Zip Longest Function for Merging Iterables with Fillvalue

The function is used to merge multiple iterable objects. If some iterable objects are shorter than the others, it fills them with the fillvalue.

Technology Stack : Built-in library itertools

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*args, fillvalue=None):
    # 从内置库itertools中选取zip_longest函数，用于合并多个可迭代对象，如果长度不一致，则以fillvalue填充
    iterator = iter(args)
    longest = max(len(lst) for lst in args, default=0)
    for i in range(longest):
        yield tuple(next(iterator, fillvalue) for _ in args)

# JSON格式的代码描述