH-29334)

Browse source 
Literal[True, 2] is no longer equal to Literal[1, 2].
(cherry picked from commit 634984d7db)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot) 2021-10-31 01:43:40 -07:00 • committed by GitHub
parent da222b7cc8
commit 3997f3ce8a
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 11 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

11
Lib/typing.py
View file

@ -403,9 +403,10 @@ class _SpecialForm(_Final, _root=True):
class _LiteralSpecialForm(_SpecialForm, _root=True):
@_tp_cache(typed=True)
def __getitem__(self, parameters):
return self._getitem(self, parameters)
if not isinstance(parameters, tuple):
parameters = (parameters,)
return self._getitem(self, *parameters)
@_SpecialForm
@ -528,7 +529,8 @@ def Optional(self, parameters):
return Union[arg, type(None)]
@_LiteralSpecialForm
def Literal(self, parameters):
@_tp_cache(typed=True)
def Literal(self, *parameters):
"""Special typing form to define literal types (a.k.a. value types).
This form can be used to indicate to type checkers that the corresponding
@ -551,9 +553,6 @@ def Literal(self, parameters):
"""
# There is no '_type_check' call because arguments to Literal[...] are
# values, not types.
if not isinstance(parameters, tuple):
parameters = (parameters,)
parameters = _flatten_literal_params(parameters)
try: