FreeCodeCamp Python时间计算器无法启动测试问题求助

核心问题1：未调用函数导致控制台无输出 #

你只定义了add_time函数，但没有在代码末尾添加函数调用语句，程序运行后不会执行任何函数内的逻辑，所以控制台处于空闲状态。

修复方法：在函数定义结束后，添加函数调用示例（根据你的需求替换参数）：

# 示例调用，可按需修改参数
print(add_time("3:00 PM", "2:12"))
print(add_time("11:59 PM", "24:05", "monday"))

核心问题2：变量名拼写错误触发异常 #

代码中存在变量名拼写错误：

• 你定义了start_minutes_tuple = start_tuple[2].partition(" ")
• 但后续错误地使用了start_tuple_minutes（下划线前后的单词写反了），这会导致NameError异常，中断程序执行。

修复方法：将所有start_tuple_minutes替换为start_minutes_tuple，修正后的代码片段：

start_tuple = start.partition(":")
start_minutes_tuple = start_tuple[2].partition(" ")
start_hours = int(start_tuple[0])
start_minutes = int(start_minutes_tuple[0])  # 此处修正变量名
am_pm = start_minutes_tuple[2]  # 此处修正变量名

其他优化建议 #

• 函数第一行的print(add_time)是打印函数对象本身，没有实际意义，可以直接删除。
• 处理分钟数时，原代码会让end_minutes同时存在整数和字符串类型，建议用格式化字符串统一类型：

  end_minutes = f"{end_minutes:02d}"
  

• 可以添加参数校验逻辑，比如检查start和duration是否符合时间格式，避免非法输入导致的错误。

修复后的完整代码示例 #

def add_time(start, duration, day_of_week=False):
    week_days_index = {"monday": 0, "tuesday": 1, "wednesday": 2, "thursday": 3, "friday": 4, "saturday": 5, "sunday": 6}
    week_days_array = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]

    duration_tuple = duration.partition(":")
    duration_hours = int(duration_tuple[0])
    duration_minutes = int(duration_tuple[2])

    start_tuple = start.partition(":")
    start_minutes_tuple = start_tuple[2].partition(" ")
    start_hours = int(start_tuple[0])
    start_minutes = int(start_minutes_tuple[0])
    am_pm = start_minutes_tuple[2]
    ampm_flip = {"AM": "PM", "PM": "AM"}

    day_amount = int(duration_hours / 24)

    end_minutes = start_minutes + duration_minutes
    if end_minutes >= 60:
        start_hours += 1
        end_minutes = end_minutes % 60

    amount_ampmflips = int((start_hours + duration_hours) / 12)
    end_hours = (start_hours + duration_hours) % 12

    end_minutes = f"{end_minutes:02d}"
    end_hours = 12 if end_hours == 0 else end_hours
    if am_pm == "PM" and start_hours + (duration_hours % 12) >= 12:
        day_amount += 1

    am_pm = ampm_flip[am_pm] if amount_ampmflips % 2 == 1 else am_pm

    returntime = f"{end_hours}:{end_minutes} {am_pm}"
    if day_of_week:
        day_of_week = day_of_week.lower()
        index = (week_days_index[day_of_week] + day_amount) % 7
        new_day = week_days_array[index]
        returntime += f", {new_day}"

    if day_amount == 1:
        return returntime + " (next day)"
    elif day_amount > 1:
        return returntime + f" ({day_amount} days later)"

    return returntime

# 示例调用
print(add_time("3:00 PM", "2:12"))
print(add_time("11:59 PM", "24:05", "monday"))

内容的提问来源于stack exchange，提问作者tom1martin