- time 模块
timestring='2018-06-26 10:14:49' # 字符串时间转为时间戳 def Changetime(str1): Unixtime = int(time.mktime(time.strptime(str1, '%Y-%m-%d %H:%M:%S'))*1000) return Unixtime t1 = time.strptime(str1, '%Y-%m-%d %H:%M:%S') #将字符串转存成时间元组 t2 = Changetime(timestring) #1529979289000- time.mktime() 与 time.localtime() 互为还原函数。
- time.mktime(timetuple) ：将时间元组转换成时间戳
time.localtime([timestamp])：将时间戳转会为时间元组
- time模块
timestamp = time.time() #1530098655.6190026 timestruct = time.localtime(timestamp) t3 = time.strftime('%Y-%m-%d %H:%M:%S', timestruct) #'2018-06-27 19:24:15'- datetime 模块
import datetime timestamp = 1530098655.6190026 datetime_struct = datetime.datetime.fromtimestamp(timestamp) t4 = datetime_struct.strftime('%Y-%m-%d %H:%M:%S') #'2018-06-27 19:24:15' datetime_struct = datetime.datetime.utcfromtimestamp(timestamp) t5 = datetime_struct.strftime('%Y-%m-%d %H:%M:%S') #'2018-06-27 11:24:15'- fromtimestamp(timestamp[, tz])：将时间戳转为当地的时间元组
- utcfromtimestamp(timestamp)：将时间戳转为UTC的时间元组。以北京为例：utc时间比北京当地时间少8个小时。
- datetime
#几天/周前 import datetime import time now = datetime.datetime.now() three_days_ago = now + datetime.timedelta(days=-3) three_weeks_ago = now + datetime.timedelta(weeks=-3) #几天/周后 three_days_later = now + datetime.timedelta(days=3) three_weeks_later = now + datetime.timedelta(weeks=3) #获取时间差 start = datetime.datetime.now() time.sleep(30) end = datetime.datetime.now() print (end-start).days # 0 天数 print (end-start).total_seconds() # 30.029522 精确秒数 print (end-start).seconds # 30 秒数 print (end-start).microseconds # 29522 毫秒数dateutil 与日期相关库里的一个日期解析器 能够将字符串 转换为日期格式
import time from dateutil import parser time_string = time.ctime() # 'Wed Jun 27 19:40:17 2018' 可以是任意的时间格式 <type str> datetime_struct = parser.parse(time_string) print type(datetime_struct) # <type 'datetime.datetime'> print datetime_struct.strftime('%Y-%m-%d %H:%M:%S') # 2018-06-27 19:40:17