[Numpy-discussion] attributes of scalar types - e.g. numpy.int32.itemsize
oliphant.travis at ieee.org
Fri Aug 18 17:25:47 CDT 2006
Sebastian Haase wrote:
> On Friday 18 August 2006 11:38, Travis Oliphant wrote:
>> Sebastian Haase wrote:
>>> 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
> but why then do I not get the result 4 ?
Because it's not a "class" attribute, it's an instance attribute.
What does numpy.dtype.itemsize give you?
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