python time模块计算时间之间的差距(练习题)

 # 定义一个当前月分的一号0点字符串格式的时间
 now_time = time.strftime('%Y-%m-01 00:00:00')
 # 将格式化时间转换为结构化时间
 jiegou = time.strptime(now_time, '%Y-%m-%d %H:%M:%S')
 # 将结构化时间转换为对应的时间戳
 shijiancuo = time.mktime(jiegou)
 print('%s对应的时间戳为%s'%(now_time,shijiancuo))

 import time
 n1 = '2019-07-18 20:07:56'
 n2 = '2019-07-19 22:03:12'
 # 格式化时间转换为结构化时间
 struct_time1, struct_time2 = time.strptime(n1, '%Y-%m-%d %H:%M:%S'), time.strptime(n2, '%Y-%m-%d %H:%M:%S')
 # 结构化时间转换为时间戳格式
 struct_time1, struct_time2 = time.mktime(struct_time1), time.mktime(struct_time2)
 # 差的时间戳
 diff_time = struct_time2 - struct_time1
 # 将计算出来的时间戳转换为结构化时间
 struct_time = time.gmtime(diff_time)
 # 减去时间戳最开始的时间 并格式化输出
 print('过去了{0}年{1}月{2}日{3}小时{4}分钟{5}秒'.format(
     struct_time.tm_year-1970,
     struct_time.tm_mon-1,
     struct_time.tm_mday-1,
     struct_time.tm_hour,
     struct_time.tm_min,
     struct_time.tm_sec
 ))

import time
# t = time.time()
# print(t)
# z = time.strftime('%Y-%m-%d %H:%M:%S')
# print(z)
#
# a = time.localtime(time.time())
# print(a)
nowtime = time.time()
longtime = time.strptime('2018-10-17 6:0:0','%Y-%m-%d %H:%M:%S')
print(longtime)
d = time.mktime(longtime)
print(d)
new = nowtime - d
print(new)
s = time.localtime(new)
ss = time.strftime('%H:%M:%S',time.localtime(new))
print(ss)