A, time package
1. Function: sleep (second)
(1) Meaning: the program is the number of seconds into hibernation
(2) Format: time.sleep (int num)
2. function: strftime ()
(1) meaning: our timestamp represented as time format we want
(2) Format: time.strftime (timestamp)
(3) Return Value Type: String
(4) Character Meaning:
% Y represents two-digit year (00-99)
% Y represents a four-digit year (000-9999)
% M (01-12)
Within a% d day of the month (0-31)
% H 24 hours (0-23) manufactured by h
% I 12 hours hour (01-12)
% M number of minutes (00 = 59)
% S seconds (00-59)
% A week simplify local name
% A full weekday name local
% B local simplify month name
% B Full month name of the local
% C represents the corresponding date and time represent the local
One day (001-366)% j years
% P local AM or PM equivalent character
% U week number of the year (00-53) for the week beginning Sunday
% W week (0-6), Sunday is the start of week
% W week number of the year (00-53) for the week beginning Monday
% X indicates the corresponding local date
% X indicates the corresponding local time
Name% Z current time zone
%%% Number itself
Two, datetime module
Provide the date and time of operation and representation.
1.date
(1) Meaning: a desired date and to provide year, month, day properties
（2）格式：datetime.date(year,month,day)
(3) Return Value: returns a string date
(4) Note: The property is added .year, .month, .day
d5 = datetime.date(2018,3,3)
print(d5)
print(d5.year)
print(d5.month)
print(d5.day)
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