Re: [Numpy-discussion] OverflowError: long too big to convert

1 May 2007


      OK...so just for future reference...does a Numpy 'long' not directly 
correspond to a Python 'long'?
Robert Kern wrote:
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Mark.Miller wrote:
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Can someone explain this?  I can't seem to coerce numpy into storing 
large integer values.  I'm sure that I'm just overlooking something 
simple...
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import numpy
a='1'*300
type(a)
<type 'str'>
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b=int(a)
type(b)
<type 'long'>
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c=numpy.empty((2,2),long)
c[:]=b
Traceback (most recent call last):
   File "<pyshell#15>", line 1, in <module>
     c[:]=b
OverflowError: long too big to convert
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Use object arrays explicitly:
c = numpy.empty((2, 2), dtype=object)
Using dtype=long gets interpreted as requesting the largest available integer
type (or maybe just int64, I'm not sure). Those aren't unbounded.