(Python)psycopg2安装 [英] (Python) psycopg2 installation

问题描述

我对Python的使用经验很少，并且陷入了应该是一个非常简单的问题上.我在Mac上使用Jupyter Notebook.

I have a fairly light amount of experience with Python and got stuck on what should be a pretty simple issue. I am using Jupyter Notebook on a Mac.

我想在Python中安装psycopg2，所以我输入

I wanted to install psycopg2 in Python so I typed in

import psycopg2 as pg2

但是，我遇到了以下错误:

But, I got the following error:

ModuleNotFoundError                       Traceback (most recent call 
last)
<ipython-input-1-32fa0c891bdd> in <module>
 ----> 1 import psycopg2 as pg2

ModuleNotFoundError: No module named 'psycopg2'

然后我去航站楼并输入:

I then went over to the terminal and typed in:

pip install psycopg2

这导致了另一个错误:

Error: pg_config executable not found.
pg_config is required to build psycopg2 from source.  Please add the 
directory
containing pg_config to the $PATH or specify the full executable path 
with the
option:
python setup.py build_ext --pg-config /path/to/pg_config build ...

我不确定如何在错误消息中使用此信息.有人可以帮我指出正确的方向吗?

I'm not sure how to go about using this information in the error message. Can someone help point me in the right direction?

还可以跟进问题:

a.)为什么我不必对pandas或numpy进行配置时，为什么需要在终端中使用pip install modulename?

a.) Why would I need to use pip install modulename in the terminal when I don't have to do that with either pandas or numpy?

任何帮助将不胜感激.

推荐答案

请尝试安装psycopg2-binary，因为您可能没有在计算机上安装所有C库依赖项. pip install psycopg2-binary

Please try installing psycopg2-binary as you probaly do not have all the C library dependencies installed on your computer. pip install psycopg2-binary

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