[Jython-users] RE: [JPython] problem with sort()

[Adam B. <ada...@gb...>]

The JPython mailing list is technically retired now, I've copied
jython-users.

sort() changes the state of the list so that it's sorted.

>>> x = [ 'e', 'a', 'y', 'k', 'l' ]
>>> print x
['e', 'a', 'y', 'k', 'l']
>>> x.sort()
>>> print x
['a', 'e', 'k', 'l', 'y']

If you want to keep the unsorted data you need to take a copy, ie, y = x.

Adam Burke
www.gbst.com

> -----Original Message-----
> From:	Steve Yegge [SMTP:st...@ca...]
> Sent:	Friday, February 23, 2001 3:19 PM
> To:	jpy...@py...
> Subject:	[JPython] problem with sort()
> 
> rI've got a dictionary whose keys I want to print in sorted order.
> If I call mydict.keys().sort(), the result is None:
> 
>   keys = self.spells.keys()
>   print "keys: ", keys
>   sorted = keys.sort()
>   print sorted
> 
> results in:
> 
> keys:  ['curse spell', 'lightning bolt spell', ...]
> None
> 
> Do I have to make a copy of the keys list in order to sort it?
> The python docs seem to suggest I can just slap a call to sort()
> on the key set to iterate over it in sorted order.
> 
> -steve
> 
> 
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