How I can insert a 3rd nested list in a already existing list in python?

Question

I have a list called ilist which looks like this:

    ['TCS', 1968, ['Mumbai', 'Delhi', 'Kochi', 'Banglore', 'Pune'], 'Wipro', 1981, ['Pune', 'Banagalore', 'Pune']]

Now I want to insert some additional values in a form of list something like highlighted one below:

    ['TCS', 1968, ['Mumbai', 'Delhi', 'Kochi', 'Banglore',**["ITPL","Whiteflied"]**, 'Pune'], 'Wipro', 1981, ['Pune', 'Banagalore', 'Pune']]

I thought to try the insert method, which I was able to use to insert 2nd nested loop like this:

    ilist.insert(2,['Mumbai','Delhi','Kochi','Banglore','Pune'])

But as the insert method take only one argument, i.e the index where we want to insert the value. How we can give it like below:

    ilist.insert(2,3,"ITPL","Vedhi","Electronic city")

this is giving error. Which I know will always come:

Traceback (most recent call last):
  File "G:/Python Programs/Loops.py", line 41, in <module>
ilist.insert(2,3,"ITPL","Vedhi","Electronic city")
TypeError: insert() takes exactly 2 arguments (5 given)

So what is the alternative method I can use to achieve the same? Apart from declaring a fresh list.

Dan D. · Accepted Answer · 2016-06-05 07:06:33Z

5

You have to index the first list and then insert into the list at that index:

ilist[2].insert(3, ["ITPL","Vedhi","Electronic city"])

answered Jun 5, 2016 at 7:06

Dan D.

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