将数字转化成时间格式
- from dateutil.parser import parse
- a=20170825
- b=str(a)
- c=parse(b)
print(c)
2017-08-25 00:00:00
将时间按照天排列,转化为一个数字,用来做时间序列分析
- from matplotlib.pylab import date2num
- e = date2num(c)
- e
- Out[30]: 736566.0
将时间转化为时间戳
- d=str(c)
- d
- Out[25]: '2017-08-25 00:00:00'
- from matplotlib.pylab import date2num
- timeArray = time.strptime(d,"%Y-%m-%d %H:%M:%S")
- timeArray
- Out[27]: time.struct_time(tm_year=2017,tm_mon=8,tm_mday=25,tm_hour=0,tm_min=0,tm_sec=0,tm_wday=4,tm_yday=237,tm_isdst=-1)
- timestamp = time.mktime(timeArray)
- timestamp
- Out[29]: 1503590400.0