Attribute Error for "from brightway2 import *"

Question

when I try to import brightway2 into jupyter-lab I get attribute error and I have tried several ways but the problem continues. So I need help. to open jupyter-lab I follow this steps - from the anaconda -> environment -> brightway -> open with terminal. then, I open the jupyter-lab with the terminal. then, I am trying to import brightway to the jupyter-lab by the command from brightway2 import * gives me the following attribute error below. Also when I try to do this directly through the terminal from anaconda I get the same error. I also tried different versions of numpy but didn't work. My brightway and everything else is updated. **My computer: ** MacBook Pro 2017 - 2.3 GHz Dual-Core Intel Core i5 , Intel Iris Plus Graphics 640 1536 MB , 16 GB 2133 MHz LPDDR3 , macOS 13.6.1 (22G313) has anyone else had this problem, how did you solve it, is there a method you recommend? how can I solve this?

The error:

AttributeError                            Traceback (most recent call last)
Cell In[1], line 1
----> 1 from brightway2 import *

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/brightway2/__init__.py:2
      1 # -*- coding: utf-8 -*
----> 2 from bw2data import *
      3 from bw2calc import *
      4 from bw2io import *

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/bw2data/__init__.py:64
     61 config.p = preferences
     63 from .serialization import JsonWrapper
---> 64 from .database import DatabaseChooser as Database, get_activity
     65 from .data_store import DataStore, ProcessedDataStore
     66 from .method import Method

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/bw2data/database.py:6
      3 from eight import *
      5 from . import databases, config
----> 6 from .backends.single_file import SingleFileDatabase
      7 from .backends.json import JSONDatabase
      8 from .backends.peewee import SQLiteBackend

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/bw2data/backends/__init__.py:5
      2 from __future__ import print_function, unicode_literals
      3 from eight import *
----> 5 from .base import LCIBackend
      6 from .peewee import SQLiteBackend
      7 from .json import JSONDatabase

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/bw2data/backends/base.py:12
      3 from eight import *
      5 from .. import (
      6     config,
      7     databases,
   (...)
     10     projects,
     11 )
---> 12 from ..data_store import ProcessedDataStore
     13 from ..errors import UntypedExchange, InvalidExchange, UnknownObject
     14 from ..query import Query

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/bw2data/data_store.py:151
    147         self.validator(data)
    148         return True
--> 151 class ProcessedDataStore(DataStore):
    152     """
    153 Brightway2 data stores that can be processed to NumPy arrays. In addition to ``metadata`` and (optionally) ``validator``, subclasses should define:
    154 
   (...)
    160 
    161     """
    162     dtype_fields = None

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/bw2data/data_store.py:172, in ProcessedDataStore()
    162 dtype_fields = None
    163 # Numpy columns names can't be unicode
    164 base_uncertainty_fields = [
    165     (numpy_string('uncertainty_type'), np.uint8),
    166     (numpy_string('amount'), np.float32),
    167     (numpy_string('loc'), np.float32),
    168     (numpy_string('scale'), np.float32),
    169     (numpy_string('shape'), np.float32),
    170     (numpy_string('minimum'), np.float32),
    171     (numpy_string('maximum'), np.float32),
--> 172     (numpy_string('negative'), np.bool),
    173 ]
    175 @property
    176 def dtype(self):
    177     """Returns both the generic ``base_uncertainty_fields`` plus class-specific ``dtype_fields``. ``dtype`` determines the columns of the :ref:`processed array <processing-data>`."""

File ~/anaconda3/envs/bw/lib/python3.11/site-packages/numpy/__init__.py:324, in __getattr__(attr)
    319     warnings.warn(
    320         f"In the future `np.{attr}` will be defined as the "
    321         "corresponding NumPy scalar.", FutureWarning, stacklevel=2)
    323 if attr in __former_attrs__:
--> 324     raise AttributeError(__former_attrs__[attr])
    326 if attr == 'testing':
    327     import numpy.testing as testing

AttributeError: module 'numpy' has no attribute 'bool'.
`np.bool` was a deprecated alias for the builtin `bool`. To avoid this error in existing code, use `bool` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.bool_` here.
The aliases was originally deprecated in NumPy 1.20; for more details and guidance see the original release note at:
    https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

• Also when I try to do this from anaconda directly through the terminal I get the same error.
• I tried to update everything dumpy, brightway.
• I also created another environment on anaconda for brightway and opened the jupyter-lab again and got the same error for from brightway2 import * command.
• I tried different versions of numpy like 1.19.0 and 1.20.0 but didn't work.

Answer 1

This was fixed in commit 0509092 and released in 3.6.6 on Februray 24, 2023.

On conda you can upgrade using:

conda update bw2data"=3.6.6"

Answer 2

FYI, Chris' solution worked for me, but in my case, I had to do:

conda install -c conda-forge bw2data=3.6.6

Hope this helps