time module

1  import time
 2  print (time.time())               #Seconds from 1970 to the present, timestamp 
3 a = time.localtime()
 4  print (time.localtime(1232549153)) #Current          time zone structured time struct_time 
5  print (a.tm_year) #structured                 time can be taken out 
6  print (time.gmtime()) #time             standard time UTC 
7  print (time.mktime(time.localtime())) #structured    time is converted into timestamp 
8 time.sleep(5) #Sleep for                    5s and continue to execute 
9  
10  print(time.strftime( ' %Y-%m-%d-%H-%M-%S ' ,time.localtime())) #Convert     structured time to daily string time 
11  print (time.strftime( ' %Y-%m-%d-%X ' ,time.localtime()))     # %X == %H-%M-%S 
12  print (time.strptime( ' 2018:04:23:13:57 :35 ' , ' %Y:%m:%d:%X ' ))       #Convert string time into structured time 
13  
14  print (time.asctime( time.localtime ())) #When                  outputting string type , you can add parameter 
15  print (time.ctime())                  #It seems that you can't add parameters 
16  
17  import datetime 
 18  print (datetime.datetime.now())           #The habit of watching 2018-04-23 14:36:08.418508