8000 Make enum values final - fixes #11919 by joey-laminar · Pull Request #11962 · python/mypy · GitHub
[go: up one dir, main page]
Skip to content

Make enum values final - fixes #11919 #11962

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
merged 1 commit into from
Jan 10, 2022
Merged

Make enum values final - fixes #11919 #11962

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file 8000
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion mypy/semanal.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2107,10 +2107,10 @@ def visit_assignment_stmt(self, s: AssignmentStmt) -> None:
s.is_final_def = self.unwrap_final(s)
self.analyze_lvalues(s)
self.check_final_implicit_def(s)
self.store_final_status(s)
self.check_classvar(s)
self.process_type_annotation(s)
self.apply_dynamic_class_hook(s)
self.store_final_status(s)
if not s.type:
self.process_module_assignment(s.lvalues, s.rvalue, s)
self.process__all__(s)
Expand Down
45 changes: 30 additions & 15 deletions test-data/unit/check-enum.test
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -618,8 +618,8 @@ reveal_type(A2.x.value) # N: Revealed type is "builtins.int"
reveal_type(A2.x._value_) # N: Revealed type is "builtins.int"
is_x(reveal_type(A3.x.name)) # N: Revealed type is "Literal['x']"
is_x(reveal_type(A3.x._name_)) # N: Revealed type is "Literal['x']"
reveal_type(A3.x.value) # N: Revealed type is "builtins.int"
reveal_type(A3.x._value_) # N: Revealed type is "builtins.int"
reveal_type(A3.x.value) # N: Revealed type is "Literal[1]?"
reveal_type(A3.x._value_) # N: Revealed type is "Literal[1]?"

B1 = IntEnum('B1', 'x')
class B2(IntEnum):
Expand All @@ -639,8 +639,8 @@ reveal_type(B2.x.value) # N: Revealed type is "builtins.int"
reveal_type(B2.x._value_) # N: Revealed type is "builtins.int"
is_x(reveal_type(B3.x.name)) # N: Revealed type is "Literal['x']"
is_x(reveal_type(B3.x._name_)) # N: Revealed type is "Literal['x']"
reveal_type(B3.x.value) # N: Revealed type is "builtins.int"
reveal_type(B3.x._value_) # N: Revealed type is "builtins.int"
reveal_type(B3.x.value) # N: Revealed type is "Literal[1]?"
reveal_type(B3.x._value_) # N: Revealed type is "Literal[1]?"

# TODO: C1.x.value and C2.x.value should also be of type 'int'
# This requires either a typeshed change or a plugin refinement
Expand All @@ -661,8 +661,8 @@ reveal_type(C2.x.value) # N: Revealed type is "builtins.int"
reveal_type(C2.x._value_) # N: Revealed type is "builtins.int"
is_x(reveal_type(C3.x.name)) # N: Revealed type is "Literal['x']"
is_x(reveal_type(C3.x._name_)) # N: Revealed type is "Literal['x']"
reveal_type(C3.x.value) # N: Revealed type is "builtins.int"
reveal_type(C3.x._value_) # N: Revealed type is "builtins.int"
reveal_type(C3.x.value) # N: Revealed type is "Literal[1]?"
reveal_type(C3.x._value_) # N: Revealed type is "Literal[1]?"

D1 = Flag('D1', 'x')
class D2(Flag):
Expand All @@ -680,8 +680,8 @@ reveal_type(D2.x.value) # N: Revealed type is "builtins.int"
reveal_type(D2.x._value_) # N: Revealed type is "builtins.int"
is_x(reveal_type(D3.x.name)) # N: Revealed type is "Literal['x']"
is_x(reveal_type(D3.x._name_)) # N: Revealed type is "Literal['x']"
reveal_type(D3.x.value) # N: Revealed type is "builtins.int"
reveal_type(D3.x._value_) # N: Revealed type is "builtins.int"
reveal_type(D3.x.value) # N: Revealed type is "Literal[1]?"
reveal_type(D3.x._value_) # N: Revealed type is "Literal[1]?"

# TODO: Generalize our enum functional API logic to work with subclasses of Enum
# See https://github.com/python/mypy/issues/6037
Expand All @@ -699,8 +699,8 @@ reveal_type(E2.x.value) # N: Revealed type is "builtins.int"
reveal_type(E2.x._value_) # N: Revealed type is "builtins.int"
is_x(reveal_type(E3.x.name)) # N: Revealed type is "Literal['x']"
is_x(reveal_type(E3.x._name_)) # N: Revealed type is "Literal['x']"
reveal_type(E3.x.value) # N: Revealed type is "builtins.int"
reveal_type(E3.x._value_) # N: Revealed type is "builtins.int"
reveal_type(E3.x.value) # N: Revealed type is "Literal[1]?"
reveal_type(E3.x._value_) # N: Revealed type is "Literal[1]?"


# TODO: Figure out if we can construct enums using EnumMetas using the functional API.
Expand Down Expand Up @@ -737,9 +737,9 @@ from enum import Enum
class SomeEnum(Enum):
a = "foo"
[out]
main:2: note: Revealed type is "builtins.int"
main:2: note: Revealed type is "Literal[1]?"
[out2]
main:2: note: Revealed type is "builtins.str"
main:2: note: Revealed type is "Literal['foo']?"

[case testEnumReachabilityChecksBasic]
from enum import Enum
Expand Down Expand Up @@ -1311,8 +1311,8 @@ class Foo(Enum):
B = 2

a = Foo.A
reveal_type(a.value) # N: Revealed type is "builtins.int"
reveal_type(a._value_) # N: Revealed type is "builtins.int"
reveal_type(a.value) # N: Revealed type is "Union[Literal[1]?, Literal[2]?]"
reveal_type(a._value_) # N: Revealed type is "Union[Literal[1]?, Literal[2]?]"

[case testNewSetsUnexpectedValueType]
from enum import Enum
Expand Down Expand Up @@ -1437,7 +1437,7 @@ class Foo(Enum):
A = 1
A = 'a' # E: Attempted to reuse member name "A" in Enum definition "Foo" \
# E: Incompatible types in assignment (expression has type "str", variable has type "int")
reveal_type(Foo.A.value) # N: Revealed type is "builtins.int"
reveal_type(Foo.A.value) # N: Revealed type is "Literal[1]?"

class Bar(Enum):
A = 1
Expand Down Expand Up @@ -1788,3 +1788,18 @@ class C(Enum):
class D(C): # E: Cannot inherit from final class "C"
x: int # E: Cannot assign to final name "x"
[builtins fixtures/bool.pyi]

[case testEnumLiteralValues]
from enum import Enum

class A(Enum):
str = "foo"
int = 1
bool = False
tuple = (1,)

reveal_type(A.str.value) # N: Revealed type is "Literal['foo']?"
reveal_type(A.int.value) # N: Revealed type is "Literal[1]?"
reveal_type(A.bool.value) # N: Revealed type is "Literal[False]?"
reveal_type(A.tuple.value) # N: Revealed type is "Tuple[Literal[1]?]"
[builtins fixtures/tuple.pyi]
8000 6 changes: 3 additions & 3 deletions test-data/unit/merge.test
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1435,16 +1435,16 @@ TypeInfo<0>(
Bases(enum.Enum<1>)
Mro(target.A<0>, enum.Enum<1>, builtins.object<2>)
Names(
X<3> (builtins.int<4>))
X<3> (Literal[0]?<4>))
MetaclassType(enum.EnumMeta<5>))
==>
TypeInfo<0>(
Name(target.A)
Bases(enum.Enum<1>)
Mro(target.A<0>, enum.Enum<1>, builtins.object<2>)
Names(
X<3> (builtins.int<4>)
Y<6> (builtins.int<4>))
X<3> (Literal[0]?<4>)
Y<6> (Literal[1]?<4>))
MetaclassType(enum.EnumMeta<5>))

[case testLiteralMerge]
Expand Down
0