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我尝试像往常一样导入brightway2并且它工作但现在它不再工作并得到一个：
ImportError：无法导入名称'数据库'
我没有更改任何内容，我试图删除conda并再次安装但同样的错误.. 。有任何想法吗？

import brightway2 as bw
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-a3ddbb8a34e8> in <module>
----> 1 import brightway2 as bw

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\brightway2\__init__.py in <module>
      1 # -*- coding: utf-8 -*
----> 2 from bw2data import *
      3 from bw2calc import *
      4 from bw2io import *
      5 

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\__init__.py in <module>
     33 from .project import projects
     34 from .utils import set_data_dir
---> 35 from .meta import (
     36     dynamic_calculation_setups,
     37     calculation_setups,

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\meta.py in <module>
    190 preferences = Preferences()
    191 weightings = WeightingMeta()
--> 192 calculation_setups = CalculationSetups()
    193 dynamic_calculation_setups = DynamicCalculationSetups()

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\serialization.py in __init__(self, dirpath)
    120             self.filename
    121         )
--> 122         self.load()
    123 
    124     def load(self):

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\serialization.py in load(self)
    125         """Load the serialized data. Creates the file if not yet present."""
    126         try:
--> 127             self.data = self.deserialize()
    128         except IOError:
    129             # Create if not present

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\serialization.py in deserialize(self)
    238 
    239     def deserialize(self):
--> 240         return self.unpack(pickle.load(open(self.filepath, "rb")))
    241 
    242 

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\backends\__init__.py in <module>
      3 from eight import *
      4 
----> 5 from .base import LCIBackend
      6 from .peewee import SQLiteBackend
      7 from .json import JSONDatabase

还有什么东西不见了？

D:\Users\gressetbourgeoismat\Documents\Portable\miniconda\envs\bw6\lib\site-packages\bw2data\backends\base.py in <module>
      3 from eight import *
      4 
----> 5 from .. import (
      6     config,
      7     databases,

ImportError: cannot import name 'databases'
4

1 回答 1

0

这是一个错误，将在即将发布的版本中修复。暂时需要删除文件：

C:\Documents and Settings\<User>\Application Data\Local Settings\pylca\Brightway3\<default-something>\setups.pickle
于 2020-03-05T11:19:53.387 回答