--- /dev/null
+from _typeshed import Self
+from types import TracebackType
+from typing import Type, TypeVar, Union, overload
+
+_T = TypeVar("_T")
+_KeyType = Union[str, bytes]
+_ValueType = Union[str, bytes]
+
+class error(OSError): ...
+
+# Actual typename gdbm, not exposed by the implementation
+class _gdbm:
+ def firstkey(self) -> bytes | None: ...
+ def nextkey(self, key: _KeyType) -> bytes | None: ...
+ def reorganize(self) -> None: ...
+ def sync(self) -> None: ...
+ def close(self) -> None: ...
+ def __getitem__(self, item: _KeyType) -> bytes: ...
+ def __setitem__(self, key: _KeyType, value: _ValueType) -> None: ...
+ def __delitem__(self, key: _KeyType) -> None: ...
+ def __contains__(self, key: _KeyType) -> bool: ...
+ def __len__(self) -> int: ...
+ def __enter__(self: Self) -> Self: ...
+ def __exit__(
+ self, exc_type: Type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None
+ ) -> None: ...
+ @overload
+ def get(self, k: _KeyType) -> bytes | None: ...
+ @overload
+ def get(self, k: _KeyType, default: bytes | _T) -> bytes | _T: ...
+ def keys(self) -> list[bytes]: ...
+ def setdefault(self, k: _KeyType, default: _ValueType = ...) -> bytes: ...
+ # Don't exist at runtime
+ __new__: None # type: ignore
+ __init__: None # type: ignore
+
+def open(__filename: str, __flags: str = ..., __mode: int = ...) -> _gdbm: ...