Python time stamp to duration

time2duration.py

import time
from math import ceil


def time2duration(stamp):
    # 对当前时间向上取整，防止出现负数~
    stamp = int(ceil(stamp))
    cur_time = int(ceil(time.time()))
    during = cur_time - stamp
    if during < 30:
        return str(during) + ' 秒前'
    if during < 60:
        return '半分钟前'
    if during < 3600:
        return str(int(during/60)) + ' 分钟前'
    if during < 24*3600:
        return str(int(during/3600)) + ' 小时前'
    if during < 365*24*3600:
        return str(int(during/(24*3600))) + ' 天前'
    #return str(int(during/(24*3600))) + '天前'
    ltime = time.localtime(stamp)
    return time.strftime("%Y-%m-%d %H:%m:%S %p", ltime)