try:
	import oursql as mysqldb
except ImportError:
	import MySQLdb as mysqldb

class MYSQL_RED:
	
	#Save mysqldb-connection as class attribute to use only one in descendant classes
	connection = False
	
	def __init__( self, db_hostname, db_username, db_password, db_name ):
		"""
		Opens a connection to MySQL-DB
		
		@returns 	mysql-stream	MySQL Connection
		"""
		
		# Connect to mysqldb only once
		if( type( self ).connection == False ):
			
			type( self ).connection = mysqldb.connect( host=db_hostname, user=db_username, passwd=db_password, db=db_name )
		
	def __del__( self ):
		"""
		Before deleting class, close connection to MySQL-DB
		"""
		
		type( self ).connection.close()