import MySQLdb

from MySQLdb.connections import Connection

class LibraryOperation:
	def build_query(self):
		return ''
		
	def print_error(self, cur):
		rows = cur.fetchall()
		for row in rows:
			if 'error_description' in row:
				print (row['error_description'])

	def execute(self, db : Connection):
		cur = db.cursor()
		
		query = self.build_query()
		print(query)
		cur.execute(query)
		self.print_error(cur)