Zip Longest with Fillvalue Iterator

The function returns an iterator that produces a series of tuples, where each tuple contains elements from different input iterables. If an iterable runs out of elements, it is padded with the fillvalue.

Technology Stack : zip_longest

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*args, fillvalue=0):
    """
    This function will return a list of tuples, where the length of the longest input iterable is maintained.
    Short iterables are padded with the fillvalue.
    """
    iters = [iter(arg) for arg in args]
    while True:
        result = []
        for iter_ in iters:
            try:
                result.append(next(iter_))
            except StopIteration:
                result.append(fillvalue)
        yield result