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

[<ma...@la...>]

D-Man <ds...@ri...> said:

> On Fri, Feb 23, 2001 at 12:42:08PM +0000, ma...@la... wrote:
> | Adam Burke <ada...@gb...> said:
> |
> | > If you want to keep the unsorted data you need to take a copy, ie, y = 
x.
> | 
> | Careful:  y = x doesn't make a copy, it just assigns another
> | name for the same list. Use  y = x[:]  to make a copy.
> 
> That is only a shallow copy.  If you modify the objects in list 'y'
> afterwards, list 'x' will see the change.  If you want a deep copy,
> there is a module, "copy" I believe, to handle that.

copy.deepcopy(x), yes.

For the example given, a shallow copy would suffice, but
in the general case, the above observation is pertinent.

Mats