Here, val accesses each item of sequence on each iteration. The syntax of a for loop is: for val in sequence: This way, the loop runs until the last element of the list is accessed. Language is updated with the next element of the list, and the print statement is executed again. Swift, so the print statement inside the loop is executed. Initially, the value of language is set to the first element of the array,i.e. In the above example, we have created a list called languages. In Python, a for loop is used to iterate over sequences such as lists, tuples, string, etc. It's just a simple example you can achieve much more with loops. In computer programming, loops are used to repeat a block of code.įor example, if we want to show a message 100 times, then we can use a loop.
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