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What is the use of the "cycle" function in Python?

In Python, the cycle() function is part of the itertools module and is used to create an infinite iterator by cycling through the elements of an iterable. It repeatedly yields the elements from the input iterable, one after another, indefinitely.

The cycle() function takes a single iterable as an argument and returns an iterator that cycles through its elements. It is particularly useful when you want to repeat the elements of an iterable in a loop or when you need an infinite stream of values.

Here's an example to demonstrate the usage of the cycle() function:

import itertools

my_list = ['A', 'B', 'C']
cycle_iterator = itertools.cycle(my_list)

for _ in range(5):
    print(next(cycle_iterator))

# Output: A B C A B

In this example, the cycle() function creates an infinite iterator called cycle_iterator by cycling through the elements of my_list. The for loop iterates five times, and in each iteration, the next() function is used to retrieve the next value from the cycle_iterator and print it. Since the cycle_iterator is infinite, it keeps cycling through the elements of my_list indefinitely.

The cycle() function is useful in scenarios where you want to repeat or cycle through the elements of an iterable indefinitely or for a specific number of times. It allows you to create an iterator that continually produces the values from the input iterable, providing a convenient way to generate infinite sequences or repeat elements in a loop.

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