其他方式创建数组

#导入numpy模块
import numpy as np 
#zeros
def zerosTest():
    a = np.zeros(5)
    print(a)
    #指定类型
    b = np.zeros((5,),dtype=int)
    print(b)
    #创建二维数组
    c = np.zeros((3,4))
    print(c)
    print('********************************************')

#ones
def oneTest():
    a = np.ones(10)
    print(a)
    b = np.ones((2,5),dtype=int)
    print(b)
    print('********************************************')

#empty
def emptyTest():
    a = np.empty(8)
    print(a)
    b = np.empty((3,4))
    print(b)
    print('********************************************')

#linespace
def linespaceTest():
    a = np.linspace(1,10,11)
    print(a)
    b = np.linspace(5,20,5,endpoint=False) 
    print(b)
    print('********************************************')

#logspace
def logspaceTest():
    a = np.logspace(0,9,10,base=2)
    print(a)
    print('********************************************')

zerosTest()
oneTest()
emptyTest()
linespaceTest()
logspaceTest()

[0. 0. 0. 0. 0.]
[0 0 0 0 0]
[[0. 0. 0. 0.]
 [0. 0. 0. 0.]
 [0. 0. 0. 0.]]
********************************************
[1. 1. 1. 1. 1. 1. 1. 1. 1. 1.]
[[1 1 1 1 1]
 [1 1 1 1 1]]
********************************************
[ 0.00000000e+000  0.00000000e+000  0.00000000e+000  0.00000000e+000
  0.00000000e+000  4.66397970e-321 -1.73027284e+181 -3.36359056e-224]
[[0. 0. 0. 0.]
 [0. 0. 0. 0.]
 [0. 0. 0. 0.]]
********************************************
[ 1.   1.9  2.8  3.7  4.6  5.5  6.4  7.3  8.2  9.1 10. ]
[ 5.  8. 11. 14. 17.]
********************************************
[  1.   2.   4.   8.  16.  32.  64. 128. 256. 512.]
********************************************