具体代码如下所示：

# 时间的替换import time,datetimetoday = datetime.datetime.today()print('当前时间：',today)print('当前时间转换成整h整m整s:',today.replace(minute=0, second=0))# 时间的加减res1 = today + datetime.timedelta(days=1,minutes=60)print('增加的时间为res:',res1)res0 = datetime.datetime.now()print('未格式化时间res0：',res0)# 将时间转字符串格式化res2 = datetime.datetime.now().strftime("%Y/%m/%d")print('格式化后的时间res:',res2)# 字符串转时间res3 = datetime.datetime.strptime('2018/10/11', "%Y/%m/%d")print('字符串转特定的时间res：',res3) # 转成时间元组print('转成时间元组:',today.timetuple())#日期0000时间格式转换为普通时间格式str_time ='2018-12-14 00:00:00'start_date = datetime.datetime.strptime(str_time, "%Y-%m-%d %H:%M:%S")print('start_date:',start_date)print('---------第二部分----------')from datetime import datetimefrom datetime import timedelta# 1) 获取当前日期和时间today = datetime.today() # 返回当前时间时分秒都为0print('当前today:',today)today1 = datetime.now() # 返回当前日期和时间# now.hour # 时# now.minute # 分# now.isoweekday（）# 返回的1-7代表周一--周日；# now.weekday（）# 返回的0-6代表周一--到周日# 而标准格式种%w 1-6表示周一--周六，0代表周日print('today1', today1 )today2 = datetime.utcnow() # 返回当前东八区时间就是比当时时间少8个小时print('today2:',today2)# 2) 获取指定日期和时间,加减计算time= datetime(2019, 5, 12, 12, 13, 14)d= time + timedelta(weeks=0, days=0, hours=0, minutes=0, seconds=0, milliseconds=0, microseconds=0, )#依次为 "周" "天", "时","分","秒","毫秒","微秒"print('time:',time)print('d:',d)time1= "2019-5-12 12:13:14" # 字符串 日期d1 = datetime.strptime(str(time1),'%Y-%m-%d %H:%M:%S')plus= d1 + timedelta(days=1) # 加minus = d1 - timedelta(days=1) # 减print('d1:',d1)print('plus:',plus)print('minus:',minus)time2= 20190512121314d2 = datetime.strptime(str(time2),'%Y%m%d%H%M%S')delta = d2 + timedelta(days=1)print('time2:',time2)print('d2:',d2 )print('delta:',delta)# 3) 日期datetime-timestamp 时间戳相互转now_stamp = time.timestamp()print('指定时间对应时间戳 :', now_stamp)print('对应本地时间 :', datetime.fromtimestamp(now_stamp ))print('UTC标准时间 :', datetime.utcfromtimestamp(now_stamp ))print('本周的第几天:', datetime.fromtimestamp(now_stamp ).weekday())# 4) datetime 时间 转换为str字符串now = datetime.now()print('当前时间的的:', now)print('转换为str字符串:',now.strftime('%Y%m%d%H%M%S'))print('--------第三部分-------------')import datetimefrom datetime import timedeltanow = datetime.datetime.now()print('now:',now)# 今天today = nowprint('today:',today)# 昨天yesterday = now - timedelta(days=1)print('yesterday:',yesterday)# 明天tomorrow = now + timedelta(days=1)print('tomorrow:',tomorrow)# 当前季度now_quarter = now.month / 3 if now.month % 3 == 0 else now.month / 3 + 1print('now_quarter:',now_quarter)# 本周第一天和最后一天this_week_start = now - timedelta(days=now.weekday())this_week_end = now + timedelta(days=6 - now.weekday())print('this_week_start:',this_week_start)print('this_week_end:',this_week_end)# 上周第一天和最后一天last_week_start = now - timedelta(days=now.weekday() + 7)last_week_end = now - timedelta(days=now.weekday() + 1)print('last_week_start:',last_week_start)print('last_week_end:',last_week_end)# 本月第一天和最后一天this_month_start = datetime.datetime(now.year, now.month, 1)month = now.month + 1if month == 13: month = 1 year = now.year + 1 this_month_end = datetime.datetime(now.year + 1, 1, 1) - timedelta(days=1) print('this_month_end:',this_month_end )else: this_month_end = datetime.datetime(now.year, now.month + 1, 1) - timedelta(days=1) print('this_month_end:',this_month_end )# 上月第一天和最后一天last_month_end = this_month_start - timedelta(days=1)last_month_start = datetime.datetime(last_month_end.year, last_month_end.month, 1)print('last_month_end:',last_month_end)print('last_month_start:',last_month_start)# 本季第一天和最后一天month = (now.month - 1) - (now.month - 1) % 3 + 1this_quarter_start = datetime.datetime(now.year, month, 1)this_quarter_end = datetime.datetime(now.year, month + 3, 1) - timedelta(days=1)print('this_quarter_start:',this_quarter_start)print('this_quarter_end:',this_quarter_end)# 上季第一天和最后一天last_quarter_end = this_quarter_start - timedelta(days=1)last_quarter_start = datetime.datetime(last_quarter_end.year, last_quarter_end.month - 2, 1)print('last_quarter_end:',last_quarter_end)print('last_quarter_start:',last_quarter_start)# 本年第一天和最后一天this_year_start = datetime.datetime(now.year, 1, 1)this_year_end = datetime.datetime(now.year + 1, 1, 1) - timedelta(days=1)print('this_year_start:',this_year_start)print('this_year_end:',this_year_end)# 去年第一天和最后一天last_year_end = this_year_start - timedelta(days=1)last_year_start = datetime.datetime(last_year_end.year, 1, 1)print('last_year_end:',last_year_end)print('last_year_start:',last_year_start)

打印结果如下：

总结

到此这篇关于python datetime时间格式的相互转换的文章就介绍到这了,更多相关python datetime时间格式的相互转换内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！