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Input/output¶

CSV¶

`read_csv`(file[, has_header, columns, ...])	Read a CSV file into a Dataframe.
`scan_csv`(file[, has_header, sep, ...])	Lazily read from a CSV file or multiple files via glob patterns.
`DataFrame.write_csv`([file, has_header, sep, ...])	Write Dataframe to comma-separated values file (csv).

Feather/ IPC¶

`read_ipc`(file[, columns, n_rows, ...])	Read into a DataFrame from Arrow IPC (Feather v2) file.
`scan_ipc`(file[, n_rows, cache, rechunk, ...])	Lazily read from an Arrow IPC (Feather v2) file or multiple files via glob patterns.
`read_ipc_schema`(file)	Get a schema of the IPC file without reading data.
`DataFrame.write_ipc`(file[, compression])	Write to Arrow IPC binary stream, or a feather file.

Parquet¶

`read_parquet`(source[, columns, n_rows, ...])	Read into a DataFrame from a parquet file.
`scan_parquet`(file[, n_rows, cache, ...])	Lazily read from a parquet file or multiple files via glob patterns.
`DataFrame.write_parquet`(file[, compression, ...])	Write the DataFrame disk in parquet format.

SQL¶

read_sql(sql, connection_uri[, ...])

Read a SQL query into a DataFrame.

JSON¶

`read_json`(source[, json_lines])	Read into a DataFrame from JSON format.
`DataFrame.write_json`()	Serialize to JSON representation.

AVRO¶

`read_avro`(file[, columns, n_rows])	Read into a DataFrame from Apache Avro format.
`DataFrame.write_avro`(file[, compression])	Write to Apache Avro file.

Datasets¶

Connect to pyarrow datasets.

API reference polars.read_csv