How to add element in Python to the end of list using list.insert?

You'll have to pass the new ordinal position to insert using len in this case:

In [62]:a=[1,2,3,4]a.insert(len(a),5)aOut[62]:[1, 2, 3, 4, 5]

python list insert

list.insert with any index >= len(of_the_list) places the value at the end of list. It behaves like append

Python 3.7.4>>>lst=[10,20,30]>>>lst.insert(len(lst), 101)>>>lst[10, 20, 30, 101]>>>lst.insert(len(lst)+50, 202)>>>lst[10, 20, 30, 101, 202]

Time complexity, append O(1), insert O(n)

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