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Re: insert many numbers to a list, a second method.

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  Re: insert many numbers to a list,  a second method. Peter Otten <__peter__@web.de> - 2016-01-06 14:56 +0100

#101300 — Re: insert many numbers to a list, a second method.

飛飛 wrote:

> l = list(range(0,12))
> numbers = [5,3,2,7]         #insert numbers at 5th position.
> list1 = list(range(5,9))
> list2 = list(range(0,5))
> list2.extend(numbers)     #
> for i in list1:
>     l.insert(i,list2[i])
> print(l)------>           l =  [0, 1, 2, 3, 4, 5, 3, 2, 7, 5, 6, 7, 8, 9,
> 10, 11]

Sorry, I cannot make sense of your sample code. If this is homework and your 
assignment is to find another way to insert items into a list have a look at 
slices. Example to get items three to five *out* of the list:

>>> items
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> items[2:5]
[2, 3, 4]

Size zero is legal, too:

>>> items[7:7]
[]

Assigning is similar, and the size of the slice on the left doesn't have to 
be the same as that of the list on the right. 

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