Zipping Sequences with FillValue Support

Zips the elements of multiple iterables (sequences) into a single iterable of tuples. If the iterables are of unequal lengths, missing values are filled in with fillvalue.

Technology Stack : itertools

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*iterables, fillvalue=None):
    """
    Zip the elements of multiple iterables (sequences) into a single iterable of tuples.

    The *iterables argument is a variable number of iterables. If the iterables are of
    unequal lengths, missing values are filled-in with fillvalue. Default is None.

    Args:
        *iterables: An arbitrary number of iterables.
        fillvalue: Value to use for missing values if the iterables are of unequal lengths.

    Returns:
        An iterator of tuples, length equal to the longest iterable.

    Example:
        >>> list(zip_longest([1, 2, 3], [4, 5], [6], fillvalue=0))
        [(1, 4, 6), (2, 5, None), (3, None, None)]
    """
    from itertools import zip_longest as _zip_longest
    return _zip_longest(*iterables, fillvalue=fillvalue)