pyarrow.csv.ReadOptions¶

class pyarrow.csv.ReadOptions(use_threads=None, *, block_size=None, skip_rows=None, column_names=None, autogenerate_column_names=None, encoding='utf8', skip_rows_after_names=None)¶

Bases: pyarrow.lib._Weakrefable

Options for reading CSV files.

Parameters

use_threads (bool, optional (default True)) – Whether to use multiple threads to accelerate reading
block_size (int, optional) – How much bytes to process at a time from the input stream. This will determine multi-threading granularity as well as the size of individual record batches or table chunks. Minimum valid value for block size is 1
skip_rows (int, optional (default 0)) – The number of rows to skip before the column names (if any) and the CSV data.
skip_rows_after_names (int, optional (default 0)) – The number of rows to skip after the column names. This number can be larger than the number of rows in one block, and empty rows are counted. The order of application is as follows: - skip_rows is applied (if non-zero); - column names aread (unless column_names is set); - skip_rows_after_names is applied (if non-zero).
column_names (list, optional) – The column names of the target table. If empty, fall back on autogenerate_column_names.
autogenerate_column_names (bool, optional (default False)) – Whether to autogenerate column names if column_names is empty. If true, column names will be of the form “f0”, “f1”… If false, column names will be read from the first CSV row after skip_rows.
encoding (str, optional (default 'utf8')) – The character encoding of the CSV data. Columns that cannot decode using this encoding can still be read as Binary.

__init__(*args, **kwargs)¶: Initialize self. See help(type(self)) for accurate signature.

Methods

`__init__`(args, *kwargs)	Initialize self.
`equals`(self, ReadOptions other)
`validate`(self)

Attributes

`autogenerate_column_names`	Whether to autogenerate column names if column_names is empty.
`block_size`	How much bytes to process at a time from the input stream.
`column_names`	The column names of the target table.
`encoding`	object
`skip_rows`	The number of rows to skip before the column names (if any) and the CSV data.
`skip_rows_after_names`	The number of rows to skip after the column names.
`use_threads`	Whether to use multiple threads to accelerate reading.

autogenerate_column_names¶: Whether to autogenerate column names if column_names is empty. If true, column names will be of the form “f0”, “f1”… If false, column names will be read from the first CSV row after skip_rows.

block_size¶: How much bytes to process at a time from the input stream. This will determine multi-threading granularity as well as the size of individual record batches or table chunks.

column_names¶: The column names of the target table. If empty, fall back on autogenerate_column_names.

encoding¶

object

Type: encoding

equals(self, ReadOptions other)¶

skip_rows¶: The number of rows to skip before the column names (if any) and the CSV data. See skip_rows_after_names for interaction description

skip_rows_after_names¶: The number of rows to skip after the column names. This number can be larger than the number of rows in one block, and empty rows are counted. The order of application is as follows: - skip_rows is applied (if non-zero); - column names aread (unless column_names is set); - skip_rows_after_names is applied (if non-zero).

use_threads¶: Whether to use multiple threads to accelerate reading.

validate(self)¶

pyarrow.csv.ParseOptions

pyarrow.csv.WriteOptions