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"""Test PEP 604 - Alternative Union syntax with postponed evaluation of
annotations enabled.
For Python 3.7 - 3.9: Everything should fail.
Testing only 3.8/3.9 to support TypedDict.
"""
# pylint: disable=missing-function-docstring,unused-argument,invalid-name,missing-class-docstring
# pylint: disable=inherit-non-class,too-few-public-methods,line-too-long,unnecessary-direct-lambda-call
# pylint: disable=unnecessary-lambda-assignment
# Disabled because of a bug with pypy 3.8 see
# https://github.com/PyCQA/pylint/pull/7918#issuecomment-1352737369
# pylint: disable=multiple-statements
import dataclasses
import typing
from dataclasses import dataclass
from typing import NamedTuple, TypedDict
Alias = str | typing.List[int] # [unsupported-binary-operation]
lst = [typing.Dict[str, int] | None,] # [unsupported-binary-operation]
var1: typing.Dict[str, int | None] # [unsupported-binary-operation]
var2: int | str | None # [unsupported-binary-operation, unsupported-binary-operation]
var3: int | typing.List[str | int] # [unsupported-binary-operation]
var4: typing.Dict[typing.Tuple[int, int] | int, None] # [unsupported-binary-operation]
cast_var = 1
cast_var = typing.cast(str | int, cast_var) # [unsupported-binary-operation]
T = typing.TypeVar("T", int | str, bool) # [unsupported-binary-operation]
(lambda x: 2)(int | str) # [unsupported-binary-operation]
var: str | int # [unsupported-binary-operation]
def func(arg: int | str): # [unsupported-binary-operation]
pass
def func2() -> int | str: # [unsupported-binary-operation]
pass
class CustomCls(int):
pass
Alias2 = CustomCls | str # [unsupported-binary-operation]
var2 = CustomCls(1) | int(2)
# Check typing.NamedTuple
CustomNamedTuple = typing.NamedTuple(
"CustomNamedTuple", [("my_var", int | str)]) # [unsupported-binary-operation]
class CustomNamedTuple2(NamedTuple):
my_var: int | str # [unsupported-binary-operation]
class CustomNamedTuple3(typing.NamedTuple):
my_var: int | str # [unsupported-binary-operation]
# Check typing.TypedDict
CustomTypedDict = TypedDict("CustomTypedDict", my_var=int | str) # [unsupported-binary-operation]
CustomTypedDict2 = TypedDict("CustomTypedDict2", {"my_var": int | str}) # [unsupported-binary-operation]
class CustomTypedDict3(TypedDict):
my_var: int | str # [unsupported-binary-operation]
class CustomTypedDict4(typing.TypedDict):
my_var: int | str # [unsupported-binary-operation]
# Check dataclasses
def my_decorator(*args, **kwargs):
def wraps(*args, **kwargs):
pass
return wraps
@dataclass
class CustomDataClass:
my_var: int | str # [unsupported-binary-operation]
@dataclasses.dataclass
class CustomDataClass2:
my_var: int | str # [unsupported-binary-operation]
@dataclass()
class CustomDataClass3:
my_var: int | str # [unsupported-binary-operation]
@my_decorator
@dataclasses.dataclass
class CustomDataClass4:
my_var: int | str # [unsupported-binary-operation]
# Not an error if the metaclass implements __or__
class ForwardMetaclass(type):
def __or__(cls, other):
return True
class ReverseMetaclass(type):
def __ror__(cls, other):
return True
class WithForward(metaclass=ForwardMetaclass):
pass
class WithReverse(metaclass=ReverseMetaclass):
pass
class DefaultMetaclass:
pass
class_list = [WithForward | DefaultMetaclass]
class_list_reversed_invalid = [WithReverse | DefaultMetaclass] # [unsupported-binary-operation]
class_list_reversed_valid = [DefaultMetaclass | WithReverse]
# Pathological cases
class HorribleMetaclass(type):
__or__ = lambda x: x
class WithHorrible(metaclass=HorribleMetaclass):
pass
class_list = [WithHorrible | DefaultMetaclass]
class SecondLevelMetaclass(ForwardMetaclass):
pass
class WithSecondLevel(metaclass=SecondLevelMetaclass):
pass
class_list_with_second_level = [WithSecondLevel | DefaultMetaclass]
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