def __init__(self, start=[]): # extend the 'new' operation
Stack.__init__(self) # initialize stack from any sequence
for str in start: # start can be another stack too
self.push(str)
def __getitem__(self, i): # extend 'item' to trace accesses
print 'accessing cell', i
return Stack.__getitem__(self, i)
def __getitem__(self, i): # extend 'item' to trace accesses
print 'accessing cell', i
return Stack.__getitem__(self, i)
def __init__(self, start=[]): # extend the 'new' operation
Stack.__init__(self) # initialize stack from any sequence
for str in start: # start can be another stack too
self.push(str)