python中zeros用法_python中的使用方法

时间:2025-02-15 10:25:16

python 的 python中numpy.zeros()的使用方法

翻译

用法:zeros(shape, dtype=float, order='C')

返回:返回来一个给定形状和类型的用0填充的数组

参数:shape:形状

dtype:数据类型,可选参数,默认numpy.float64

dtype类型:

t ,位域,如t4代表4位

b,布尔值,true or false

i,整数,如i8(64位)

u,无符号整数,u8(64位)

f,浮点数,f8(64位)

c,浮点负数,

o,对象,

s,a,字符串,s24

u,unicode,u24

order:可选参数,c代表与c语言类似,行优先;F代表列优先

例子:

(5)

array([ 0., 0., 0., 0., 0.])

((5,), dtype=)

array([0, 0, 0, 0, 0])

((2, 1))

array([[ 0.],

[ 0.]])

s = (2,2)

(s)

array([[ 0., 0.],

[ 0., 0.]])

((2,), dtype=[('x', 'i4'), ('y', 'i4')]) # custom dtype

array([(0, 0), (0, 0)],

dtype=[('x', '

########################################################

zeros(shape, dtype=float, order='C')

Return a new array of given shape and type, filled with zeros.

Parameters

----------

shape : int or sequence of ints

Shape of the new array, ., ``(2, 3)`` or ``2``.

dtype : data-type, optional

The desired data-type for the array, ., `numpy.int8`. Default is

`numpy.float64`.

order : {'C', 'F'}, optional

Whether to store multidimensional data in C- or Fortran-contiguous

(row- or column-wise) order in memory.

Returns

-------

out : ndarray

Array of zeros with the given shape, dtype, and order.

See Also

--------

zeros_like : Return an array of zeros with shape and type of input.

ones_like : Return an array of ones with shape and type of input.

empty_like : Return an empty array with shape and type of input.

ones : Return a new array setting values to one.

empty : Return a new uninitialized array.

Examples

--------

(5)

array([ 0., 0., 0., 0., 0.])

((5,), dtype=)

array([0, 0, 0, 0, 0])

((2, 1))

array([[ 0.],

[ 0.]])

s = (2,2)

(s)

array([[ 0., 0.],

[ 0., 0.]])

((2,), dtype=[('x', 'i4'), ('y', 'i4')]) # custom dtype

array([(0, 0), (0, 0)],

dtype=[('x', '

Type: builtin_function_or_method

以上这篇python中()的使用方法就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。