Create a Postgres database using python
As shown in the other answer the connection must be in autocommit mode. Another way of setting it using psycopg2
is through the autocommit
attribute:
import psycopg2
from psycopg2 import sql
con = psycopg2.connect(...)
con.autocommit = True
cur = con.cursor()
# sql.SQL and sql.Identifier are needed to avoid SQL injection attacks.
cur.execute(sql.SQL('CREATE DATABASE {};').format(
sql.Identifier(self.db_name)))
Use ISOLATION_LEVEL_AUTOCOMMIT, a psycopg2 extensions:
No transaction is started when command are issued and no commit() or rollback() is required.
import psycopg2
from psycopg2 import sql
from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT # <-- ADD THIS LINE
con = psycopg2.connect(dbname='postgres',
user=self.user_name, host='',
password=self.password)
con.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT) # <-- ADD THIS LINE
cur = con.cursor()
# Use the psycopg2.sql module instead of string concatenation
# in order to avoid sql injection attacs.
cur.execute(sql.SQL("CREATE DATABASE {}").format(
sql.Identifier(self.db_name))
)