narwhals.exceptions
ColumnNotFoundError
Exception raised when column name isn't present.
ComputeError
Exception raised when the underlying computation could not be evaluated.
DuplicateError
Exception when duplicate column names are encountered.
InvalidIntoExprError
Exception raised when object can't be converted to expression.
InvalidOperationError
Exception raised during invalid operations.
MultiOutputExpressionError
Exception raised when using multi-output expression in unsupported context.
NarwhalsUnstableWarning
Warning issued when a method or function is considered unstable in the stable api.
ShapeError
Exception raised when trying to perform operations on data structures with incompatible shapes.
UnsupportedDTypeError
Exception raised when trying to convert to a DType which is not supported by the given backend.