I'm faint why this can't work

[JStoneGT at aol.com]

Hello,
 
I got this similar sample script from books:
 
$ cat sampdict.py
#!/usr/bin/python
class  SampDict(dict):
def __init__(self,  filename=None):
self["name"] =  filename 
 
But when I run it I got the errors:
 
>>> from sampdict import SampDict
>>>  SampDict("/etc/passwd")      
Traceback (most recent  call last):
File "<stdin>", line 1, in ?
File  "sampdict.py", line 4, in __init__
self["name"] = filename  
AttributeError: SampDict instance has no attribute '__setitem__'
 
 
I'm using Python 2.3.4.
 
Please help.Thanks.
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