如何在Python中使用psycopg2-binary？

Question

我使用pip install psycopg2-binary安装了psycopg2-binary软件包。但是什么时候可以在Python中使用它？

import psycopg2 as pg2
conn = pg2.connect(database = 'dvdrental', user = 'postgres', password = secret)
cur = conn.cursor()
cur.execure('select * from actor')
cur.fetchmany(5)

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-6-c2276cd20949> in <module>()
----> 1 import psycopg2 as pg2
      2 conn = pg2.connect(database = 'dvdrental', user = 'postgres', password = secret)
      3 cur = conn.cursor()
      4 cur.execure('select * from actor')
      5 cur.fetchmany(5)
ModuleNotFoundError: No module named 'psycopg2'

Answer 1

首先安装依赖项，

sudo apt-get install build-dep python-psycopg2

之后，

pip install psycopg2