Describe the process of iteration in programming or development.

Iteration is the process of sequentially traversing elements of a collection or data sequence. In programming, iteration allows executing a specific set of actions for each element.

In Python, iteration is usually implemented using loops, for example, for:

numbers = [1, 2, 3, 4, 5]
for num in numbers:
    print(num * 2)

Here, the for loop sequentially takes each element from the list numbers and executes the loop body, multiplying the number by 2 and printing the result.

Iteration can occur over lists, strings, dictionaries, files, and other iterable objects.