[Numpy-discussion] Number of digits

Robert Kern robert.kern at gmail.com
Mon Jul 10 08:46:33 CDT 2006


Tim Hochberg wrote:
> Nils Wagner wrote:
>> Hi all,
>>
>> how can I increase the number of digits in the output of str(.) ?
>>   
> You can't as far as I know. For floats, you can use "%.nf". For example:
> 
> "%.13f" % 493.4802200544680

The problem is is that he doesn't have a float. He has one of our float64scalar 
objects. The str() of a real Python float will give as many digits as are 
necessary to recreate number and no more (or maybe one or two more). A str() of 
a float64scalar will round according to some rule that I haven't figured out, 
yet. It doesn't seem to be configurable with numpy.set_printoptions().

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco





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