[Tutor] initializing multiple attributes to same value

[dman]

On Thu, Dec 20, 2001 at 12:14:53AM -0600, Rob McGee wrote:
| I tripped myself up on something like this:
| 
| {code}
| class Whatever:
|   def __init__(self):
|     self.one = self.two = self.three = 0

This works as intended because integers are immutable.

|     self.listOne = self.listTwo = []

If you then try 
    self.listOne.append( "foo" )
you'll see that both names refer to the same object, and you just
changed that object.

|   def __init__(self):
|     list1 = self.one, self.two, self.three
|     for item in list1:
|       item = 0
|     list2 = self.listOne, self.listTwo
|     for item in list2:
|       item = []

This won't work because you are assigning to the name 'item', not
'self.listOne'.  Also, 'self.listOne' must exist before you can put it
in a tuple.

-D

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impossible to accomplish complex actions."
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