是否将HH:MM:SS格式的时间仅转换为秒？

def time_to_seconds(time_str):
    hours, minutes, seconds = map(int, time_str.split(':'))
    total_seconds = hours * 3600 + minutes * 60 + seconds
    return total_seconds

# 示例
time_str = "12:34:56"
seconds = time_to_seconds(time_str)
print(f"{time_str} 转换为秒是 {seconds} 秒")

def time_to_seconds(time_str):
    try:
        hours, minutes, seconds = map(int, time_str.split(':'))
        total_seconds = hours * 3600 + minutes * 60 + seconds
        return total_seconds
    except ValueError:
        return "输入格式不正确，请使用 HH:MM:SS 格式。"

# 示例
time_str = "12:34:56"
seconds = time_to_seconds(time_str)
print(seconds)

def time_to_seconds(time_str):
    try:
        hours, minutes, seconds = map(int, time_str.split(':'))
        if hours < 0 or hours >= 24 or minutes < 0 or minutes >= 60 or seconds < 0 or seconds >= 60:
            return "时间超出范围，请确保小时在 0-23 之间，分钟和秒在 0-59 之间。"
        total_seconds = hours * 3600 + minutes * 60 + seconds
        return total_seconds
    except ValueError:
        return "输入格式不正确，请使用 HH:MM:SS 格式。"

# 示例
time_str = "25:34:56"
seconds = time_to_seconds(time_str)
print(seconds)