如何在Python跑步统计任务中正确终止循环？连续零输入修复

原代码存在两个关键问题：

• 触发连续3天0的终止条件后，仍会执行后续的平均距离计算与输出，不符合需求
• 非连续的0会被累计计数，连续懒天数的逻辑错误

修正后的代码：

def main():
    days = int(input("Enter the number of days: "))
    day = 1
    counter = 0
    total = 0
    lazy_break = False  # 标记是否因连续懒天终止

    while day <= days:
        length = float(input(f"Enter day {day} running length: "))
        day += 1
        total += length

        if length == 0:
            counter += 1
            if counter >= 3:
                print("\nYou had too many consecutive lazy days!")
                lazy_break = True
                break
        else:
            counter = 0  # 非0时重置连续计数

    # 只有没触发懒天终止时，才计算平均并输出
    if not lazy_break:
        average = round(total / days, 2)
        print()
        if average < 3:
            print(f"Your running mean of {average} km was too low!")
        else:
            print(f"You were persistent runner! With a mean of {average} km.")

if __name__ == "__main__":
    main()

修改说明：

• 新增lazy_break变量，用来记录是否因为连续3天0终止循环，避免后续代码执行
• 当输入非0距离时，重置counter为0，确保连续0的计数准确
• 循环结束后先判断lazy_break状态，只有正常完成所有天数输入时，才计算并输出平均距离相关内容

内容的提问来源于stack exchange，提问作者Student_Py