import	bsddb

db	=	bsddb.btopen(None)
for	i	in	range(10):
	db[str(i)]	=	str(i+1)

print	db.keys()

for	j	in	range(10):
	print	db.keys()
	for	i	in	db:
		print	i
	i	=	db.first()[0]
	print	i, db[i]
	del	db[i]