polars.LazyFrame.with_columns_seq#

LazyFrame.with_columns_seq(

*exprs: IntoExpr | Iterable[IntoExpr],

**named_exprs: IntoExpr,

) → Self[source]#

Add columns to this LazyFrame.

Added columns will replace existing columns with the same name.

This will run all expression sequentially instead of in parallel. Use this when the work per expression is cheap.

Parameters:

*exprs: Column(s) to add, specified as positional arguments. Accepts expression input. Strings are parsed as column names, other non-expression inputs are parsed as literals.
**named_exprs: Additional columns to add, specified as keyword arguments. The columns will be renamed to the keyword used.

Returns: