python - 无法在 jupyter 笔记本中导入 psycopg2，但可以在 python3 控制台中导入

Question

我可以在 python 控制台中导入 pyscopg2，但不能在 jupyter 笔记本中导入。

我通过 anaconda-navigator 安装了 psycopg2。

Jupyter 笔记本:

import psycopg2

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-3-7d2da0a5d979> in <module>
----> 1 import psycopg2

ModuleNotFoundError: No module named 'psycopg2'

import sys
sys.path

['/Users/me/Anaconda/MLJSONs', '/usr/local/anaconda3/lib/python37.zip', '/usr/local/anaconda3/lib/python3.7', '/usr/local/anaconda3/lib/python3.7/lib-dynload', '', '/usr/local/anaconda3/lib/python3.7/site-packages', '/usr/local/anaconda3/lib/python3.7/site-packages/aeosa', '/usr/local/anaconda3/lib/python3.7/site-packages/IPython/extensions', '/Users/me/.ipython']

Python 控制台:

python3

>>> import psycopg2

这里没问题。

>>> import sys
>>> sys.path

['', '/usr/local/anaconda3/envs/env3/lib/python37.zip', '/usr/local/anaconda3/envs/env3/lib/python3.7', '/usr/local/anaconda3/envs/env3/lib/python3.7/lib-dynload', '/usr/local/anaconda3/envs/env3/lib/python3.7/site-packages']

Conda 列表:

# packages in environment at /usr/local/anaconda3/envs/env3:
#
# Name                    Version                   Build  
...
psycopg2                  2.7.6.1          py37ha12b0ac_0  
python                    3.7.3                h359304d_0  
...

我尝试过:

将其添加到sys.path，但出现了相同的结果。

sys.path.insert(0,'/usr/local/anaconda3/envs/env3/lib')

Answer 1

解决方案是在我的虚拟 conda 环境之外使用 pip 安装。

pip install psycopg2