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![Blair Walker](https://secure.gravatar.com/avatar/f6635c3e41122e32808aac94a69697eb?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Blair Walker
12,672 PointsDoesn't the last example at the end of the video show that this actual "inventory" list is empty?
I tried to call back the list, but nothing is in there. And in the video, he calls "inventory" and its empty. Is this how it should be? Where did the list go?
1 Answer
![Travis Alstrand](https://uploads.teamtreehouse.com/production/profile-photos/11658224/micro_travis.jpg)
Travis Alstrand
Data Analysis Techdegree Graduate 49,407 PointsYes, he states at about 8:18 that he's looping over a copy but removing from the actual list. He's doing this because when looping over the actual list and trying to remove them, he hit the issues shown where two items still remained. So by looping over a copy, he's still able to access the same item
variable, but he removes it from the actual list instead.
I hope that makes sense
You can read more on Shallow copies (what was seen here) and deep copies here