python程序运行进程、使用时间、剩余时间显示

有很多程序运行时间比较长，如果不将运行过程输出将很难判断程序运行的时间。下边这段程序将按照上图所示的格式输出程序运行进程、已用时间、剩余时间。

def time_change(time_init):   #定义将秒转换为时分秒格式的函数
    time_list = []
    if time_init/3600 > 1:
        time_h = int(time_init/3600)
        time_m = int((time_init-time_h*3600) / 60)
        time_s = int(time_init - time_h * 3600 - time_m * 60)
        time_list.append(str(time_h))
        time_list.append('h ')
        time_list.append(str(time_m))
        time_list.append('m ')

    elif time_init/60 > 1:
        time_m = int(time_init/60)
        time_s = int(time_init - time_m * 60)
        time_list.append(str(time_m))
        time_list.append('m ')
    else:
        time_s = int(time_init)

    time_list.append(str(time_s))
    time_list.append('s')
    time_str = ''.join(time_list)
    return time_str


if __name__=="__main__":
    process = .0
    start = time.time()
    for i in range(total_num):

          ···
          ···
          ···

        if process < (i*1.0/total_num):
            if process != 0:
                end = time.time()
                use_time = end-start

                all_time = use_time / process
                res_time = all_time - use_time
                str_ues_time = time_change(use_time)
                str_res_time = time_change(res_time)

                print("Percentage of progress:%.0f%%   Used time:%s   Rest time:%s "%(process*100,str_ues_time,str_res_time))
            process = process + 0.01