old_contents: import mysql.connector
  import Constants
  
  class Connection:
      """
      Class to help simplify the execution of SQL queries using MySQL Connector
      """
      def __init__(self, db_name):
          """
          Sets up the MySQL connection and cursor variable
          """
          self.conn = mysql.connector.connect(user='root', password='test', database=db_name)
          self.cursor = self.conn.cursor(buffered=True)
  
      def execute(self, *args):
          """
          Executes a query and returns all resulting rows if available
          """
          self.cursor.execute(*args)
          retval = None
          if self.cursor.rowcount > 0:
              try:
                  retval = self.cursor.fetchall()
              except:
                  retval = None
          self.conn.commit()
          return retval
  
      def destroy(self):
          """
          Destroys the internal variables of this class
          """
          self.conn.close()
          del self.cursor
          del self.conn
  
  def execute(*args):
      """
      Executes a single SQL command
      """
      c = Connection(Constants.PROJECT_DB_NAME)
      retval = c.execute(*args)
      c.destroy()
      return retval
  
  
new_contents: import mysql.connector
  import Constants
  
  class Connection:
      """
      Class to help simplify the execution of SQL queries using MySQL Connector
      """
      def __init__(self, db_name):
          """
          Sets up the MySQL connection and cursor variable
          """
          self.conn = mysql.connector.connect(user='root', password='test', database=db_name)
          self.cursor = self.conn.cursor(buffered=True)
  
      def execute(self, *args):
          """
          Executes a query and returns all resulting rows if available
          """
          self.cursor.execute(*args)
          retval = None
          if self.cursor.rowcount > 0:
              try:
                  retval = self.cursor.fetchall()
              except:
                  retval = None
          self.conn.commit()
          return retval
  
      def __del__(self):
          """
          Destroys the internal variables of this class
          """
          self.conn.close()
          del self.cursor
          del self.conn
  
  def execute(*args):
      """
      Executes a single SQL command
      """
      c = Connection(Constants.PROJECT_DB_NAME)
      retval = c.execute(*args)
      return retval
  
  
subject: Make a native Python destructor in SQLConnector class