David Cournapeau wrote:
>> However, is there a more direct way of directly transforming bytes
>> into a np.int32 type without the intermediate 'struct.unpack' step?
>
> Assuming you have an array of bytes, you could just use view:
>
> # x is an array of bytes, whose length is a multiple of 4
> x.view(np.int32)
and if you don't have an array, you can use one of:
np.fromstring
np.frombuffer
np.fromfile
they all take a dtype as a parameter. For your example:
> bytes = f.read(4)
> i = struct.unpack('>i', bytes)[0]
i = np.fromfile(f, dtype=np.int32, count=1)
and, of course, you cold read a lot more than one number in at once.
-Chris
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
chris.bar...@noaa.gov
_______________________________________________
NumPy-Discussion mailing list
NumPy-Discussion@scipy.org
http://mail.scipy.org/mailman/listinfo/numpy-discussion
