ValueError trying to run installation example

[juno53211]

After running pip install balloon_learning_environment (in a clean virtual environment made using venv), I tried to run the example:

% python -m balloon_learning_environment.eval.eval \
  --agent=station_seeker \
  --renderer=matplotlib \
  --suite=micro_eval \
  --output_dir=/tmp/ble/eval

and got the following error:

raise ValueError(f'mutable default {type(f.default)} for field '
ValueError: mutable default <class 'balloon_learning_environment.utils.units.Power'> for field nighttime_power_load is not allowed: use default_factory

System Configuration: MacBook Air (M1, 2020) Apple M1 Chip 16 GB Memory OSX version 12.7.4

Can someone please advise me on how to fix this? Thank you

Here is the full dump:

% python -m balloon_learning_environment.eval.eval \
  --agent=station_seeker \
  --renderer=matplotlib \
  --suite=micro_eval \
  --output_dir=/tmp/ble/eval
/~/lib/python3.12/site-packages/gym/envs/registration.py:440: UserWarning: WARN: The `registry.env_specs` property along with `EnvSpecTree` is deprecated. Please use `registry` directly as a dictionary instead.
  logger.warn(
/~/lib/python3.12/site-packages/balloon_learning_environment/env/balloon/acs.py:24: DeprecationWarning: Please import `interp1d` from the `scipy.interpolate` namespace; the `scipy.interpolate.interpolate` namespace is deprecated and will be removed in SciPy 2.0.0.
  _PRESSURE_RATIO_TO_POWER: interpolate.interpolate.interp1d = (
/~/lib/python3.12/site-packages/balloon_learning_environment/env/balloon/acs.py:32: DeprecationWarning: `interp2d` is deprecated in SciPy 1.10 and will be removed in SciPy 1.14.0.

For legacy code, nearly bug-for-bug compatible replacements are
`RectBivariateSpline` on regular grids, and `bisplrep`/`bisplev` for
scattered 2D data.

In new code, for regular grids use `RegularGridInterpolator` instead.
For scattered data, prefer `LinearNDInterpolator` or
`CloughTocher2DInterpolator`.

For more details see
`https://scipy.github.io/devdocs/notebooks/interp_transition_guide.html`

  interpolate.interp2d(
/~/lib/python3.12/site-packages/balloon_learning_environment/env/balloon/acs.py:31: DeprecationWarning: Please import `interp2d` from the `scipy.interpolate` namespace; the `scipy.interpolate.interpolate` namespace is deprecated and will be removed in SciPy 2.0.0.
  _PRESSURE_RATIO_POWER_TO_EFFICIENCY: interpolate.interpolate.interp2d = (
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/~/lib/python3.12/site-packages/balloon_learning_environment/eval/eval.py", line 26, in <module>
    from balloon_learning_environment.env import balloon_env  # pylint: disable=unused-import
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/~/lib/python3.12/site-packages/balloon_learning_environment/env/balloon_env.py", line 25, in <module>
    from balloon_learning_environment.env import balloon_arena
  File "/~/lib/python3.12/site-packages/balloon_learning_environment/env/balloon_arena.py", line 27, in <module>
    from balloon_learning_environment.env import features
  File "/~/lib/python3.12/site-packages/balloon_learning_environment/env/features.py", line 37, in <module>
    from balloon_learning_environment.env import simulator_data
  File "/~/lib/python3.12/site-packages/balloon_learning_environment/env/simulator_data.py", line 21, in <module>
    from balloon_learning_environment.env.balloon import balloon
  File "/~/lib/python3.12/site-packages/balloon_learning_environment/env/balloon/balloon.py", line 72, in <module>
    @dataclasses.dataclass
     ^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/dataclasses.py", line 1268, in dataclass
    return wrap(cls)
           ^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/dataclasses.py", line 1258, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/dataclasses.py", line 994, in _process_class
    cls_fields.append(_get_field(cls, name, type, kw_only))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/dataclasses.py", line 852, in _get_field
    raise ValueError(f'mutable default {type(f.default)} for field '
ValueError: mutable default <class 'balloon_learning_environment.utils.units.Power'> for field nighttime_power_load is not allowed: use default_factory