python时间，时间戳相互转换函数

色魔王子7

• #encoding=utf-8
  
  
• 
  
• from datetime import date, datetime
  
• import time
  
• #已下时间都是当地时间，而不是UTC时间
  
• #获取当前时间
  
• d1 = datetime.today()
  
• d2 = date.today()
  
• print("d1=%s,    d2=%s" %(d1, d2))
  
• #格式化输出
  
• print("d1=%s"%(d1.strftime("%Y-%m-%d")))
  
• print("d2=%s"%(d2.strftime("%Y-%m")))
  
• 
  
• #获取时间戳,时间戳格式都是一样的
  
• t1 = datetime.timestamp(d1)
  
• #t2 = date.timestamp(d2)，date没有转换时间戳函数
  
• t3 = time.time()
  
• print("t1=%f,    t3=%f"%(t1,t3))
  
• 
  
• #获得任意时间的时间戳
  
• #TODO
  
• 
  
• #时间戳转换为时间
  
• D1 = datetime.fromtimestamp(t1)
  
• D2 = date.fromtimestamp(t1)
  
• print("D1=%s,    D2=%s"%(D1, D2))
  
• 
  
• 
  
• """
  
  
• strftime格式
  
• %a Locale’s abbreviated weekday name.
  
• %A Locale’s full weekday name.
  
• %b Locale’s abbreviated month name.
  
• %B Locale’s full month name.
  
• %c Locale’s appropriate date and time representation.
  
• %d Day of the month as a decimal number [01,31].
  
• %H Hour (24-hour clock) as a decimal number [00,23].
  
• %I Hour (12-hour clock) as a decimal number [01,12].
  
• %j Day of the year as a decimal number [001,366].
  
• %m Month as a decimal number [01,12].
  
• %M Minute as a decimal number [00,59].
  
• %p Locale’s equivalent of either AM or PM. (1)
  
• %S Second as a decimal number [00,61]. (2)
  
• %U Week number of the year (Sunday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Sunday are considered to be in week 0. (3)
  
• %w Weekday as a decimal number [0(Sunday),6].
  
• %W Week number of the year (Monday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Monday are considered to be in week 0. (3)
  
• %x Locale’s appropriate date representation.
  
• %X Locale’s appropriate time representation.
  
• %y Year without century as a decimal number [00,99].
  
• %Y Year with century as a decimal number.
  
• %z Time zone offset indicating a positive or negative time difference from UTC/GMT of the form +HHMM or -HHMM, where H represents decimal hour digits and M represents decimal minute digits [-23:59, +23:59].
  
• %Z Time zone name (no characters if no time zone exists).
  
• %% A literal '%' character.
  
• """
  

输出

• d1=2015-03-14 10:23:30.245054, d2=2015-03-14
  
  
• d1=2015-03-14
  
• d2=2015-03
  
• t1=1426299810.245054, t3=1426299810.245055
  
• D1=2015-03-14 10:23:30.245054, D2=2015-03-14