Fix Python – Insert an element at a specific index in a list and return the updated list

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Question

Asked By – ATOzTOA

I have this:

>>> a = [1, 2, 4]
>>> print a
[1, 2, 4]

>>> print a.insert(2, 3)
None

>>> print a
[1, 2, 3, 4]

>>> b = a.insert(3, 6)
>>> print b
None

>>> print a
[1, 2, 3, 6, 4]

Is there a way I can get the updated list as the result, instead of updating the original list in place?

Now we will see solution for issue: Insert an element at a specific index in a list and return the updated list

Answer

The shortest I got: b = a[:2] + [3] + a[2:]

>>>
>>> a = [1, 2, 4]
>>> print a
[1, 2, 4]
>>> b = a[:2] + [3] + a[2:]
>>> print a
[1, 2, 4]
>>> print b
[1, 2, 3, 4]

This question is answered By – ATOzTOA

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