conn= cx_Oracle.connect('commen-db','123456','127.0.0.1/commen-db', encoding='utf-8')ifconn:print('orecle connect success') 5 连接postgresql importpsycopg2 conn= psycopg2.connect(database='commen-db', host='10.0.0.10', user='postgres', password='123456', port=5432)ifconn:print('pos...
conn=cx_Oracle.connect(conn_str)#conn = cx_Oracle.connect('scott/tiger1@192.168.0.18/orcl')printtime.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())),": connect to %s Succeed"%(database)returnconnexcept:printtime.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())...
Connecting Python applications to aMySQLdatabase enables us to interact withrelational databasesseamlessly. Python offers several libraries to establish this connection, including MySQLdb, PyMySQL, and MySQL Connector. In this tutorial,we’ll learn how to connect to a SQL database in Python. We’ll...
Free tools and libraries for connecting to Oracle Database 虽然oracle官网有如下介绍: 版本21客户端库可以连接到Oracle数据库12.1或更高版本。版本19、18和12.2的客户端库可以连接到Oracle数据库11.2或更高版本。12.1版本的客户端库可以连接到Oracle数据库10.2或更高版本。版本11.2客户端库可以连接到Oracle数据库9.2...
conn=psycopg2.connect(host='localhost',user='postgres',password='password',dbname='database')ifconn.ping():print("Database connection established.")else:print("Failed to connect to database.") 1. 2. 3. 4. 5. 6. 7. 8. 9.
# 导出为CSV文件data.to_csv('data.csv',index=False) 1. 2. 这里的data.csv是导出的CSV文件的路径。index=False表示不导出索引列。 完整示例 下面是一个完整的示例,演示了如何读取数据库并导出为CSV文件: importsqlite3importpandasaspd# 连接到数据库文件conn=sqlite3.connect('database.db')# 执行查询data...
4 = when a query is executed, 7 = always, and all other bit combinations of these values) The creator function or the connect function of the DB-API 2 compliant database module specified as the creator will receive any additional parameters such as the host, database, user, password etc...
con=pymysql.connect(host="",user="",password="",port="",database="",charset="utf8") #charset指定正确的字符集编码 #通过数据库连接对象的cursor方法来构造游标对象,通过游标对象的execute方法或executemany方法来执行sql语句 cur=con.cursor() #cursor.execute(query,args=none),query表示查询的sql语句,党...
connection = MySQLdb.connect( host=os.getenv("HOST"), user=os.getenv("USERNAME"), passwd=os.getenv("PASSWORD"), db=os.getenv("DATABASE"), ssl_mode="VERIFY_IDENTITY", ssl={ 'ca': os.getenv("SSL_CERT") } ) # Create cursor and use ...
defget_db():if'db'noting:g.db=connect_to_database()returng.db @app.teardown_appcontext defteardown_db():db=g.pop('db',None)ifdb is not None:db.close() 0x02 request request封装了客户端的HTTP请求,它也是一个线程本地变量。