15 lines
487 B
Python
15 lines
487 B
Python
from __future__ import annotations
|
|
|
|
from typing import TYPE_CHECKING, Any, TypeVar
|
|
|
|
if TYPE_CHECKING:
|
|
from narwhals._sql.dataframe import SQLLazyFrame
|
|
from narwhals._sql.expr import SQLExpr
|
|
|
|
SQLExprAny = SQLExpr[Any, Any]
|
|
SQLLazyFrameAny = SQLLazyFrame[Any, Any, Any]
|
|
|
|
SQLExprT = TypeVar("SQLExprT", bound="SQLExprAny")
|
|
SQLExprT_contra = TypeVar("SQLExprT_contra", bound="SQLExprAny", contravariant=True)
|
|
SQLLazyFrameT = TypeVar("SQLLazyFrameT", bound="SQLLazyFrameAny")
|