Combining Iterables with Fillvalue

This function combines multiple iterable objects into a sequence of tuples. If an iterable is exhausted, it is filled with fillvalue.

Technology Stack : itertools.zip_longest

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*args, fillvalue=0):
    iters = [iter(arg) for arg in args]
    while True:
        result = []
        for i, it in enumerate(iters):
            try:
                result.append(next(it))
            except StopIteration:
                iters[i] = iter([fillvalue])
                result.append(fillvalue)
        yield tuple(result)