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from __future__ import annotations
from typing import Optional
from sqlalchemy.orm import column_property
from sqlalchemy.orm import DeclarativeBase
from sqlalchemy.orm import Mapped
from sqlalchemy.orm import mapped_column
from sqlalchemy.orm import MappedAsDataclass
from sqlalchemy.orm import query_expression
class Base(DeclarativeBase):
pass
class TestInitialSupport(Base):
__tablename__ = "a"
id: Mapped[int] = mapped_column(primary_key=True, init=False)
data: Mapped[str]
x: Mapped[Optional[int]] = mapped_column(default=None)
y: Mapped[Optional[int]] = mapped_column(kw_only=True)
tis = TestInitialSupport(data="some data", y=5)
# EXPECTED_TYPE: str
reveal_type(tis.data)
# EXPECTED_RE_TYPE: .*Union\[builtins.int, None\]
reveal_type(tis.y)
tis.data = "some other data"
class TestTicket9628(MappedAsDataclass, Base):
__tablename__ = "ticket_9628"
id: Mapped[int] = mapped_column(primary_key=True, init=False)
data: Mapped[str] = mapped_column()
d2: Mapped[str] = column_property(data + "Asdf")
d3: Mapped[str] = query_expression(data + "Asdf")
# d2 and d3 are not required, as these have init=False. We omit
# them from dataclass transforms entirely as these are never intended
# to be writeable fields in a 2.0 declarative mapping
t9628 = TestTicket9628(data="asf")
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