Python3 Library NumPy How to view array properties

The following for you to share a Python3 library NumPy array properties of the viewing method, with a good reference value, I hope to help you. Come and see it together.

The examples are as follows:

Import NumPy as NPA1 = Np.array ([1,2,3,4],dtype=np.complex128) print (A1) print ("Data type", type (A1))      #打印数组数据类型print (" Array element data type: ", A1.dtype) #打印数组元素数据类型print (" Total number of elements of the array: ", a1.size)   #打印数组尺寸, that is, the total number of array elements print (" array shape: ", A1.shape)     # Prints the array shape print ("Number of dimensions of the array", A1.ndim)   #打印数组的维度数目

However, it is more convenient to construct a function that can display array properties at once

Import NumPy as Npdef arrayinfo (A1): "" "one-time  rendering of an array of many information" ""  a2 = Np.array ([up])           #创建一个参照物数组  if type (a1)! = Type (A2):         #判断传入参数是否为数组类型    Print ("It's Not a Numpy.ndarray")    return None  print (A1)  Print ("Data type" , type (A1))      #打印数组数据类型  print ("array element data type:", A1.dtype) #打印数组元素数据类型  Print ("Total number of array elements:", a1.size)   # Prints the array size, that is, the total number of array elements  print ("Array shape:", A1.shape)     #打印数组形状  Print ("Number of dimensions of the array", A1.ndim)   # Number of dimensions of the printed array arrayinfo (A1)