我正在嘗試在 Ubuntu Bash 命令上運行重複資料刪除庫和此範例。
https://github.com/dedupeio/dedupe-examples/tree/master/pgsql_big_dedupe_example
基本上,我創建了一個名為 Campfin 的資料庫,正如您在列出資料庫名稱時所看到的那樣,它確實存在。
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-#
當我運行我的 python 程式碼:
python3 pgsql_big_dedupe_example_init_db.py
或者
sudo python3 pgsql_big_dedupe_example_init_db.py
這是連接資料庫模式的一部分。
conn = psycopg2.connect(database=db_conf['campfin'],
user=db_conf['111'],
password=db_conf['111'],
host=db_conf['localhost'],
port=db_conf['5433'])
回傳我資料庫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'
我在這裡做錯了什麼?問題是否與「透過「/var/run/postgresql」中的套接字」有關?
當我跑步時:
/mnt/c/WINDOWS/system32/virtualenv/dedupe/dedupe-examples/pgsql_big_dedupe_example$ service postgresql status
返回:10/main(連接埠5433):在線
答案1
db_conf['NAME']
並不意味著要更改為db_conf['campfin']
.這鑰匙是NAME
個價值的吧campfin
!
在命令列中,運行
export DATABASE_URL=postgres://111:111@localhost/campfin
然後python3 pgsql_big_dedupe_example_init_db.py
用原來的程式碼運行...
con = psycopg2.connect(database=db_conf['NAME'],
user=db_conf['USER'],
password=db_conf['PASSWORD'],
host=db_conf['HOST'],
cursor_factory=psycopg2.extras.RealDictCursor)