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Re: [Linux-gpib-general] python3.10 breaking changes
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From: Lee N. <ln...@ne...> - 2022-06-27 05:53:45
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Oi! This explains why it seemed to suddenly appear even though I had been using 3.10 all along. In an attempt to solve another problem, I switched from svn to the tarball. On Sun, Jun 26, 2022 at 10:29 PM dave penkler <dpe...@gm...> wrote: > The patch to define the PY_SSIZE_T_CLEAN macro from mika was added in > r1990 so the svn should be OK. > > On Mon, 27 Jun 2022 at 05:11, Lee Nelson <ln...@ne...> wrote: > >> There seems to be a breaking change introduced in Python3.10: >> https://docs.python.org/3.10/whatsnew/3.10.html#id2 >> https://peps.python.org/pep-0353/ >> >> It appears to be in gpibinter.c and results in an error like this: >> 2022-06-26 19:03:45,730 - pyvisa - DEBUG - GPIB0::5::INSTR - opening ... >> >> >> 2022-06-26 19:03:45,735 - pyvisa - DEBUG - GPIB0::5::INSTR - is open with >> session 1840975 >> >> 2022-06-26 19:03:45,735 - pyvisa - DEBUG - GPIB.write b'*IDN?\r\n' >> >> >> Traceback (most recent call last): >> >> >> File "/home/lnelson/test_gpib.py", line 6, in <module> >> >> >> my_instrument.query("*IDN?") >> >> >> File >> "/usr/local/lib/python3.10/dist-packages/pyvisa/resources/messagebased.py", >> line 642, in query >> >> self.write(message) >> >> >> File >> "/usr/local/lib/python3.10/dist-packages/pyvisa/resources/messagebased.py", >> line 197, in write >> >> count = self.write_raw(message.encode(enco)) >> >> >> File >> "/usr/local/lib/python3.10/dist-packages/pyvisa/resources/messagebased.py", >> line 157, in write_raw >> >> return self.visalib.write(self.session, message)[0] >> >> >> File "/usr/local/lib/python3.10/dist-packages/pyvisa_py/highlevel.py", >> line 543, in write >> >> written, status_code = self.sessions[session].write(data) >> >> >> File "/usr/local/lib/python3.10/dist-packages/pyvisa_py/gpib.py", line >> 401, in write >> >> ifc.write(data) >> File "/usr/local/lib/python3.10/dist-packages/Gpib.py", line 53, in >> write >> gpib.write(self.id, str) >> SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats >> 2022-06-26 19:03:45,878 - pyvisa - DEBUG - Closing ResourceManager >> (session: 7325318) >> 2022-06-26 19:03:45,878 - pyvisa - DEBUG - GPIB0::5::INSTR - closing >> 2022-06-26 19:03:45,879 - pyvisa - DEBUG - GPIB0::5::INSTR - is closed >> >> It didn't look like this is mentioned elsewhere on the list, so I thought >> I'd bring it up. >> >> _______________________________________________ >> Linux-gpib-general mailing list >> Lin...@li... >> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general >> > -- https://keybase.io/nelsonov |
