Handling Uneven Length Iterables with zip_longest

The function implements a similar functionality to the zip function but can handle iterables of uneven length. If an iterable is exhausted, missing values are filled with fillvalue.

Technology Stack : Built-in library

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*iterables, fillvalue=None):
    "zip_longest(*iterables, fillvalue=fillvalue) -> zip object"
    "Returns an iterator that aggregates elements from each of the iterables.
    The iterator returns pairs from the iterables. If the iterables are of uneven
    length, missing values are filled-in with fillvalue. Default is fillvalue=None."
    iterators = [iter(it) for it in iterables]
    for i in iterators:
        next(i, None)
    while True:
        result = []
        for it in iterators:
            result.append(next(it, fillvalue))
        if None in result:
            return
        yield tuple(result)