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Home/ Questions/Q 6905733
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Editorial Team
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Editorial Team
Asked: May 27, 20262026-05-27T08:13:13+00:00 2026-05-27T08:13:13+00:00

Conceptually, I want to do: arr[20:] = 0 where arr is a list .

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Conceptually, I want to do:

arr[20:] = 0

where arr is a list.
How can I do this?

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  1. Editorial Team
    Editorial Team
    2026-05-27T08:13:14+00:00Added an answer on May 27, 2026 at 8:13 am

    You can do it directly using slice assignment.

    arr[20:] = [0] * (len(arr) - 20)
    

    But the natural way is just to iterate.

    for i in xrange(20, len(arr)):
        arr[i] = 0
    
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