Skip to content

B008 doesn't report when the annotation refers to an immutable type, but RUF009 does #15772

@InSyncWithFoo

Description

@InSyncWithFoo

Minimal reproducible example (playground):

def _(
    this_is_fine: int = f(),           # No error
    this_is_not: list[int] = f()       # B008: Do not perform function call `f` in argument defaults
): ...


@dataclass
class _:
    this_is_not_fine: list[int] = f()  # RUF009: Do not perform function call `f` in dataclass defaults
    this_is_also_not: int = f()        # RUF009: Do not perform function call `f` in dataclass defaults

RUF009 should behave similar to B008 and ignore attributes with immutable types.

Metadata

Metadata

Assignees

No one assigned

    Labels

    bugSomething isn't workinggood first issueGood for newcomers

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions