#next

Description: Get the next item from an iterator (by calling the object's __next__ method).

def next(iterator):
    '''
    Get the next item from an iterator,
    raises StopIteration if there is no next item

    :param iterator: An iterator
    :return: The next item of the iterator
    '''

def next(iterator, default):
    '''
    Get the next item from an iterator, return default if there is no next item

    :param iterator: An iterator
    :param default: Default value
    :return: The next item of the iterator
    '''

Example:

import io

# Iterator
class Iterator:
    def __init__(self, stop):
        self.__stop = stop
        self.__current = 0
    
    def __next__(self):
        if self.__current < self.__stop:
            self.__current += 1
            return self.__current - 1
        else:
            raise StopIteration

# Usage
iterator = Iterator(10)
while (value := next(iterator, None)) is not None:
    print(value)
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