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Python日期转换

Posted on in python • 58 words • 1 minute read
Tags: 内置函数
  • 秒数是相对于1970.1.1号的秒数
  • 日期的模块有time、datetime
import datetime
t = datetime.datetime(2009, 10, 21, 0, 0, 10, 10)   # 分别是年份、月份、日、小时、分钟、秒、微妙(10-6秒)
print (t-datetime.datetime(1970,1,1)).total_seconds()  # 总共多少秒
import datetime, time
t = datetime.datetime(2011, 10, 21, 0, 0)
time.mktime(t.timetuple())
1319148000.0
string转datetime
str = '2012-11-19'
date_time = datetime.datetime.strptime(str,'%Y-%m-%d')
datetime.datetime(2012,11,19,0,0)
datetime转string
date_time.strftime('%Y-%m-%d')

'2012-11-19'

datetime转时间戳

time_time = time.mktime(date_time.timetuple())

时间戳转string

  • time.strftime('%Y-%m-%d',time.localtime(time_time))
  • ‘2012-11-19’

date转datetime

date = datetime.date.today()

date

datetime.date(2012,11,19)

datetime.datetime.strptime(str(date),'%Y-%m-%d')    #将date转换为str，在由str转换为datetime

datetime.datetime(2012,11,19,0,0)