The all() function in Python returns True if all the elements in an iterable are True, otherwise it returns False. It takes an iterable (such as a list, tuple, or set) as input and returns a boolean value.

        For example, consider the following code:

>>> numbers = [2, 4, 6, 8, 10]
>>> all(num % 2 == 0 for num in numbers)
True

        In this example, the all() function is used to check if all the elements in the numbers list are even. Since all the elements are even, the all() function returns True.

        If any of the elements in the iterable are False, the all() function will return False. For example:

>>> numbers = [2, 4, 6, 8, 11]
>>> all(num % 2 == 0 for num in numbers)
False

        In this example, the last element in the numbers list is odd, so the all() function returns False.