[Tutor] how to *really* copy a list
kp8 at mac.com
Sun Apr 30 00:55:08 CEST 2006
Thanks. Your message was very helpful. I will tattoo it to my forehead.
hehe... i notice that the "learning python" book also explains so of
and i shall study that as well....
On Apr 27, 2006, at 10:14 PM, tutor-request at python.org wrote:
> On 28/04/06, kevin parks <kp8 at mac.com> wrote:
>> In most case you are fine operating on the list in place and altering
>> existing list. In some cases you want your code to stop molesting
>> your poor
>> mutables and really honestly sincerly copy the dang thing. In this
>> case i am
>> making a function that does odd smmetry mirroring. But i want my
>> orginal list
>> to remain intact....
>> def mirror(seq):
>> """odd symmetry mirroring [1, 2, 3, 4] --> [1, 2, 3, 4, 3,
>> 2, 1]"""
>> foo=seq[:-1] # copy list,
>> excluding last element for odd symetry
>> foo.reverse() # flip it
>> return seq
> Hi Kevin,
> Your problem is this line:
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