Grouping Iterables with Fillvalue

The function is used to group elements from multiple iterable objects, filling with a specified fillvalue if one of the iterables is exhausted.

Technology Stack : Iterators (iterable)

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*args, fillvalue=None):
    """
    Group elements of several iterables together while filling with fillvalue if an iterable is exhausted.
    """
    iterators = [iter(arg) for arg in args]
    while True:
        result = []
        for iterator in iterators:
            try:
                result.append(next(iterator))
            except StopIteration:
                result.append(fillvalue)
        yield result