fix mistakes making tests fail

src/pydiverse/transform/_internal/backend/polars.py

@@ -583,24 +583,24 @@ def _dt_day_of_week(x):
     def _dt_day_of_year(x):
         return x.dt.ordinal_day().cast(pl.Int64)
 
-    @impl(ops.dt_days)
-    def _dt_days(x):
+    @impl(ops.dur_days)
+    def _dur_days(x):
         return x.dt.total_days()
 
-    @impl(ops.dt_hours)
-    def _dt_hours(x):
+    @impl(ops.dur_hours)
+    def _dur_hours(x):
         return x.dt.total_hours()
 
-    @impl(ops.dt_minutes)
-    def _dt_minutes(x):
+    @impl(ops.dur_minutes)
+    def _dur_minutes(x):
         return x.dt.total_minutes()
 
-    @impl(ops.dt_seconds)
-    def _dt_seconds(x):
+    @impl(ops.dur_seconds)
+    def _dur_seconds(x):
         return x.dt.total_seconds()
 
-    @impl(ops.dt_milliseconds)
-    def _dt_milliseconds(x):
+    @impl(ops.dur_milliseconds)
+    def _dur_milliseconds(x):
         return x.dt.total_milliseconds()
 
     @impl(ops.row_number)

src/pydiverse/transform/_internal/tree/col_expr.py

@@ -64,8 +64,6 @@ def func(accessor):
 
 
 class ColExpr(Generic[T]):
-    __slots__ = ["_dtype", "_ftype"]
-
     __contains__ = None
     __iter__ = None
 
@@ -79,10 +77,6 @@ def __bool__(self):
             "converted to a boolean or used with the and, or, not keywords"
         )
 
-    def __setstate__(self, d):  # to avoid very annoying AttributeErrors
-        for slot, val in d[1].items():
-            setattr(self, slot, val)
-
     def _repr_html_(self) -> str:
         return f"<pre>{html.escape(repr(self))}</pre>"
 
@@ -1064,8 +1058,6 @@ def seconds(self: ColExpr[Duration]) -> ColExpr[Int]:
 
 
 class Col(ColExpr):
-    __slots__ = ["name", "_ast", "_uuid"]
-
     def __init__(
         self, name: str, _ast: AstNode, _uuid: UUID, _dtype: Dtype, _ftype: Ftype
     ):
@@ -1097,8 +1089,6 @@ def __hash__(self) -> int:
 
 
 class ColName(ColExpr):
-    __slots__ = ["name"]
-
     def __init__(
         self, name: str, dtype: Dtype | None = None, ftype: Ftype | None = None
     ):
@@ -1111,8 +1101,6 @@ def __repr__(self) -> str:
 
 
 class LiteralCol(ColExpr):
-    __slots__ = ["val"]
-
     def __init__(self, val: Any, dtype: types.Dtype | None = None):
         self.val = val
         if dtype is None:
@@ -1125,8 +1113,6 @@ def __repr__(self):
 
 
 class ColFn(ColExpr):
-    __slots__ = ("op", "args", "context_kwargs")
-
     def __init__(self, op: Operator, *args: ColExpr, **kwargs: list[ColExpr | Order]):
         self.op = op
         # While building the expression tree, we have to allow markers.
@@ -1265,8 +1251,6 @@ def __repr__(self) -> str:
 
 
 class CaseExpr(ColExpr):
-    __slots__ = ["cases", "default_val"]
-
     def __init__(
         self,
         cases: Iterable[tuple[ColExpr, ColExpr]],
@@ -1409,8 +1393,6 @@ def otherwise(self, value: ColExpr) -> CaseExpr:
 
 
 class Cast(ColExpr):
-    __slots__ = ["val", "target_type"]
-
     def __init__(self, val: ColExpr, target_type: Dtype):
         if target_type.const:
             raise TypeError("cannot cast to `const` type")