I currently have a connection string in the format of:
"localhost://username:password@data_quality:5432"
What is the best method of using this to connect to my database using psycopg2?
eg: connection = psycopg2.connect(connection_string)
Thanks,
2 Answers
You could make use of urlparse, creating a dictionary that matches psycopg's connection arguments:
import psycopg2
from urllib.parse import urlparse
conStr = "localhost://username:password@data_quality:5432"
p = urlparse(conStr)
pg_connection_dict = {
'dbname': p.hostname,
'user': p.username,
'password': p.password,
'port': p.port,
'host': p.scheme
}
print(pg_connection_dict)
con = psycopg2.connect(**pg_connection_dict)
print(con)
Out:
{'dbname': 'data_quality', 'user': 'username', 'password': 'password', 'port': 5432, 'host': 'localhost'}
<connection object at 0x105f58190; dsn: 'user=xxx password=xxx dbname=xxx host=xxx port=xxx', closed: 0>
Documentation for pyscopg2 connect is here. Following their syntax you connect like this:
connection = psycopg2.connect(host='localhost', user='<username>',
password='<password>',
dbname='data_quality', port=5432)
If you are using Windows, it can be stupid about resolving localhost if you don't have a network connection. You can get around this by instead using '127.0.0.1' for host
