Python3 time module & amp; datetime module & amp; random module, python3time Module

Python3 time module & datetime module & random module, python3time Module

1 '''2 time module 3 '''4 5 # import time 6 # print (help (time) # help () help 7 # print (time. time () # number of seconds (timestamp) from January 1, 1970-key 8 # time. sleep (3) # CPU does not work, blocking-key 9 # print (time. clock () # computing CPU time 10 #11 # structured (in the form of tuples) 12 # print (time. gmtime () # Greenwich Mean time, Standard time -- Key 13 # time. struct_time (tm_year = 2017, tm_mon = 10, tm_mday = 18, tm_hour = 1, tm_min = 56, tm_sec = 47, tm_wday = 2, tm_yday = 291, tm_isdst = 0) 14 # print (time. localtime () # local time -- emphasis 15 # a1 = time. localtime () 16 # print (time. strftime ('% Y-% m-% d % H: % M: % s', a1) # customize the time display style -- emphasis 17 # print (time. strptime ('2017-09-08 10:21:10 ',' % Y-% m-% d % H: % M: % s') # convert to structured time, the format before and after must be one-to-one, and each city must be 18 # key 19 # print (time. ctime () # current time (the format cannot be dynamic). The parameter is blank by default. After adding the parameter, convert the parameter to the time, from January 1, 1970 to 20 # print (time. mktime (time. localtime () # convert to timestamp 21 22 ''' 23 datetime module 24''' 25 # import datetime26 # print (datetime. datetime. now () # display current time 27 28 29 30 31 ''' 32 random module 33''' 34 # import random35 #36 # print (random. random () # number of random builds, random () -- default range: 0-137 # print (random. randint (838) # range: 1-# print (random. choice ('hello') # randomly select 39 # print (random. choice ([123, 'asd ', [1, 2]) # randomly selected element 40 # print (random. sample ([123, 'asd '],) # TypeError: sample () takes 3 positional arguments but 4 were given41 # print (random. sample ([123, 'asd '], 1) # correct 42 # print (random. randrange (443) # range value less than 5, range 1-147 #44 #45 # verification code function 46 # version -- # def rand_code (): 48 # code = ''49 #50 # for I in range (5): 51 # if I = random. randint (0, 4): 52 # add = random. randrange (10) 53 # else: 54 # add = chr (random. randrange (260) 55 # code + = str (add) 56 # print (code) 57 # rand_code () 58 #59 # version -- # def fun1 (): 61 # code = ''62 # for I in range (5): 63 # add = random. choice ([random. randrange (10), chr (random. randrange (65,91)]) 64 # code + = str (add) 65 # print (code) 66 # fun1 ()