Exceptions

ArrowError	Deprecated: will be removed.
ColumnNotFoundError	Exception raised when a specified column is not found.
ComputeError	Exception raised when Polars could not perform an underlying computation.
DuplicateError	Exception raised when a column name is duplicated.
InvalidOperationError	Exception raised when an operation is not allowed (or possible) against a given object or data structure.
NoDataError	Exception raised when an operation cannot be performed on an empty data structure.
NoRowsReturnedError	Exception raised when no rows are returned, but at least one row is expected.
PolarsError	Base class for all Polars errors.
PolarsPanicError	Exception raised when an unexpected state causes a panic in the underlying Rust library.
RowsError	Exception raised when the number of returned rows does not match expectation.
SchemaError	Exception raised when an unexpected schema mismatch causes an error.
SchemaFieldNotFoundError	Exception raised when a specified schema field is not found.
ShapeError	Exception raised when trying to perform operations on data structures with incompatible shapes.
StructFieldNotFoundError	Exception raised when a specified Struct field is not found.
TooManyRowsReturnedError	Exception raised when more rows than expected are returned.