Windowell Expressions -

def setUp(self): self.engine = WindowellEngine() self.df = pd.DataFrame( 'product': ['A', 'A', 'A', 'B', 'B'], 'date': pd.date_range('2024-01-01', periods=5), 'sales': [100, 150, 200, 50, 75] )

def order(self, *columns): self.order_by.extend(columns) return self windowell expressions

@dataclass class WindowellExpression: partition_by: List[str] order_by: List[str] frame: Optional[WindowFrame] = None name: Optional[str] = None def setUp(self): self

class WindowellEngine: """Dynamic window function processor""" 75] ) def order(self

def rows_between(self, start_offset: int, start_type: str, end_offset: int, end_type: str): self.frame = WindowFrame( start=(start_offset, FrameBound(start_type)), end=(end_offset, FrameBound(end_type)), frame_type="rows" ) return self

def __init__(self): self.window_registry: dict[str, WindowellExpression] = {}