pyarrow.Field¶

class pyarrow.Field¶

Bases: pyarrow.lib._Weakrefable

A named field, with a data type, nullability, and optional metadata.

Notes

Do not use this class’s constructor directly; use pyarrow.field

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

Methods

`__init__`(args, *kwargs)	Initialize self.
`add_metadata`(self, metadata)
`equals`(self, Field other, …)	Test if this field is equal to the other
`flatten`(self)	Flatten this field.
`remove_metadata`(self)	Create new field without metadata, if any
`with_metadata`(self, metadata)	Add metadata as dict of string keys and values to Field
`with_name`(self, name)	A copy of this field with the replaced name
`with_nullable`(self, nullable)	A copy of this field with the replaced nullability
`with_type`(self, DataType new_type)	A copy of this field with the replaced type

Attributes

equals(self, Field other, bool check_metadata=False)¶

Test if this field is equal to the other

Parameters

other (pyarrow.Field) –
check_metadata (bool, default False) – Whether Field metadata equality should be checked as well.

Returns

is_equal (bool)

flatten(self)¶

Flatten this field. If a struct field, individual child fields will be returned with their names prefixed by the parent’s name.

remove_metadata(self)¶

Create new field without metadata, if any

with_metadata(self, metadata)¶

Add metadata as dict of string keys and values to Field

Parameters: metadata (dict) – Keys and values must be string-like / coercible to bytes
Returns: field (pyarrow.Field)

with_name(self, name)¶

A copy of this field with the replaced name

with_nullable(self, nullable)¶

A copy of this field with the replaced nullability

with_type(self, DataType new_type)¶

A copy of this field with the replaced type

pyarrow.Decimal128Type

pyarrow.Schema