#10、题目：暂停一秒输出，并格式化当前时间。

import time
print(time.time())#timestamp
print(time.localtime(time.time()))#struct_time
print(time.strftime('%Y-%m-%d %X',time.localtime(time.time())))
for i in range(5):
    print (i)
    time.sleep(1)

print(time.strftime('%Y-%m-%d %X',time.localtime(time.time())))