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docs: Fix Expr.all description of Kleene logic #20409

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Dec 27, 2024
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docs: Fix Expr.all description of Kleene logic #20409

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632f853
docs: Fix `Expr.all` description of Kleene logic
lukemanley Dec 23, 2024
29aa288
fix one more mention of Kleene logic
lukemanley Dec 23, 2024
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2 changes: 1 addition & 1 deletion crates/polars-plan/src/dsl/mod.rs
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Expand Up @@ -1801,7 +1801,7 @@ impl Expr {
/// Returns whether all values in the column are `true`.
///
/// If `ignore_nulls` is `False`, [Kleene logic] is used to deal with nulls:
/// if the column contains any null values and no `true` values, the output
/// if the column contains any null values and no `false` values, the output
/// is null.
///
/// [Kleene logic]: https://en.wikipedia.org/wiki/Three-valued_logic
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2 changes: 1 addition & 1 deletion py-polars/polars/expr/expr.py
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Expand Up @@ -516,7 +516,7 @@ def all(self, *, ignore_nulls: bool = True) -> Expr:
Ignore null values (default).

If set to `False`, `Kleene logic`_ is used to deal with nulls:
if the column contains any null values and no `True` values,
if the column contains any null values and no `False` values,
the output is null.

.. _Kleene logic: https://en.wikipedia.org/wiki/Three-valued_logic
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