chore(typing): Move DepthTracking* typing

narwhals/_compliant/group_by.py

@@ -17,14 +17,15 @@
 from narwhals._compliant.typing import CompliantExprT_contra
 from narwhals._compliant.typing import CompliantFrameT_co
 from narwhals._compliant.typing import CompliantLazyFrameT_co
+from narwhals._compliant.typing import DepthTrackingExprAny
+from narwhals._compliant.typing import DepthTrackingExprT_contra
 from narwhals._compliant.typing import EagerExprT_contra
 from narwhals._compliant.typing import LazyExprT_contra
 from narwhals._compliant.typing import NativeExprT_co
 
 if TYPE_CHECKING:
     from typing_extensions import TypeAlias
 
-    from narwhals._compliant.expr import DepthTrackingExpr
 
 if not TYPE_CHECKING:  # pragma: no cover
     if sys.version_info >= (3, 9):
@@ -50,10 +51,6 @@
 NarwhalsAggregation: TypeAlias = Literal[
     "sum", "mean", "median", "max", "min", "std", "var", "len", "n_unique", "count"
 ]
-DepthTrackingExprAny: TypeAlias = "DepthTrackingExpr[Any, Any]"
-DepthTrackingExprT_contra = TypeVar(
-    "DepthTrackingExprT_contra", bound=DepthTrackingExprAny, contravariant=True
-)
 
 
 _RE_LEAF_NAME: re.Pattern[str] = re.compile(r"(\w+->)")

narwhals/_compliant/namespace.py

@@ -7,10 +7,10 @@
 from typing import Iterable
 from typing import Literal
 from typing import Protocol
-from typing import TypeVar
 
 from narwhals._compliant.typing import CompliantExprT
 from narwhals._compliant.typing import CompliantFrameT
+from narwhals._compliant.typing import DepthTrackingExprT
 from narwhals._compliant.typing import EagerDataFrameT
 from narwhals._compliant.typing import EagerExprT
 from narwhals._compliant.typing import EagerSeriesT
@@ -21,7 +21,6 @@
 if TYPE_CHECKING:
     from typing_extensions import TypeAlias
 
-    from narwhals._compliant.expr import DepthTrackingExpr
     from narwhals._compliant.selectors import CompliantSelectorNamespace
     from narwhals._compliant.when_then import CompliantWhen
     from narwhals._compliant.when_then import EagerWhen
@@ -33,9 +32,6 @@
 
 __all__ = ["CompliantNamespace", "EagerNamespace"]
 
-DepthTrackingExprAny: TypeAlias = "DepthTrackingExpr[Any, Any]"
-DepthTrackingExprT = TypeVar("DepthTrackingExprT", bound=DepthTrackingExprAny)
-
 
 class CompliantNamespace(Protocol[CompliantFrameT, CompliantExprT]):
     _implementation: Implementation

narwhals/_compliant/typing.py

@@ -13,6 +13,7 @@
     from narwhals._compliant.dataframe import CompliantLazyFrame
     from narwhals._compliant.dataframe import EagerDataFrame
     from narwhals._compliant.expr import CompliantExpr
+    from narwhals._compliant.expr import DepthTrackingExpr
     from narwhals._compliant.expr import EagerExpr
     from narwhals._compliant.expr import LazyExpr
     from narwhals._compliant.expr import NativeExpr
@@ -40,6 +41,8 @@
 CompliantLazyFrameAny: TypeAlias = "CompliantLazyFrame[Any, Any]"
 CompliantFrameAny: TypeAlias = "CompliantDataFrameAny | CompliantLazyFrameAny"
 
+DepthTrackingExprAny: TypeAlias = "DepthTrackingExpr[Any, Any]"
+
 EagerDataFrameAny: TypeAlias = "EagerDataFrame[Any, Any, Any]"
 EagerSeriesAny: TypeAlias = "EagerSeries[Any]"
 EagerExprAny: TypeAlias = "EagerExpr[Any, Any]"
@@ -82,6 +85,11 @@
 )
 IntoCompliantExpr: TypeAlias = "CompliantExpr[CompliantFrameT, CompliantSeriesOrNativeExprT_co] | CompliantSeriesOrNativeExprT_co"
 
+DepthTrackingExprT = TypeVar("DepthTrackingExprT", bound=DepthTrackingExprAny)
+DepthTrackingExprT_contra = TypeVar(
+    "DepthTrackingExprT_contra", bound=DepthTrackingExprAny, contravariant=True
+)
+
 EagerExprT = TypeVar("EagerExprT", bound=EagerExprAny)
 EagerExprT_contra = TypeVar("EagerExprT_contra", bound=EagerExprAny, contravariant=True)
 EagerSeriesT = TypeVar("EagerSeriesT", bound=EagerSeriesAny)