import numpy as np

x = np.arange(5)

print (x)

import numpy as np

# 设置了 dtype

x = np.arange(5, dtype =  float)

print (x)

import numpy as np

x = np.arange(10,20,2)

print (x)

import numpy as np

a = np.linspace(1,10,10)

print(a)

import numpy as np

a = np.linspace(1,1,10)

print(a)

import numpy as np

a = np.linspace(10, 20,  5, endpoint =  False)

print(a)

import numpy as np

a =np.linspace(1,10,10,retstep= True)

print(a)

# 拓展例子

b =np.linspace(1,10,10).reshape([10,1])

print(b)

import numpy as np

# 默认底数是 10

a = np.logspace(1.0,  2.0, num =  10)

print (a)

import numpy as np

a = np.logspace(0,9,10,base=2)

print (a)