Question

mylist = ["a", "apple", "b", "ball", "c", "cat"]
mylist[6] = "value"
print(mylist)

Error:

IndexError: list assignment index out of range

I remember assigning values by index in javascript, it doesn’t work in python?

Answer 1

In python single assignment does not work if the index does not exist. Javascript arrays are “sparse”, you can stash a value at any index. Instead, python lists have a defined size, and assignment is only allowed in existing indices.

If you want to add at the end, use mylist.append(value),