RuleTree.exceptions module

Exceptions and warnings of RuleTree.

exception NoSplitFoundWarning

Bases: RuntimeWarning

Raised by a stump (or splitter, or transformer) that cannot split the instances of a node.

The tree catches it and makes the node a leaf. It is a warning, not an error: no split is a normal outcome, e.g. for a node whose instances all have the same feature values.

exception MissingOptionalDependencyError

Bases: ImportError

Raised when a feature needs a package that is not installed because it is optional.

The message names the extra of RuleTree that installs it, e.g. pip install "RuleTree[shapelets]".