[Tutor] List mimicing

[Kalle Svensson]

Sez Andrew Wilkins:
> Hi folks,
> 
> I'm creating a class somewhat like shelve that stores a list as a file, and
> provides a very list-like interface to it. I'm having troubles with __iadd__
> and __imul__ however.
[snip]

You want to take a look at the class UserList in the module UserList in the
standard library.

> -------- code ----------
> 
> import cPickle,types,os
> 
> class ListShelf:
[snip]
> 	def __iadd__(self,other):
> 		"ie. list+=other"
> 		_list=self._load()
> 		_list+=other
> 		self._dump(_list)

                return self

> 	def __imul__(self,other):
> 		"ie. list*=other"
> 		_list=self._load()
> 		_list*=other
> 		self._dump(_list)

                return self

Peace,
  Kalle
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