Combining Iterables with FillValue

The function combines multiple iterable objects into a list of tuples, and fills in fillvalue if some iterables are shorter.

Technology Stack : itertools

Code Type : Function

Code Difficulty : Intermediate

                
                    
def zip_longest(*args, fillvalue=None):
    """
    按照最长的可迭代对象长度返回一个元组列表，如果某个可迭代对象长度不足，则用fillvalue填充。
    """
    # 获取最长的可迭代对象长度
    longest = max((len(seq) for seq in args), default=0)
    # 生成元组列表
    return [tuple(seq[i] if i < len(seq) else fillvalue for seq in args) for i in range(longest)]