[Numpy-discussion] TypeError when multiplying float64 and a big integer in Python 3.

Warren Weckesser warren.weckesser@gmail....
Sun Jun 16 11:58:57 CDT 2013


On Sun, Jun 16, 2013 at 12:56 PM, Warren Weckesser <
warren.weckesser@gmail.com> wrote:

> With Python 3.3.2 (64 bit), and numpy master:
>
> >>> import numpy as np
> >>> np.__version__
> '1.8.0.dev-2a5c2c8'
>
> >>> f = np.float64(1.0)
> >>> i = 2**65
> >>> f*i
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> TypeError: unsupported operand type(s) for *: 'numpy.float64' and 'int'
>
> Is this the expected behavior?
>
> The error does not occur with integers that fit in 64 bits:
>
> >>> f*10
> 10.0
>
> It also does not occur in numpy 1.7.1.
>
>

I should have checked the issues on github before mailing the list:
https://github.com/numpy/numpy/issues/3442

Warren



> Warren
>
>
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