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Engineering LibreTexts

1.4: List Operations

  • Page ID
    15414
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    The + operator concatenates lists:

    >>> a = [1, 2, 3]
    >>> b = [4, 5, 6]
    >>> c = a + b
    >>> print c
    [1, 2, 3, 4, 5, 6]
    

    Similarly, the * operator repeats a list a given number of times:

    >>> [0] * 4
    [0, 0, 0, 0]
    >>> [1, 2, 3] * 3
    [1, 2, 3, 1, 2, 3, 1, 2, 3]
    

    The first example repeats [0] four times. The second example repeats the list [1, 2, 3] three times.


    This page titled 1.4: List Operations is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by Allen B. Downey (Green Tea Press) .

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