求助：Python实现三次输入多周几字符串并验证输入有效性

直接上可运行代码，完全满足需求：

VALID_DAYS = {'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'}
result_lists = []

for list_num in range(1, 4):
    while True:
        raw_input = input(f"Please enter the day(s) of the week (List {list_num}): ")
        # 处理输入：兼容逗号/空格分隔，清理空白内容
        input_items = [item.strip() for item in raw_input.replace(',', ' ').split() if item.strip()]
        # 检查无效输入
        bad_entries = [day for day in input_items if day not in VALID_DAYS]
        
        if not bad_entries:
            result_lists.append(input_items)
            break
        print(f"Invalid entries: {', '.join(bad_entries)}. Use exact spellings: {', '.join(VALID_DAYS)}")

# 赋值为示例中的变量名
List1, List2, List3 = result_lists
print(f"List1 = {List1}")
print(f"List2 = {List2}")
print(f"List3 = {List3}")

代码说明 #

• 输入兼容：支持用户用逗号加空格（Monday, Wednesday）或纯空格（Monday Wednesday）分隔多个日期，自动过滤空内容
• 严格验证：仅接受指定的7个大小写规范的星期几，任何拼写错误或大小写不符都会被识别为无效
• 循环校验：如果输入无效，会反复提示用户重新输入，直到内容全部合法
• 结果输出：最终生成的三个列表完全匹配给出的示例格式

测试样例 #

Please enter the day(s) of the week (List 1): Monday, Wednesday, Friday
Please enter the day(s) of the week (List 2): Tuesday Friday
Please enter the day(s) of the week (List 3): Wednesday
List1 = ['Monday', 'Wednesday', 'Friday']
List2 = ['Tuesday', 'Friday']
List3 = ['Wednesday']

内容的提问来源于stack exchange，提问作者dwburger