Python Execute() takes exactly 2 arguments (3 given)

I am trying to insert into the SQLite DataBase values with this code:

con.Execute('''UPDATE tblPlayers SET p_Level = ? WHERE p_Username= ? ''', (PlayerLevel,PlayerUsername))

this is the Execute function:

def Execute(self,SQL):
    self.__connection.execute(SQL)
    self.__connection.comit()

and i am getting this error:

con.Execute('''UPDATE tblPlayers SET p_Level = ? WHERE p_Username= ? ''', (PlayerLevel,PlayerUsername)) TypeError: Execute() takes exactly 2 arguments (3 given)