enums_definition error

access to an enum member that does not exist for the target

Enum members may be defined conditionally on a statically-known check such as the Python version:

class Color(Enum):
    RED = 1
    if sys.version_info >= (4, 0):
        BLUE = 3      # absent when checking for 3.12

Color.BLUE            # error — BLUE does not exist at the target version

This rule flags access to a member that was defined only under an if-guard that is statically false at the configured target. It is intentionally narrow — it never touches unconditional members, inherited attributes, or functional Enum(...) calls — so it cannot fire on valid code.

How to handle it

Every rule is on by default — strict is the default, not a cage. You can dial enums_definition down per-file or per-path from your editor or pyproject.toml, or fix the code so it type-checks. See the Type System rules and the complete diagnostic reference.

Canonical URL: https://www.basilisk-python.dev/errors/enums_definition