Skip to content
Narwhals
Supported Series.cat methods
Initializing search
GitHub
Narwhals
GitHub
Home
Why
Installation and quick start
Intro tutorial
Intro tutorial
DataFrame
Series
Complete example
Conversion between libraries
Narwhals and SQL
Concepts
Concepts
Order-dependence
What about the pandas Index?
Avoiding the UserWarning error while using Pandas group_by
Column names
Boolean columns
Null/NaN handling
Overhead
Perfect backwards compatibility policy
Extensions and Plugins
How it works
Ecosystem
Security
Resources
API Completeness
API Completeness
Supported Top-level functions
Supported DataFrame methods
Supported LazyFrame methods
Supported Expr methods
Supported Expr.cat methods
Supported Expr.dt methods
Supported Expr.list methods
Supported Expr.name methods
Supported Expr.str methods
Supported Expr.struct methods
Supported Series methods
Supported Series.cat methods
Supported Series.dt methods
Supported Series.list methods
Supported Series.str methods
Supported Series.struct methods
API Reference
API Reference
Top-level functions
narwhals.DataFrame
narwhals.Expr
narwhals.Expr.cat
narwhals.Expr.dt
narwhals.Expr.list
narwhals.Expr.name
narwhals.Expr.str
narwhals.Expr.struct
narwhals.GroupBy
narwhals.LazyGroupBy
narwhals.LazyFrame
narwhals.Schema
narwhals.Series
narwhals.Series.cat
narwhals.Series.dt
narwhals.Series.list
narwhals.Series.str
narwhals.Series.struct
narwhals.dependencies
narwhals.Implementation
narwhals.dtypes
narwhals.exceptions
narwhals.selectors
narwhals.testing
narwhals.typing
narwhals.utils
This
series.cat.SeriesCatNamespace
Method
arrow
pandas-like
polars
get_categories
Back to top
