On 7/4/05, Kuner Martin <[EMAIL PROTECTED]> wrote:
>
>
> Hi list,
>
> I have the following code to call a LabVIEW VI via the Activex interface.
> The string "strDataOut" holds the expected data result of the call .
> Now I realized that the string coming back from the ActiveX call contains
> Unicode and that is fatal!
> The string on the Python side should always be ASCII.
> I found no way to convert them back, strDataOut.enocde() raises a exception
> when I try to convert to ASCII
Which encoding do you use with strDataOut.encode(...) ?
>
> Here´s the relevant code.
>
> intCmdcnt = 0;
> strDataOut = r""
> cluError = [False,0,""]
> cluSenseKey = [0,0,0]
> print "strDataOut = %r" % strDataOut
>
> arParNames =
> ["intChannel","strCDB","strDataIn","intDirection",
> "intLength","cluError","cluSenseKey","intCmdcnt","strDataOut"]
>
> arParVals = [0, strCDB, strBuffer, intDataToHost,intBuffLen,
> cluError, cluSenseKey, intCmdcnt, strDataOut]
>
> retval = self.__refGenericATAPI.Call(arParNames,
> arParVals) # call VI
> print retval
>
> The printout:
> strDataOut = ''
> ((u'intChannel', u'strCDB', u'strDataIn', u'intDirection', u'intLength',
> u'cluError', u'cluSenseKey', u'intCmdcnt', u'strDataOut'), (0,
> u'\xa8\x08\x00\x10\x00\x00\x00\x00\x00\x10\x00\x00', u'',
> 1, 16, (False, 0, u''), (0, 0, 0), 37,
> u'\x00\x00\x01\xbaD\xa5?\x14\x0c\xab\x01\u2030\xc3\xf8\x00\x00'))
>
> Here´s another data example:
>
> String on LabVIEW side :
> 00 00 01 BA 44 A5 3F 14 0C AB 01 89 C3 F8 00 00
> String on python side
>
> u'\x00\x00\x01\xbaD\xa5?\x14\x0c\xab\x01\u2030\xc3\xf8\x00\x00'
>
> Any ideas ?
LabVIEW seems to use cp1252 encoding:
>>> s = u'\x00\x00\x01\xbaD\xa5?\x14\x0c\xab\x01\u2030\xc3\xf8\x00\x00'
>>> s.encode('cp1252')
'\x00\x00\x01\xbaD\xa5?\x14\x0c\xab\x01\x89\xc3\xf8\x00\x00'
Does this string look familiar? :)
- kv
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