numpy.dtype

class numpy.dtype [source]

Attributes

alignment

The required alignment (bytes) of this data-type according to the compiler.

base

Returns dtype for the base element of the subarrays, regardless of their dimension or shape.

byteorder

A character indicating the byte-order of this data-type object.

char

A unique character code for each of the 21 different built-in types.

descr

__array_interface__ description of the data-type.

fields

Dictionary of named fields defined for this data type, or None.

flags

Bit-flags describing how this data type is to be interpreted.

hasobject

Boolean indicating whether this dtype contains any reference-counted objects in any fields or sub-dtypes.

isalignedstruct

Boolean indicating whether the dtype is a struct which maintains field alignment.

isbuiltin

Integer indicating how this dtype relates to the built-in dtypes.

isnative

Boolean indicating whether the byte order of this dtype is native to the platform.

itemsize

The element size of this data-type object.

kind

A character code (one of ‘biufcmMOSUV’) identifying the general kind of data.

metadata

Either None or a readonly dictionary of metadata (mappingproxy).

name

A bit-width name for this data-type.

names

Ordered list of field names, or None if there are no fields.

ndim

Number of dimensions of the sub-array if this data type describes a sub-array, and 0 otherwise.

num

A unique number for each of the 21 different built-in types.

shape

Shape tuple of the sub-array if this data type describes a sub-array, and () otherwise.

str

The array-protocol typestring of this data-type object.

subdtype

Tuple (item_dtype, shape) if this dtype describes a sub-array, and None otherwise.

type

Methods

newbyteorder([new_order])

Return a new dtype with a different byte order.