List is a mutable data type in Python. It means, the contents of list can be modified in place, after the object is stored in the memory. You can assign a new value at a given index position in the list
Syntax
list1[i] = newvalue
Example 1
In the following code, we change the value at index 2 of the given list.
It will produce the following output −
Original list [1, 2, 3, 4, 5] List after changing value at index 2: [1, 2, 10, 4, 5]
You can replace more consecutive items in a list with another sublist.
Example 2
In the following code, items at index 1 and 2 are replaced by items in another sublist.
It will produce the following output −
Original list: ['a', 'b', 'c', 'd'] List after changing with sublist: ['a', 'Y', 'Z', 'd']
Example 3
If the source sublist has more items than the slice to be replaced, the extra items in the source will be inserted. Take a look at the following code −
It will produce the following output −
Original list: ['a', 'b', 'c', 'd'] List after changing with sublist: ['a', 'X', 'Y', 'Z', 'd']
Example 4
If the sublist with which a slice of original list is to be replaced, has lesser items, the items with match will be replaced and rest of the items in original list will be removed.
In the following code, we try to replace "b" and "c" with "Z" (one less item than items to be replaced). It results in Z replacing b and c removed.
It will produce the following output −
Original list: ['a', 'b', 'c', 'd'] List after changing with sublist: ['a', 'Z', 'd']
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