polars.Expr.all#
- Expr.all() Self [source]#
Check if all boolean values in a Boolean column are True.
This method is an expression - not to be confused with
polars.all()
which is a function to select all columns.- Returns:
- Boolean literal
Examples
>>> df = pl.DataFrame( ... {"TT": [True, True], "TF": [True, False], "FF": [False, False]} ... ) >>> df.select(pl.col("*").all()) shape: (1, 3) ┌──────┬───────┬───────┐ │ TT ┆ TF ┆ FF │ │ --- ┆ --- ┆ --- │ │ bool ┆ bool ┆ bool │ ╞══════╪═══════╪═══════╡ │ true ┆ false ┆ false │ └──────┴───────┴───────┘