start : [可选]区间范围的开始。默认情况下，start = 0
stop :间隔范围的结束。
step : [可选]区间的步长。默认情况下，步长=1。 
对于任何输出，这是两个相邻值之间的距离，out[i+1] - out[i]。
dtype :输出阵列的类型

间隔均匀的值的阵列。
被生成的数组的长度= Ceil((Stop - Start) / Step)

# Python Programming illustrating
# numpy.arange method
 
import numpy as geek
 
print("A\n", geek.arange(4).reshape(2, 2), "\n")
print("A\n", geek.arange(4, 10), "\n")
print("A\n", geek.arange(4, 20, 3), "\n")

A
 [[0 1]
 [2 3]]

A
 [4 5 6 7 8 9]

A
 [ 4  7 10 13 16 19]

# Python Programming illustrating
# numpy.arange method
 
import numpy as np
 
# Printing all numbers from 1 to
# 2 in steps of 0.1
print(np.arange(1, 2, 0.1))

[1.  1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9]