Python API reference

This page gives a high-level overview of all public Polars objects, functions and methods. All classes and functions exposed in the polars.* namespace are public.

• DataFrame

• LazyFrame

• Series

• Expressions
• Selectors
  • Importing
  • Set operations
  • Functions

• Functions
  • Conversion
  • Miscellaneous
  • Parallelization
  • Random
  • StringCache

• Data types
  • DataType
  • Numeric
  • Temporal
  • Nested
  • String
  • Other
• Schema

• Input/output
  • Avro
  • Clipboard
  • CSV
  • Database
  • Delta Lake
  • Excel / ODS
  • Feather / IPC
  • Iceberg
  • JSON
  • Parquet
  • PyArrow Datasets
  • Cloud Credentials

• Config
  • Config options
  • Config load, save, state
  • Use as a context manager
  • Use as a decorator
  • Multiple Config instances

• Extending the API
  • Providing new functionality
  • Available registrations
  • Examples

• Plugins

• SQL Interface
  • Python API
  • SQL Clauses
  • SQL Functions
  • Set Operations
  • Table Operations

• Exceptions

• Testing
  • Asserts
  • Parametric testing

• Metadata