python模块之time模块学习笔记

>>> time.time()
1356871542.263558
>>>
 

>>> time.clock()
0.31
 

>>> time.localtime()
time.struct_time(tm_year=2012, tm_mon=12, tm_mday=30, tm_hour=20, tm_min=50, tm_sec=46, tm_wday=6, tm_yday=365, tm_isdst=0)
>>> tm=time.localtime()
>>> tm.tm_year
2012
>>> time.localtime(1)
time.struct_time(tm_year=1970, tm_mon=1, tm_mday=1, tm_hour=8, tm_min=0, tm_sec=1, tm_wday=3, tm_yday=1, tm_isdst=0)
>>>
 

>>> time.ctime()
'Sun Dec 30 20:55:19 2012'
>>> time.ctime(1)
'Thu Jan 1 08:00:01 1970'
>>>
 

>>> time.mktime(time.localtime())
1356872879.0
>>> time.time()
1356872885.819205
>>>
 

>>> time.strftime('%Y-%M-%d %H:%m:%S',time.localtime())
'2012-24-30 21:12:27'

%% a literal %

       %a locale's abbreviated weekday name (e.g., Sun)

       %A locale's full weekday name (e.g., Sunday)

       %b locale's abbreviated month name (e.g., Jan)

       %B locale's full month name (e.g., January)

       %c locale's date and time (e.g., Thu Mar 3 23:05:25 2005)

       %C century; like %Y, except omit last two digits (e.g., 20)

       %d day of month (e.g., 01)

       %D date; same as %m/%d/%y

       %e day of month, space padded; same as %_d

       %F full date; same as %Y-%m-%d

       %g last two digits of year of ISO week number (see %G)

       %G year of ISO week number (see %V); normally useful only with %V

       %h same as %b

       %H hour (00..23)

       %I hour (01..12)

       %j day of year (001..366)

       %k hour, space padded ( 0..23); same as %_H

       %l hour, space padded ( 1..12); same as %_I

       %m month (01..12)

       %M minute (00..59)

       %n a newline

       %p locale's equivalent of either AM or PM; blank if not known

       %P like %p, but lower case
 
       %r locale
 

>>> print time.strptime('2012-12-12','%Y-%m-%d')
time.struct_time(tm_year=2012, tm_mon=12, tm_mday=12, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=2, tm_yday=347, tm_isdst=-1)
>>>