Data types

DataType

DataType

Base class for all Polars data types.

Numeric

Decimal	Decimal 128-bit type with an optional precision and non-negative scale.
Float32	32-bit floating point type.
Float64	64-bit floating point type.
Int8	8-bit signed integer type.
Int16	16-bit signed integer type.
Int32	32-bit signed integer type.
Int64	64-bit signed integer type.
UInt8	8-bit unsigned integer type.
UInt16	16-bit unsigned integer type.
UInt32	32-bit unsigned integer type.
UInt64	64-bit unsigned integer type.

Temporal

Date	Data type representing a calendar date.
Datetime	Data type representing a calendar date and time of day.
Duration	Data type representing a time duration.
Time	Data type representing the time of day.

Nested

Array(inner, width)	Fixed length list type.
List(inner)	Variable length list type.
Struct(fields)	Struct composite type.

String

String	UTF-8 encoded string type.
Categorical	A categorical encoding of a set of strings.
Enum	A fixed set categorical encoding of a set of strings.
Utf8	alias of String

Other

Binary	Binary type.
Boolean	Boolean type.
Null	Data type representing null values.
Object	Data type for wrapping arbitrary Python objects.
Unknown	Type representing DataType values that could not be determined statically.