Getting psycopg.ProgrammingError: invalid connection option "database" when pasing database parameter

Question

嘿，我是数据库的新手，我决定使用 Postgresql for convinience. And I am using an adapter for the Python programming language of the database named Psycopg 我按照 Psycopg2 的安装教程进行操作，但出现错误，所以我决定安装 psycopg3，并且安装成功！但是当我传递 database 参数时，出现以下错误：

Traceback (most recent call last):
  File "C:\Users\Aditya\AppData\Local\Programs\Python\Python310\lib\site-packages\psycopg\conninfo.py", line 97, in _parse_conninfo
    return pq.Conninfo.parse(conninfo.encode())
  File "psycopg_binary\pq/conninfo.pyx", line 30, in psycopg_binary.pq.Conninfo.parse
psycopg.OperationalError: invalid connection option "database"


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\Users\Aditya\Desktop\Aditya\TGbot\dbhelper.py", line 3, in <module>
    conn = psycopg.connect(
  File "C:\Users\Aditya\AppData\Local\Programs\Python\Python310\lib\site-packages\psycopg\connection.py", line 561, in connect
    conninfo = make_conninfo(**params)
  File "C:\Users\Aditya\AppData\Local\Programs\Python\Python310\lib\site-packages\psycopg\conninfo.py", line 56, in make_conninfo
    _parse_conninfo(conninfo)
  File "C:\Users\Aditya\AppData\Local\Programs\Python\Python310\lib\site-packages\psycopg\conninfo.py", line 99, in _parse_conninfo
    raise e.ProgrammingError(str(ex))
psycopg.ProgrammingError: invalid connection option "database"

但是当我没有传递数据库参数时，我没有收到任何类型的错误...这是我的代码：

import psycopg 

conn = psycopg.connect(
    host="localhost",
    database="suppliers",
    user="postgres",
    password="pas")

我做错了什么？我确定我已经使用该名称创建了数据库并且密码也是正确的。

Answer 1

您看起来正在使用 psycopg3。 database 在 psycopg2 中是一个弃用的参数，在 psycopg3 中是不允许的。您需要根据列表 here as found in page in the psycopg3 page for connect.

使用 dbname

Getting psycopg.ProgrammingError: invalid connection option "database" when pasing database parameter

Getting psycopg.ProgrammingError: invalid connection option "database" when pasing database parameter

database

postgresql

python-3.x

psycopg3