A very important function of NumPy is to operate multi-dimensional arrays. Multi-dimensional array objects are also called ndarray. We can perform a series of complex mathematical operations on the basis of ndarray. This article will introduce some basic and common ndarray operations, which you can...
defis_multi_dimensional_array(arr):ifisinstance(arr,list)andlen(arr)>0andisinstance(arr[0],list):returnTruereturnFalsearray1=[1,2,3]array2=[[1,2],[3,4]]array3=[[[1,2],[3,4]],[[5,6],[7,8]]]print(is_multi_dimensional_array(array1))# 输出 Falseprint(is_multi_dimensional_a...
下面是一个递归方法的示例代码: defis_multi_dimensional_array(arr):ifisinstance(arr,list):ifany(isinstance(sub_arr,list)forsub_arrinarr):returnTruereturnFalsearr3=[1,[2,3],4,[5,6,7]]ifis_multi_dimensional_array(arr3):print("arr3 是多维数组")else:print("arr3 不是多维数组") 1. 2....
With multi-dimensional arrays, you can use the colon character in place of a fixed value for an index, which means that the array elements corresponding to all values of that particular index will be returned. 对于多维数组,可以使用冒号字符代替索引的固定值,这意味着将返回与该特定索引的所有值对应...
NumPy: array processing for numbers, strings, records, and objects. NumPy is a general-purpose array-processing package designed to efficiently manipulate large multi-dimensional arrays of arbitrary records without sacrificing too much speed for small multi-dimensional arrays. NumPy is built ...
Numpy 数组的运算,更简洁且高效。 0. 导入 NumPy 包 导入Numpy 包 用as 语句倒入numpy包,后面用简写的 np ,就可以使用了。 1. 创建 NumPy 数组 numpy 的一个重要对象 (object) 是ndarray, 也称 NumPy 数组 • ndarray 是 Multidimensional Array 的缩写,中文称为多 (multi) 维 (dimensional) 数组(array)...
With multi-dimensional arrays, you can use the colon character in place of a fixed value for an index, which means that the array elements corresponding to all values of that particular index will be returned. 对于多维数组,可以使用冒号字符代替索引的固定值,这意味着将返回与该特定索引的所有值对应...
array([('Rex', 9, 81.), ('Fido', 3, 27.)], dtype=[('name', '<U10'), ('age', '<i4'), ('weight', '<f4')]) x is a 1-dimensional array, each element contains three fields, name, age and weight. And specify their data types separately. ...
(values)values=np.random.randn(5)# 产生5个随机数,均值为0,标准差为1,服从标准正态分布print(values)# randomly shuffle a nd array.# only shuffles the array along the first axis of a multi-dimensional arrayarr=np.array([[1,2,3],[4,5,6],[7,8,9]])#np.random.shuffle(arr)print(arr...
a powerful N-dimensional array object sophisticated (broadcasting) functions tools for integrating C/C++ and Fortran code useful linear algebra, Fourier transform, and random number capabilities Besides its obvious scientific uses, NumPy can also be used as an efficient multi-dimensional container of ge...