range小数

You can also use the NumPy library (which isn't part of standard library but is relatively easy to obtain) which has the arange function:

>>> import numpy as np
>>> np.arange(0,1,0.1)
array([ 0. ,  0.1,  0.2,  0.3,  0.4,  0.5,  0.6,  0.7,  0.8,  0.9])

as well as the linspace function which lets you have control over what happens at the endpoint (non-trivial for floating point numbers when things won't always divide into the correct number of "slices"):

>>> np.linspace(0,1,11)
array([ 0. ,  0.1,  0.2,  0.3,  0.4,  0.5,  0.6,  0.7,  0.8,  0.9,  1. ])>>> np.linspace(0,1,10,endpoint=False)
array([ 0. ,  0.1,  0.2,  0.3,  0.4,  0.5,  0.6,  0.7,  0.8,  0.9])

来源： http://stackoverflow.com/questions/477486/python-decimal-range-step-value

来自为知笔记(Wiz)