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  • 2 years ago

what does this function mean a[0] and a[0:1] what does that colon mean

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  1. agdgdgdgwngo
    • 2 years ago
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    In python, the colon is the slicing operator, so it returns the elements between 0 and 1, including the element in index 0 and excluding the element in 1

  2. shandelman
    • 2 years ago
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    a[0] returns the first element of the list a (we start counting at 0). a[0:1] returns all the elements in a from 0 up to but not including 1. Let's say I had a list x = [5,10,15,20,25]. x[1] would return 10. x[4] would return 25 x[5] would return an error, because x[5] is the sixth element, and there isn't one. x[2:4] would return [15,20]...it returns element 2, element 3, but not element 4.

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