What is indexing ?

Question :

What is indexing ?

All elements in a sequence are numbered as from 0, 1, 2, and so on. We can access them individually with their respective number. This is called indexing. We use an index to fetch an elements. All sequences can be indexed in this way. When we use a negative index, Python counts from the right, that is, from the last element. The last element is at position -1.