Zip Longest Function with Fillvalue

This function is used to merge multiple iterable objects. If the iterable objects are of uneven length, fill in the missing values with fillvalue.

Technology Stack : itertools.zip_longest

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*args, fillvalue=None):
    """
    This function zips the input iterables (args) together, filling in missing values with the fillvalue
    if the iterables are of uneven length.
    """
    from itertools import zip_longest

    def _gen():
        iters = [iter(arg) for arg in args]
        while True:
            result = []
            for it in iters:
                try:
                    result.append(next(it))
                except StopIteration:
                    iters.remove(it)
            if not result:
                break
            yield tuple(result)

    return _gen()