brendan-w
Upgrade dependency 'pint' from pint==0.20.* to pint==0.24.4 (Fedora 41, Python 3.13.1, python-obd 0.7.2)
Installed python-ODB 0.7.2 from pip in Fedora 41 and got this error with pint 0.20.1:
Python 3.13.1 (main, Dec 9 2024, 00:00:00) [GCC 14.2.1 20240912 (Red Hat 14.2.1-3)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import obd
Traceback (most recent call last):
File "<python-input-0>", line 1, in <module>
import obd
File "/home/dosn3rd/.local/lib/python3.13/site-packages/obd/__init__.py", line 41, in <module>
from .obd import OBD
File "/home/dosn3rd/.local/lib/python3.13/site-packages/obd/obd.py", line 38, in <module>
from .commands import commands
File "/home/dosn3rd/.local/lib/python3.13/site-packages/obd/commands.py", line 36, in <module>
from .decoders import *
File "/home/dosn3rd/.local/lib/python3.13/site-packages/obd/decoders.py", line 38, in <module>
from .UnitsAndScaling import Unit, UAS_IDS
File "/home/dosn3rd/.local/lib/python3.13/site-packages/obd/UnitsAndScaling.py", line 38, in <module>
Unit = pint.UnitRegistry()
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/facets/plain/registry.py", line 135, in __call__
obj = super().__call__(*args, **kwargs)
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/registry.py", line 92, in __init__
super().__init__(
~~~~~~~~~~~~~~~~^
filename=filename,
^^^^^^^^^^^^^^^^^^
...<11 lines>...
cache_folder=cache_folder,
^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/facets/system/registry.py", line 52, in __init__
super().__init__(**kwargs)
~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/facets/group/registry.py", line 40, in __init__
super().__init__(**kwargs)
~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/facets/context/registry.py", line 65, in __init__
super().__init__(**kwargs)
~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/facets/nonmultiplicative/registry.py", line 46, in __init__
super().__init__(**kwargs)
~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/facets/plain/registry.py", line 217, in __init__
from ... import delegates # TODO: change thiss
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/delegates/__init__.py", line 11, in <module>
from . import txt_defparser
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/delegates/txt_defparser/__init__.py", line 12, in <module>
from .defparser import DefParser
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/delegates/txt_defparser/defparser.py", line 9, in <module>
from . import block, common, context, defaults, group, plain, system
File "/home/dosn3rd/.local/lib/python3.13/site-packages/pint/delegates/txt_defparser/common.py", line 21, in <module>
@dataclass(frozen=True)
~~~~~~~~~^^^^^^^^^^^^^
File "/usr/lib64/python3.13/dataclasses.py", line 1295, in wrap
return _process_class(cls, init, repr, eq, order, unsafe_hash,
frozen, match_args, kw_only, slots,
weakref_slot)
File "/usr/lib64/python3.13/dataclasses.py", line 1043, in _process_class
raise TypeError('cannot inherit frozen dataclass from a '
'non-frozen one')
TypeError: cannot inherit frozen dataclass from a non-frozen one
>>>
Seems to be related to a few errors in the dependency "pint" that may even have come from issues within cpython itself? https://github.com/hgrecco/pint/issues?q=is%3Aissue+pint%2Fdelegates%2Ftxt_defparser%2Fcommon.py
Fix/Workaround: @hgrecco seems to have fixed this or similar issues in pint==0.24.4, and as a workaround i installed that version even if pip complains about unsatisfied dependencies. https://github.com/hgrecco/pint/issues/2074#issuecomment-2462693795
With pint upgraded to 0.24.4 the issue is no longer present, at least for me.
Python 3.13.1 (main, Dec 9 2024, 00:00:00) [GCC 14.2.1 20240912 (Red Hat 14.2.1-3)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import obd
>>>
I have not tested this with obdsim but I tried the workaround by connecting to a car, and I can successfully see that i have no DTCs and reading Mode 1 "Live Data" seems to work as intended with pint upgraded to version 0.24.4.
``I am getting this same issue
python -m venv venv source venv/bin/activate pip install obd pandas
fixed first this
AttributeError: module 'numpy' has no attribute 'cumproduct'. Did you mean: 'cumprod'?
by changing for func_str in ["cumprod","cumproduct", "nancumprod"]:
for func_str in ["cumprod", "nancumprod"]: on line 884
but now i am getting
File "/usr/lib/python3.13/dataclasses.py", line 1295, in wrap return _process_class(cls, init, repr, eq, order, unsafe_hash, frozen, match_args, kw_only, slots, weakref_slot) File "/usr/lib/python3.13/dataclasses.py", line 1043, in _process_class raise TypeError('cannot inherit frozen dataclass from a ' 'non-frozen one') TypeError: cannot inherit frozen dataclass from a non-frozen one
so how to fix this
