Python cannot connect to MySQL if declare in a class -

i'm newbie in python. i'm trying use python connect mysql server. wrote guides mysql official page, ok. but, when create connector class, raised error "mysql connection not available"

here class

import mysql.connector mysql.connector import errorcode  ##  begin mysql connector class class mysqlconnector :     configs = {         "user":"root",         "password":"",         "host":"127.0.0.1",         "database":"python_db",         "raise_on_warnings": true     }     cursor = none     connection = none      ##  begin constructor     def __init__(self, configs = {}) :         if(any(configs)!=false) :             self.configs = configs     ##  end constructor      ##  begin open     def open(self) :         try:             self.connection = mysql.connector.connect(self.configs)         except mysql.connector.error err:             if err.errno == errorcode.er_access_denied_error:                 print("something wrong user name or password")             elif err.errno == errorcode.er_bad_db_error:                 print("database not exists")             else:                 print(err)         finally:             self.connection.close()         return self.connection     ##  end open      ##  begin close connection     def close(self) :         self.cursor.close()         self.connection.close()     ##  end close connection      ##  begin execute     def execute(self, query) :         if(self.connection == none) :             print("connection none")             return         self.cursor = self.connection.cursor()         if(self.cursor!=none) :             self.cursor.execute(query)         else:             print("cursor 'none'")     ##  end execute    ##  end mysql connector class  ##  begin run objconnect = mysqlconnector() objconnect.open() objconnect.execute("select * user") 

please show me way solution , explained me why code has error.

thanks!

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edited

finally, mata , alecxe me solve problem, don't know solution choosen. summary here has mistake me: 1. remove statement. 2. using ** in self.connection = mysql.connector.connect(**self.configs)

even if correct error alecxe pointed out, code still won't work.

the finally block ensures each connection closed before returned, no matter wheather there exception or not, open method returns closed connections.