如何从列表中随机选择，同时排除之前的随机选择？

import random

def choose_random_excluding_previous(lst, previous_choices):
    if set(previous_choices) == set(lst):
        previous_choices.clear()
    
    available_choices = list(set(lst) - set(previous_choices))
    if not available_choices:
        previous_choices.clear()

    choice = random.choice(available_choices)
    previous_choices.append(choice)
    return choice

# 示例使用
choices = ['A', 'B', 'C', 'D', 'E']
previous_choices = []
for _ in range(5):
    random_choice = choose_random_excluding_previous(choices, previous_choices)
    print(f"随机选择的元素：{random_choice}")