Python实现连接postgresql数据库的方法分析

sudo apt-get install python3-psycopg2

import psycopg2
# 数据库连接参数
conn = psycopg2.connect(database="test1", user="jm", password="123", host="127.0.0.1", port="5432")
cur = conn.cursor()
cur.execute("SELECT * FROM a1;")
rows = cur.fetchall()    # all rows in table
print(rows)
 conn.commit()
 cur.close()
 conn.close()

[(2, 'jack', 'girl'), (1, 'max', 'boy '), (3, 'kate', 'girl')]

sudo apt-get install python3-postgresql

import postgresql
 #('pq://用户名:密码@localhost:5432/数据库名')
db = postgresql.open('pq://jm:123@localhost:5432/test1')
ps=db.prepare("select * from a1")
print(ps())
ps.close()
db.close()