datetime

#coding:UTF-8
from datetime import datetime,timedelta
now = datetime.now()
#转换为str
print(now.strftime('%Y-%m-%d %H:%M:%S')) #2017-05-24 22:30:39
print(now+timedelta(hours = 1)) #2017-05-24 23:30:39
# //时间->时间戳
stm = now.timestamp() #1495636239.980662
print(stm)
#时间戳->时间

time = datetime.fromtimestamp(stm)
print(time)   #2017-05-24 22:30:39
#str转换为datetime
cday = datetime.strptime('2015-6-1 18:19:59','%Y-%m-%d %H:%M:%S')
print(cday)  #2015-06-01 18:19:59