TypeError when importing atoti with Python 3.8.10 and 3.9.5

[adamxyzxyz]

When I run import atoti, I get the following error:

TypeError: cannot inherit frozen dataclass from a non-frozen one

[tibdex]

Hi, so that we can help you, please share:

• your version of Python
• which OS you are using
• the version of atoti you tried to install
• the traceback of the TypeError you're getting

[adamxyzxyz]

Hello,

• Python 3.9 (64 bit)
• Windows 10

traceback

TypeError                                 Traceback (most recent call last)
 in 
----> 1 import atoti
~\desktop\mechenv\lib\site-packages\atoti_init_.py in 

5     _compatibility,  # pylint: disable=redefined-builtin; Import first to fail fast

6 )

----> 7 from . import (

8     _functions,

9     agg,
~\desktop\mechenv\lib\site-packages\atoti_functions_init_.py in 

1 # pylint: disable=redefined-builtin

2

----> 3 from .date import date_diff

4 from .measure import filter, rank, value, where

5 from .multidimensional import _first, _last, at, date_shift, parent_value, shift, total
~\desktop\mechenv\lib\site-packages\atoti_functions\date.py in 

6 from typing_extensions import Literal

7

----> 8 from .._measures.calculated_measure import CalculatedMeasure, Operator

9 from ..measure import Measure, MeasureConvertible, _convert_to_measure

10
~\desktop\mechenv\lib\site-packages\atoti_measures\calculated_measure.py in 

5

6 from ..measure import Measure

----> 7 from ..scope._utils import LeafLevels

8 from .utils import convert_measure_args

9
~\desktop\mechenv\lib\site-packages\atoti\scope_init_.py in 

1 from typing import Optional, Tuple, Union

2

----> 3 from atoti.hierarchy import Hierarchy

4 from atoti.level import Level

5
~\desktop\mechenv\lib\site-packages\atoti\hierarchy.py in 

5 from typing import TYPE_CHECKING, Any, Callable, Mapping

6

----> 7 from ._base._base_hierarchy import BaseHierarchy

8 from .level import Level

9
~\desktop\mechenv\lib\site-packages\atoti_base_base_hierarchy.py in 

5 from .._bitwise_operators_only import BitwiseOperatorsOnly, IdentityElement

6 from .._docs_utils import HIERARCHY_ISIN_DOC, doc

----> 7 from .._hierarchy_isin_conditions import (

8     HierarchyIsInCondition,

9     create_condition_from_member_paths,
~\desktop\mechenv\lib\site-packages\atoti_hierarchy_isin_conditions.py in 

14

15 @dataclass(frozen=True)

---> 16 class HierarchyIsInCondition(Condition, MeasureConvertible):

17     """Class for isin condition on cube hierarchies."""

18
C:\Program Files\Python39\lib\dataclasses.py in wrap(cls)

1011

1012     def wrap(cls):

-> 1013         return _process_class(cls, init, repr, eq, order, unsafe_hash, frozen)

1014

1015     # See if we're being called as @dataclass or @dataclass().
C:\Program Files\Python39\lib\dataclasses.py in _process_class(cls, init, repr, eq, order, unsafe_hash, frozen)

896         # Raise an exception if we're frozen, but none of our bases are.

897         if not any_frozen_base and frozen:

--> 898             raise TypeError('cannot inherit frozen dataclass from a '

899                             'non-frozen one')

900
TypeError: cannot inherit frozen dataclass from a non-frozen one

[tibdex]

I have the same issue with Python 3.8.10 that was released the 2021-05-03 (same day as atoti 0.5.4). This is new CPython code leading to an error being raised.

While we look for a solution, you can try with Python < 3.8.10.

[adamxyzxyz]

So use an older version of python for now for it to work?

[tibdex]

atoti 0.5.5 has just been released to fix this issue. You can try again with Python 3.8.10.