Python time datetime Common processing method

Common time conversion and processing functions:

Importdatetime#Get current TimeD1 =Datetime.datetime.now ()PrintD1#The current time plus half an hourD2 = D1 + Datetime.timedelta (hours=0.5)PrintD2#format string OutputD3 = D2.strftime ('%y-%m-%d%h:%m:%s')PrintD3#Convert A string to a time typeD4 = Datetime.datetime.strptime (date,'%y-%m-%d%h:%m:%s.%f')PrintD4

Get dates for this week and the first day of the month:

#-*-coding:utf-8-*-Importdatetimedeffirst_day_of_month ():" "get the first day of the month: return:" "    #now_date = Datetime.datetime.now ()    #return (now_date + datetime.timedelta (days=-now_date.day + 1)). Replace (hour=0, minute=0, Second=0,    #microsecond=0)    returnDatetime.date.today ()-Datetime.timedelta (Days=datetime.datetime.now (). day-1)defFirst_day_of_week ():" "get the first day of the week: return:" "    returnDatetime.date.today ()-Datetime.timedelta (days=Datetime.date.today (). Weekday ())if __name__=="__main__": This_week=First_day_of_week () Last_week= This_week-datetime.timedelta (days=7) This_month=first_day_of_month () last_month= This_month-datetime.timedelta (days= (This_month-datetime.timedelta (Days=1) . Day)PrintThis_weekPrintLast_weekPrintThis_monthPrintLast_month

Python time datetime Common processing method