Data Types

The default floating point type is float32 and the default integer type is int32. The table below shows supported values for Dtype.

Supported Data Types

Type	Bytes	Description
bool_	1	Boolean (True, False) data type
uint8	1	8-bit unsigned integer
uint16	2	16-bit unsigned integer
uint32	4	32-bit unsigned integer
uint64	8	64-bit unsigned integer
int8	1	8-bit signed integer
int16	2	16-bit signed integer
int32	4	32-bit signed integer
int64	8	64-bit signed integer
bfloat16	2	16-bit brain float (e8, m7)
float16	2	16-bit IEEE float (e5, m10)
float32	4	32-bit float
complex64	8	64-bit complex float

Data type are aranged in a hierarchy. See the DtypeCategory object documentation for more information. Use issubdtype() to determine if one dtype (or category) is a subtype of another category.

Dtype	An object to hold the type of a array.
DtypeCategory	Type to hold categories of dtypes.
issubdtype(-> bool  -> bool  -> bool)	Check if a Dtype or DtypeCategory is a subtype of another.