struct.unpack

g.franzkowiak g.franzkowiak at onlinehome.de
Mon Oct 3 17:48:47 CEST 2005


Peter Otten schrieb:
> g.franzkowiak wrote:
> 
> 
>>The dataObject was read from a named pipe as an byte stream
>>
>>state, dataObject = win32file.ReadFile(handle, nbytes, None)
>>print repr(dataObject)
>> ==> '\x01\x02\x03\x04\x00\x00\x00\x00\x00\x00\x0.....
>>
>>With Frederiks help operates this fine
> 
> 
> I do not doubt that. My point was that instead of the suggested
> 
> # Fredrik
> obj = "".join(list(dataObject[:4]))
> 
> the simpler
> 
> # me
> obj = dataObject[:4]
> 
> might work as well. I cannot test it here, but judging from 
> 
> http://aspn.activestate.com/ASPN/docs/ActivePython/2.3/pywin32/win32file__ReadFile_meth.html
> 
> the resulting dataObject is a buffer and buffer slices seem to be just
> strings.
> 
> 
>>print repr(dataObject)
>> ==> '\x01\x02\x03\x04\x00\x00\x00\x00\x00\x00\x0.....
> 
> 
> Hmm, that looks as if dataObject were a string -- please post the result of
> 
> print type(dataObject)
> 
> just to help me restore my peace of mind :-)
> 
> Peter
> 

Hello Peter,

was a node in my mind, the data comes as a string (with readfile always)
<< type(dataObject) = 'str' >>  and
<< type(dataObject:4) = 'str' >> also ;-)

I've dropped the loop with list/join and the result is the same.
Thank you  :-))

gerd




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