Python脚本IF语句执行异常：满8条条目选No未输出未排序列表

问题根源 #

当录入满8条数据选择“no”不排序时，程序直接结束且未打印列表，核心原因是：
添加完第8条数据后，列表长度变为8，此时先触发if len(Race_participants) >=4的判断，若选择“no”会执行continue直接回到while循环开头，而此时len(Race_participants) <8条件不成立，循环直接终止，后续用于打印未排序列表的if len(Race_participants)==8代码块完全没机会执行。

修复及优化后的代码 #

Race_participants = []

Mworldrec = 9.58
Meuropeanrec = 9.86
Mbritishrec = 9.87
Fworldrec = 10.49
Feuropeanrec = 10.73
Fbritishrec = 10.99

# 把函数定义移到循环外，避免重复定义
def get_time(participant):
    return participant.get('time')

def get_name(participant):
    return participant.get('name')

def get_gender(participant):
    return participant.get('gender')

while len(Race_participants) < 8:
    
    name = str(input("\nWhat is the participants name? ")).lower()
    
    gender = str(input("\nIs the participant male or female? ")).lower()
    
    # 改为float类型，支持小数时间输入
    time = float(input("\nWhat is the participants race time? "))

    records_beaten = []

    if gender == "male":
        if Mworldrec > time:
            records_beaten.append("mens world record")
        if Meuropeanrec > time:
            records_beaten.append("mens european record")
        if Mbritishrec > time:
            records_beaten.append("mens British record")
        
    else:
        if Fworldrec > time:
            records_beaten.append("womens world record")
        if Feuropeanrec > time:
            records_beaten.append("womens european record")
        if Fbritishrec > time:
            records_beaten.append("womens British record")

    if records_beaten:
        print("\nParticipant", name,"has beaten the following records: ")
        for record in records_beaten:
            print("\n", record)
    
    print("\nParticipant" ,name, "Successfully recorded")
        
    person = {
        'name': name,
        'gender': gender,
        'time': time
    }
    
    Race_participants.append(person)

    # 仅在未达到8条时询问排序，避免重复询问
    if len(Race_participants) >=4 and len(Race_participants) <8:
        user_choice = input("Do you want to sort the list? (yes/no)").lower()

        if user_choice == "yes":
            Race_participants.sort(key=get_time)
            print("Sorted list in ascending order" ,Race_participants)
        elif user_choice != "no":
            print("Invalid choice. Please enter 'yes' or 'no'.")
        # 选择no时不做操作，继续循环即可，无需continue

# 循环结束后统一处理满8条的情况
print("You have reached the maximum amount of entries")
user_choice = input("\nDo you want to sort the list? (yes/no)").lower()

if user_choice == "yes":
    Race_participants.sort(key=get_time)
    print("Sorted list in ascending order" ,Race_participants)
elif user_choice == "no":
    print("Unsorted list:", Race_participants)
else:
    print("Invalid choice. Please enter 'yes' or 'no'.")

关键优化点 #

1. 将排序相关函数移到循环外部，避免每次循环重复定义函数，提升性能
2. 把time输入改为float类型，适配跑步记录的小数场景，避免输入小数时报错
3. 拆分了满4条但未到8条、以及满8条后的排序询问逻辑，避免重复触发询问，同时解决了原代码中continue导致的跳过打印问题
4. 循环结束后单独处理满8条的情况，确保无论选择yes/no都能执行对应的打印操作

内容的提问来源于stack exchange，提问作者JordonH16