import operator


def issublist(listi, listAll):
    """
    If listi(1D) is a sub list of listAll (2D)

    Parameter
        listi: list (1D)
        listAll: list (2D)
    Return
        flag: bool
            If listi is a sub list of listAll, flat=True, else False
    """
    flag = False
    for listj in listAll:
        if operator.eq(listi, listj):
            flag = True
            return flag
    return flag