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class Node(object):
def __init__(self, data, next):
self.data = data
self.next = next
class Chain(object):
def __init__(self):
self.root = None
self.length = 0
def printself(self):
if self.root == None:
return
else:
cursor = self.root
counter = 0
while cursor != None:
print("index: {}, value: {}".format(counter, cursor.data))
cursor =cursor.next
counter += 1
print("self-print end.")