写出python连接数据库的文件

Python连接数据库的文件示例如下：import mysql.connectormydb = mysql.connector.connect( host="localhost", user="yourusername", passwd="yourpassword", database="mydatabase" )mycursor = mydb.cursor()mycursor.execute("SELECT * FROM customers")myresult = mycursor.fetchall()for x in myresult: print(x)