数据库名称关键错误

数据库名称关键错误

我正在尝试在 Ubuntu Bash 命令上运行重复数据删除库和此示例。

https://github.com/dedupeio/dedupe-examples/tree/master/pgsql_big_dedupe_example

基本上,我创建了一个名为 campfin 的数据库,当我列出数据库名称时您可以看到,它确实存在。

postgres=# \l
                               List of databases
   Name    |    Owner    | Encoding | Collate |  Ctype  |   Access privileges
-----------+-------------+----------+---------+---------+-----------------------
 campfin   | simon       | UTF8     | C.UTF-8 | C.UTF-8 |
 dbname    | owning_user | UTF8     | C.UTF-8 | C.UTF-8 |
 postgres  | postgres    | UTF8     | C.UTF-8 | C.UTF-8 |
 template0 | postgres    | UTF8     | C.UTF-8 | C.UTF-8 | =c/postgres          +
           |             |          |         |         | postgres=CTc/postgres
 template1 | postgres    | UTF8     | C.UTF-8 | C.UTF-8 | =c/postgres          +
           |             |          |         |         | postgres=CTc/postgres
(5 rows)

postgres=# \c campfin
You are now connected to database "campfin" as user "postgres".
campfin=# sudo netstat -plunt |grep postmaster
campfin-#  \conninfo
You are connected to database "campfin" as user "postgres" via socket in "/var/run/postgresql" at port "5433".
campfin-#

当我运行我的python代码时:

python3 pgsql_big_dedupe_example_init_db.py

或者

sudo python3 pgsql_big_dedupe_example_init_db.py

这是连接数据库的模式的一部分。

conn = psycopg2.connect(database=db_conf['campfin'],
                        user=db_conf['111'],
                        password=db_conf['111'],
                        host=db_conf['localhost'],
                        port=db_conf['5433'])

返回的信息是数据库 campfin 不存在:

Traceback (most recent call last):
  File "pgsql_big_dedupe_example_init_db.py", line 75, in <module>
    conn = psycopg2.connect(database=db_conf['campfin'],
KeyError: 'campfin'

我在这里做错了什么?问题是否与“/var/run/postgresql”中的“通过套接字”有关?这不是我的本地主机?

当我跑步时:

/mnt/c/WINDOWS/system32/virtualenv/dedupe/dedupe-examples/pgsql_big_dedupe_example$ service postgresql status

返回:10/main(端口 5433):在线

答案1

db_conf['NAME']并不意味着要改变db_conf['campfin']钥匙NAME价值将会是campfin

在命令行中运行

export DATABASE_URL=postgres://111:111@localhost/campfin

然后python3 pgsql_big_dedupe_example_init_db.py用原始代码运行......

con = psycopg2.connect(database=db_conf['NAME'],
                   user=db_conf['USER'],
                   password=db_conf['PASSWORD'],
                   host=db_conf['HOST'],
                   cursor_factory=psycopg2.extras.RealDictCursor)

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