[Numpy-discussion] attributes of scalar types - e.g. numpy.int32.itemsize
Travis Oliphant
oliphant.travis at ieee.org
Fri Aug 18 13:38:17 CDT 2006
Sebastian Haase wrote:
> Hi,
> array dtype descriptors have an attribute itemsize that gives the total
> number of bytes required for an item of that dtype.
>
> Scalar types, like numy.int32, also have that attribute,
> but it returns "something else" - don't know what:
>
>
> Furthermore there are *lot's* of more attributes to a scalar dtype, e.g.
>
The scalar types are actual Python types (classes) whereas the dtype
objects are instances.
The attributes you are seeing of the typeobject are very useful when you
have an instance of that type.
With numpy.int32.itemsize you are doing the equivalent of
numpy.dtype.itemsize
-Travis
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