Arrays and Scalars

Factory Functions

These functions create new Arrow arrays:

array(obj[, type, mask, size, from_pandas])	Create pyarrow.Array instance from a Python object.
nulls(size[, type])	Create a strongly-typed Array instance with all elements null.

Array Types

An array’s Python class depends on its data type. Concrete array classes may expose data type-specific methods or properties.

Array()	The base class for all Arrow arrays.
BooleanArray	Concrete class for Arrow arrays of boolean data type.
FloatingPointArray	A base class for Arrow floating-point arrays.
IntegerArray	A base class for Arrow integer arrays.
Int8Array	Concrete class for Arrow arrays of int8 data type.
Int16Array	Concrete class for Arrow arrays of int16 data type.
Int32Array	Concrete class for Arrow arrays of int32 data type.
Int64Array	Concrete class for Arrow arrays of int64 data type.
NullArray	Concrete class for Arrow arrays of null data type.
NumericArray	A base class for Arrow numeric arrays.
UInt8Array	Concrete class for Arrow arrays of uint8 data type.
UInt16Array	Concrete class for Arrow arrays of uint16 data type.
UInt32Array	Concrete class for Arrow arrays of uint32 data type.
UInt64Array	Concrete class for Arrow arrays of uint64 data type.
BinaryArray	Concrete class for Arrow arrays of variable-sized binary data type.
StringArray	Concrete class for Arrow arrays of string (or utf8) data type.
FixedSizeBinaryArray	Concrete class for Arrow arrays of a fixed-size binary data type.
LargeBinaryArray	Concrete class for Arrow arrays of large variable-sized binary data type.
LargeStringArray	Concrete class for Arrow arrays of large string (or utf8) data type.
Time32Array	Concrete class for Arrow arrays of time32 data type.
Time64Array	Concrete class for Arrow arrays of time64 data type.
Date32Array	Concrete class for Arrow arrays of date32 data type.
Date64Array	Concrete class for Arrow arrays of date64 data type.
TimestampArray	Concrete class for Arrow arrays of timestamp data type.
Decimal128Array	Concrete class for Arrow arrays of decimal128 data type.
DictionaryArray	Concrete class for dictionary-encoded Arrow arrays.
ListArray	Concrete class for Arrow arrays of a list data type.
LargeListArray	Concrete class for Arrow arrays of a large list data type.
StructArray	Concrete class for Arrow arrays of a struct data type.
UnionArray	Concrete class for Arrow arrays of a Union data type.
ExtensionArray	Concrete class for Arrow extension arrays.

Scalars

This function constructs a new Arrow scalar:

scalar(value[, type, from_pandas])

Create a pyarrow.Scalar instance from a Python object.

A scalar’s python class depends on its data type. Concrete scalar classes may expose data type-specific methods or properties.

NA	NullScalar()
Scalar()	The base class for scalars.
BooleanScalar	Concrete class for boolean scalars.
Int8Scalar	Concrete class for int8 scalars.
Int16Scalar	Concrete class for int16 scalars.
Int32Scalar	Concrete class for int32 scalars.
Int64Scalar	Concrete class for int64 scalars.
UInt8Scalar	Concrete class for uint8 scalars.
UInt16Scalar	Concrete class for uint16 scalars.
UInt32Scalar	Concrete class for uint32 scalars.
UInt64Scalar	Concrete class for uint64 scalars.
FloatScalar	Concrete class for float scalars.
DoubleScalar	Concrete class for double scalars.
BinaryScalar	Concrete class for binary-like scalars.
StringScalar	Concrete class for string-like (utf8) scalars.
FixedSizeBinaryScalar
LargeBinaryScalar
LargeStringScalar
Time32Scalar	Concrete class for time32 scalars.
Time64Scalar	Concrete class for time64 scalars.
Date32Scalar	Concrete class for date32 scalars.
Date64Scalar	Concrete class for date64 scalars.
TimestampScalar	Concrete class for timestamp scalars.
Decimal128Scalar	Concrete class for decimal128 scalars.
DictionaryScalar	Concrete class for dictionary-encoded scalars.
ListScalar	Concrete class for list-like scalars.
LargeListScalar
StructScalar	Concrete class for struct scalars.
UnionScalar	Concrete class for Union scalars.

pyarrow.types.is_dictionary pyarrow.array