Python time module, pythontime

Python time module, pythontime

Preface:

Environment: python interpreter is version 3.6.1 on windows.

Python mainly uses 1. tuples (struct_time object) 2. formatted time string 3. timestamp represents the time. this article describes how to use the built-in functions of the time module to convert each other in three forms.

 

From time import * tuple1 = (2017, 9, 23, 14, 45, 10, 0, 0) def demo1 (): "struct_time constructor" struct_time1 = struct_time (tuple1) # convert the tuples of nine elements to the print (type (struct_time1), struct_time1) object of the struct_time class) def demo2 (): "strftime function usage: sets the tuples (the struct_time class is a subclass of the tuple class) convert to string "strftime1 = strftime ('% Y-% m-% d % H: % M: % S % A % p % a % z % B % B % I % C') print (type (strftime1), strftime1) strftime2 = strftime ('% Y-% m-% d', tuple1) print (type (strftime2), strftime2) strftime2 = strftime ('% Y-% m-% d % H: % M: % s', localtime () print (type (strftime2), strftime2) def demo3 (): "demonstrate ctime function usage" ctime1 = ctime () # convert the timestamp of local time directly to the string representation of time. print (type (ctime1 ), ctime1) ctime2 = ctime (1500000000) # convert the timestamp directly to the time string representation print (type (ctime2), ctime2) def demo4 (): "demonstrate strptime function usage" strptime1 = strptime ('2017-09-21 15:07:38 ',' % Y-% m-% d % H: % M: % s') print (type (strptime1), strptime1) print (strptime1.tm _ yday) def demo5 (): "demonstrate the usage of gmtime and localtime functions" gmtime1 = gmtime (1500000000) # convert a time stamp to an object of the struct_time class (primary meridian time) print (type (gmtime1 ), gmtime1) gmtime1 = gmtime () # convert the timestamp of the current time to an object of the struct_time class (local meridian time), print (type (gmtime1), gmtime1) localtime1 = localtime (1500000000) # convert the timestamp to the print _time Class Object (local time) print (type (localtime1), localtime1) print (type (localtime (), localtime ()) # convert the timestamp of the current time to the object of the struct_time class (local time) def demo6 (): "demonstrate mktime function usage" mktime1 = mktime (tuple1) # convert a tuple to a timestamp print (type (mktime1), mktime1)

Def demo7 ():
"""
Demonstrate the usage of the time Function
"""
Print (time ())
Print (mktime (localtime ()))

demo1()demo2()demo3()demo4()demo5()demo6()

demo7()

'''
Format characters used by strptime and strftime:

• % Y two-digit year (00-99)
• % Y indicates the four-digit year (000-9999)
• % M month (01-12)
• One day in % d month (0-31)
• % H hour in 24-hour format (0-23)
• % I 12-hour (01-12)
• % M minutes (00 = 59)
• % S seconds (00-59)
• % A local simplified week name
• % A local full week name
• % B local simplified month name
• % B local full month name
• % C local Date and Time
• % J one day in the year (001-366)
• % P local equivalent of A. M. or P. M.
• % U number of weeks in a year (00-53) Sunday is the start of the week
• % W Week (0-6), Sunday is the beginning of the week
• % W number of weeks in a year (00-53) Monday is the start of the week
• % X local date Representation
• % X Local Time Representation
• % Z Current Time Zone name
• % Itself

Output: (some outputs will change due to the time when the program runs)

<Class 'time. struct_time '> time. struct_time (maid = 2017, tm_mon = 9, tm_mday = 23, tm_hour = 14, tm_min = 45, tm_sec = 10, tm_wday = 0, tm_yday = 0, tm_isdst = 0)
<Class 'str'> 19:16:19 Thursday PM Thu + 0800 Sep September 07 Thu Sep 21 19:16:19 2017
<Class 'str'>
<Class 'str'> 19:16:19
<Class 'str'> Thu Sep 21 19:16:19 2017
<Class 'str'> Fri Jul 14 10:40:00 2017
<Class 'time. struct_time '> time. struct_time (tm_year = 2017, tm_mon = 9, tm_mday = 21, tm_hour = 15, tm_min = 7, tm_sec = 38, tm_wday = 3, tm_yday = 264, tm_isdst =-1)
264
<Class 'time. struct_time '> time. struct_time (tm_year = 2017, tm_mon = 7, tm_mday = 14, tm_hour = 2, tm_min = 40, tm_sec = 0, tm_wday = 4, tm_yday = 195, tm_isdst = 0)
<Class 'time. struct_time '> time. struct_time (tm_year = 2017, tm_mon = 9, tm_mday = 21, tm_hour = 11, tm_min = 16, tm_sec = 19, tm_wday = 3, tm_yday = 264, tm_isdst = 0)
<Class 'time. struct_time '> time. struct_time (tm_year = 2017, tm_mon = 7, tm_mday = 14, tm_hour = 10, tm_min = 40, tm_sec = 0, tm_wday = 4, tm_yday = 195, tm_isdst = 0)
<Class 'time. struct_time '> time. struct_time (tm_year = 2017, tm_mon = 9, tm_mday = 21, tm_hour = 19, tm_min = 16, tm_sec = 19, tm_wday = 3, tm_yday = 264, tm_isdst = 0)
<Class 'float'> 1506149110.0

1505993665.347068
1505993665.0