问题描述
pip 说 minizinc 已经安装，但是当我尝试在代码中调用它时，它给我错误说它没有安装。
(backend) bash-3.2$ python
Python 3.8.3 (default,Jul 2 2020,11:26:31)
[Clang 10.0.0 ] :: Anaconda,Inc. on darwin
Type "help","copyright","credits" or "license" for more information.
>>> from minizinc import Instance,Model,Solver
/Users/miranda/.local/share/virtualenvs/backend-BjqhdW2P/lib/python3.8/site-packages/minizinc/__init__.py:25: RuntimeWarning: MiniZinc was not found on the system. No default driver could be initialised.
warnings.warn(
Traceback (most recent call last):
File "<stdin>",line 1,in <module>
ImportError: cannot import name 'Instance' from 'minizinc' (/Users/miranda/.local/share/virtualenvs/backend-BjqhdW2P/lib/python3.8/site-packages/minizinc/__init__.py)
>>> exit()
(backend) bash-3.2$ pip install minizinc
Requirement already satisfied: minizinc in /Users/miranda/.local/share/virtualenvs/backend-BjqhdW2P/lib/python3.8/site-packages (0.4.2)
(backend) bash-3.2$ python3 -m pip install minizinc
Requirement already satisfied: minizinc in /Users/miranda/.local/share/virtualenvs/backend-BjqhdW2P/lib/python3.8/site-packages (0.4.2)
(backend) bash-3.2$ python -m pip install minizinc
Requirement already satisfied: minizinc in /Users/miranda/.local/share/virtualenvs/backend-BjqhdW2P/lib/python3.8/site-packages (0.4.2)
解决方法
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