1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
from string import ascii_letters
from random import choice
from rdflib.Identifier import Identifier
from rdflib.Literal import Literal
# Create a (hopefully) unique prefix so that BNode values do not
# collide with ones created with a different instance of this module.
prefix = ""
for i in xrange(0,8):
prefix += choice(ascii_letters)
node_id = 0
class BNode(Identifier):
def __new__(cls, value=None):
if value==None:
global node_id
node_id += 1
value = "_:%s%s" % (prefix, node_id)
return Identifier.__new__(cls, value)
def n3(self):
return str(self)
|
