CODEWITHSUNDEEP
python
Demetris
Demetris

Reputation: 3241

Do all the lists of a non referenced list of lists get deleted by garbage collector?

I have:

a=[[1,2,3],[2,3,4],[3,4,5]]

I want to reuse a and empty it. Is it correct to do a=list() or I need to go manually into each list and empty it?

Upvotes: 2

Views: 43

Answers (1)

Jason S
Jason S

Reputation: 13789

a = list() or a = [] will create a new list object. If you actually want to empty the list, a[:] = [] or del a[:] will do that. If you print id(a) before and after each operation you'll see the difference.

There's no need to empty out the sublists. If there are no references remaining they'll be garbage collected.

Upvotes: 3

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