from typing import Iterable


def is_seq_consecutive(it: Iterable[int]) -> bool:
    """

    :param it: any Iterable of integers
    :return: whether the iterable consists of consecutive numbers
    """
    sorted_list = sorted(it)
    consecutive_list = list(range(sorted_list[0], sorted_list[-1] + 1))
    return consecutive_list == sorted_list