python - numpy.arange divide by zero errror -


i have used numpy's arange funciton make following range:

a = n.arange(0,5,1/2)

this variable works fine itself, when try putting anywhere in script error says 

zerodivisionerror: division 0

first, step evaluates 0 (on python 2.x is). second, may want check np.linspace if want use non-integer step.

docstring: arange([start,] stop[, step,], dtype=none)  return evenly spaced values within given interval.  [...]  when using non-integer step, such 0.1, results not consistent.  better use ``linspace`` these cases. 
in [1]: import numpy np  in [2]: 1/2 out[2]: 0  in [3]: 1/2. out[3]: 0.5  in [4]: np.arange(0, 5, 1/2.)  # use float out[4]: array([ 0. ,  0.5,  1. ,  1.5,  2. ,  2.5,  3. ,  3.5,  4. ,  4.5])

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