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PythonÄ£¿éѧϰ datetime½éÉÜ

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    datetimeÄ£¿é¶¨ÒåÁËÁ½¸ö³£Á¿£ºdatetime.MINYEARºÍdatetime.MAXYEAR£¬·Ö±ð±íʾdatetimeËùÄܱíʾµÄ×îС¡¢×î´óÄê·Ý¡£ÆäÖУ¬MINYEAR = 1£¬MAXYEAR = 9999¡££¨¶ÔÓÚżµÈÍæ¼Ò£¬Õâ¸ö·¶Î§ÒѾ­×ã¹»ÓÃÒÓ~~£©

    datetimeÄ£¿é¶¨ÒåÁËÏÂÃæÕ⼸¸öÀࣺ

    •datetime.date£º±íʾÈÕÆÚµÄÀà¡£³£ÓõÄÊôÐÔÓÐyear, month, day£»

    •datetime.time£º±íʾʱ¼äµÄÀà¡£³£ÓõÄÊôÐÔÓÐhour, minute, second, microsecond£»

    •datetime.datetime£º±íʾÈÕÆÚʱ¼ä¡£

    •datetime.timedelta£º±íʾʱ¼ä¼ä¸ô£¬¼´Á½¸öʱ¼äµãÖ®¼äµÄ³¤¶È¡£

    •datetime.tzinfo£ºÓëʱÇøÓйصÄÏà¹ØÐÅÏ¢¡££¨ÕâÀï²»Ïêϸ³ä·ÖÌÖÂÛ¸ÃÀ࣬¸ÐÐËȤµÄͯЬ¿ÉÒԲο¼pythonÊֲᣩ

    ×¢£ºÉÏÃæÕâЩÀàÐ͵ĶÔÏó¶¼ÊDz»¿É±ä£¨immutable£©µÄ¡£

    ÏÂÃæÏêϸ½éÉÜÕâЩÀàµÄʹÓ÷½Ê½¡£

    dateÀà

    dateÀà±íʾһ¸öÈÕÆÚ¡£ÈÕÆÚÓÉÄê¡¢Ô¡¢ÈÕ×é³É£¨µØÇòÈ˶¼ÖªµÀ~~£©¡£dateÀàµÄ¹¹Ô캯ÊýÈçÏ£º

    class datetime.date(year, month, day)£º²ÎÊýµÄÒâÒå¾Í²»¶à×÷½âÊÍÁË£¬Ö»ÊÇÓм¸µãҪעÒâһϣº

    •yearµÄ·¶Î§ÊÇ[MINYEAR, MAXYEAR]£¬¼´[1, 9999]£»

    •monthµÄ·¶Î§ÊÇ[1, 12]¡££¨Ô·ÝÊÇ´Ó1¿ªÊ¼µÄ£¬²»ÊÇ´Ó0¿ªÊ¼µÄ~_~£©£»

    •dayµÄ×î´óÖµ¸ù¾Ý¸ø¶¨µÄyear, month²ÎÊýÀ´¾ö¶¨¡£ÀýÈçÈòÄê2Ô·ÝÓÐ29Ì죻

    dateÀඨÒåÁËһЩ³£ÓõÄÀà·½·¨ÓëÀàÊôÐÔ£¬·½±ãÎÒÃDzÙ×÷£º

    •date.max¡¢date.min£ºdate¶ÔÏóËùÄܱíʾµÄ×î´ó¡¢×îСÈÕÆÚ£»

    •date.resolution£ºdate¶ÔÏó±íʾÈÕÆÚµÄ×îСµ¥Î»¡£ÕâÀïÊÇÌì¡£

    •date.today()£º·µ»ØÒ»¸ö±íʾµ±Ç°±¾µØÈÕÆÚµÄdate¶ÔÏó£»

    •date.fromtimestamp(timestamp)£º¸ù¾Ý¸ø¶¨µÄʱ¼ä¾£¬·µ»ØÒ»¸ödate¶ÔÏó£»

    •datetime.fromordinal(ordinal)£º½«GregorianÈÕÀúʱ¼äת»»Îªdate¶ÔÏ󣻣¨Gregorian Calendar£ºÒ»ÖÖÈÕÀú±íʾ·½·¨£¬ÀàËÆÓÚÎÒ¹úµÄÅ©Àú£¬Î÷·½¹ú¼ÒʹÓñȽ϶࣬´Ë´¦²»Ïêϸչ¿ªÌÖÂÛ¡££©

    ʹÓÃÀý×Ó£º

    ¸´ÖÆ´úÂë´úÂëÈçÏÂ:

    from datetime import *

    import time

    print 'date.max:', date.max

    print 'date.min:', date.min

    print 'date.today():', date.today()

    print 'date.fromtimestamp():', date.fromtimestamp(time.time())

    # # ---- ½á¹û ----

    # date.max: 9999-12-31

    # date.min: 0001-01-01

    # date.today(): 2010-04-06

    # date.fromtimestamp(): 2010-04-06

    dateÌṩµÄʵÀý·½·¨ºÍÊôÐÔ£º

    •date.year¡¢date.month¡¢date.day£ºÄê¡¢Ô¡¢ÈÕ£»

    •date.replace(year, month, day)£ºÉú³ÉÒ»¸öеÄÈÕÆÚ¶ÔÏó£¬ÓòÎÊýÖ¸¶¨µÄÄ꣬Ô£¬ÈÕ´úÌæÔ­ÓжÔÏóÖеÄÊôÐÔ¡££¨Ô­ÓжÔÏóÈÔ±£³Ö²»±ä£©

    •date.timetuple()£º·µ»ØÈÕÆÚ¶ÔÓ¦µÄtime.struct_time¶ÔÏó£»

    •date.toordinal()£º·µ»ØÈÕÆÚ¶ÔÓ¦µÄGregorian CalendarÈÕÆÚ£»

    •date.weekday()£º·µ»Øweekday£¬Èç¹ûÊÇÐÇÆÚÒ»£¬·µ»Ø0£»Èç¹ûÊÇÐÇÆÚ2£¬·µ»Ø1£¬ÒÔ´ËÀàÍÆ£»

    •data.isoweekday()£º·µ»Øweekday£¬Èç¹ûÊÇÐÇÆÚÒ»£¬·µ»Ø1£»Èç¹ûÊÇÐÇÆÚ2£¬·µ»Ø2£¬ÒÔ´ËÀàÍÆ£»

    •date.isocalendar()£º·µ»Ø¸ñʽÈç(year£¬month£¬day)µÄÔª×飻

    •date.isoformat()£º·µ»Ø¸ñʽÈç'YYYY-MM-DD'µÄ×Ö·û´®£»

    •date.strftime(fmt)£º×Ô¶¨Òå¸ñʽ»¯×Ö·û´®¡£ÔÚÏÂÃæÏêϸ½²½â¡£

    ʹÓÃÀý×Ó£º

    ¸´ÖÆ´úÂë´úÂëÈçÏÂ:

    now = date(2010, 04, 06)

    tomorrow = now.replace(day = 07)

    print 'now:', now, ', tomorrow:', tomorrow

    print 'timetuple():', now.timetuple()

    print 'weekday():', now.weekday()

    print 'isoweekday():', now.isoweekday()

    print 'isocalendar():', now.isocalendar()

    print 'isoformat():', now.isoformat()

    # # ---- ½á¹û ----

    # now: 2010-04-06 , tomorrow: 2010-04-07

    # timetuple(): (2010, 4, 6, 0, 0, 0, 1, 96, -1)

    # weekday(): 1

    # isoweekday(): 2

    # isocalendar(): (2010, 14, 2)

    # isoformat(): 2010-04-06

    date»¹¶ÔijЩ²Ù×÷½øÐÐÁËÖØÔØ£¬ËüÔÊÐíÎÒÃǶÔÈÕÆÚ½øÐÐÈçÏÂһЩ²Ù×÷£º

    •date2 = date1 + timedelta # ÈÕÆÚ¼ÓÉÏÒ»¸ö¼ä¸ô£¬·µ»ØÒ»¸öеÄÈÕÆÚ¶ÔÏó£¨timedelta½«ÔÚÏÂÃæ½éÉÜ£¬±íʾʱ¼ä¼ä¸ô£©

    •date2 = date1 - timedelta # ÈÕÆÚ¸ôÈ¥¼ä¸ô£¬·µ»ØÒ»¸öеÄÈÕÆÚ¶ÔÏó

    •timedelta = date1 - date2 # Á½¸öÈÕÆÚÏà¼õ£¬·µ»ØÒ»¸öʱ¼ä¼ä¸ô¶ÔÏó

    •date1 < date2 # Á½¸öÈÕÆÚ½øÐбȽÏ

    ×¢£º¶ÔÈÕÆÚ½øÐвÙ×÷ʱ£¬Òª·ÀÖ¹ÈÕÆÚ³¬³öËüËùÄܱíʾµÄ·¶Î§¡£

    ʹÓÃÀý×Ó£º

    ¸´ÖÆ´úÂë´úÂëÈçÏÂ:

    now = date.today()

    tomorrow = now.replace(day = 7)

    delta = tomorrow - now

    print 'now:', now, ' tomorrow:', tomorrow

    print 'timedelta:', delta

    print now + delta

    print tomorrow > now

    # # ---- ½á¹û ----

    # now: 2010-04-06 tomorrow: 2010-04-07

    # timedelta: 1 day, 0:00:00

    # 2010-04-07

    # True

    TimeÀà

    timeÀà±íʾʱ¼ä£¬ÓÉʱ¡¢·Ö¡¢ÃëÒÔ¼°Î¢Ãë×é³É¡££¨ÎÒ²»ÊÇ´Ó»ðÐÇÀ´µÄ~~£©timeÀàµÄ¹¹Ô캯ÊýÈçÏ£º

    class datetime.time(hour[, minute[, second[, microsecond[, tzinfo]]]]) £º¸÷²ÎÊýµÄÒâÒå²»×÷½âÊÍ£¬ÕâÀïÁôÒâһϲÎÊýtzinfo£¬Ëü±íʾʱÇøÐÅÏ¢¡£×¢Òâһϸ÷²ÎÊýµÄÈ¡Öµ·¶Î§£ºhourµÄ·¶Î§Îª[0, 24)£¬minuteµÄ·¶Î§Îª[0, 60)£¬secondµÄ·¶Î§Îª[0, 60)£¬microsecondµÄ·¶Î§Îª[0, 1000000)¡£

    timeÀඨÒåµÄÀàÊôÐÔ£º

    •time.min¡¢time.max£ºtimeÀàËùÄܱíʾµÄ×îС¡¢×î´óʱ¼ä¡£ÆäÖУ¬time.min = time(0, 0, 0, 0)£¬ time.max = time(23, 59, 59, 999999)£»

    •time.resolution£ºÊ±¼äµÄ×îСµ¥Î»£¬ÕâÀïÊÇ1΢Ã룻

    timeÀàÌṩµÄʵÀý·½·¨ºÍÊôÐÔ£º

    •time.hour¡¢time.minute¡¢time.second¡¢time.microsecond£ºÊ±¡¢·Ö¡¢Ã롢΢Ã룻

    •time.tzinfo£ºÊ±ÇøÐÅÏ¢£»

    •time.replace([hour[, minute[, second[, microsecond[, tzinfo]]]]])£º´´½¨Ò»¸öеÄʱ¼ä¶ÔÏó£¬ÓòÎÊýÖ¸¶¨µÄʱ¡¢·Ö¡¢Ã롢΢Ãë´úÌæÔ­ÓжÔÏóÖеÄÊôÐÔ£¨Ô­ÓжÔÏóÈÔ±£³Ö²»±ä£©£»

    •time.isoformat()£º·µ»ØÐÍÈç"HH:MM:SS"¸ñʽµÄ×Ö·û´®±íʾ£»

    •time.strftime(fmt)£º·µ»Ø×Ô¶¨Òå¸ñʽ»¯×Ö·û´®¡£ÔÚÏÂÃæÏêϸ½éÉÜ£»

    ʹÓÃÀý×Ó£º

    ¸´ÖÆ´úÂë´úÂëÈçÏÂ:

    from datetime import *

    tm = time(23, 46, 10)

    print 'tm:', tm

    print 'hour: %d, minute: %d, second: %d, microsecond: %d' /

    % (tm.hour, tm.minute, tm.second, tm.microsecond)

    tm1 = tm.replace(hour = 20)

    print 'tm1:', tm1

    print 'isoformat():', tm.isoformat()

    # # ---- ½á¹û ----

    # tm: 23:46:10

    # hour: 23, minute: 46, second: 10, microsecond: 0

    # tm1: 20:46:10

    # isoformat(): 23:46:10

    ÏñdateÒ»Ñù£¬Ò²¿ÉÒÔ¶ÔÁ½¸ötime¶ÔÏó½øÐбȽϣ¬»òÕßÏà¼õ·µ»ØÒ»¸öʱ¼ä¼ä¸ô¶ÔÏó¡£ÕâÀï¾Í²»ÌṩÀý×ÓÁË¡£

    datetimeÀà

    datetimeÊÇdateÓëtimeµÄ½áºÏÌ壬°üÀ¨dateÓëtimeµÄËùÓÐÐÅÏ¢¡£ËüµÄ¹¹Ô캯ÊýÈçÏ£ºdatetime.datetime(year, month, day[, hour[, minute[, second[, microsecond[, tzinfo]]]]])£¬¸÷²ÎÊýµÄº¬ÒåÓëdate¡¢timeµÄ¹¹Ô캯ÊýÖеÄÒ»Ñù£¬Òª×¢Òâ²ÎÊýÖµµÄ·¶Î§¡£

    datetimeÀඨÒåµÄÀàÊôÐÔÓë·½·¨£º

    •datetime.min¡¢datetime.max£ºdatetimeËùÄܱíʾµÄ×îСֵÓë×î´óÖµ£»

    •datetime.resolution£ºdatetime×îСµ¥Î»£»

    •datetime.today()£º·µ»ØÒ»¸ö±íʾµ±Ç°±¾µØʱ¼äµÄdatetime¶ÔÏó£»

    •datetime.now([tz])£º·µ»ØÒ»¸ö±íʾµ±Ç°±¾µØʱ¼äµÄdatetime¶ÔÏó£¬Èç¹ûÌṩÁ˲ÎÊýtz£¬Ôò»ñÈ¡tz²ÎÊýËùָʱÇøµÄ±¾µØʱ¼ä£»

    •datetime.utcnow()£º·µ»ØÒ»¸öµ±Ç°utcʱ¼äµÄdatetime¶ÔÏó£»

    •datetime.fromtimestamp(timestamp[, tz])£º¸ù¾Ýʱ¼ä¾´´½¨Ò»¸ödatetime¶ÔÏ󣬲ÎÊýtzÖ¸¶¨Ê±ÇøÐÅÏ¢£»

    •datetime.utcfromtimestamp(timestamp)£º¸ù¾Ýʱ¼ä¾´´½¨Ò»¸ödatetime¶ÔÏó£»

    •datetime.combine(date, time)£º¸ù¾ÝdateºÍtime£¬´´½¨Ò»¸ödatetime¶ÔÏó£»

    •datetime.strptime(date_string, format)£º½«¸ñʽ×Ö·û´®×ª»»Îªdatetime¶ÔÏó£»

    ʹÓÃÀý×Ó£º

    ¸´ÖÆ´úÂë´úÂëÈçÏÂ:

    from datetime import *

    import time

    print 'datetime.max:', datetime.max

    print 'datetime.min:', datetime.min

    print 'datetime.resolution:', datetime.resolution

    print 'today():', datetime.today()

    print 'now():', datetime.now()

    print 'utcnow():', datetime.utcnow()

    print 'fromtimestamp(tmstmp):', datetime.fromtimestamp(time.time())

    print 'utcfromtimestamp(tmstmp):', datetime.utcfromtimestamp(time.time())

    # ---- ½á¹û ----

    # datetime.max: 9999-12-31 23:59:59.999999

    # datetime.min: 0001-01-01 00:00:00

    # datetime.resolution: 0:00:00.000001

    # today(): 2010-04-07 09:48:16.234000

    # now(): 2010-04-07 09:48:16.234000

    # utcnow(): 2010-04-07 01:48:16.234000 # ÖйúλÓÚ+8ʱ¼ä£¬Óë±¾µØʱ¼äÏà²î8

    # fromtimestamp(tmstmp): 2010-04-07 09:48:16.234000

    # utcfromtimestamp(tmstmp): 2010-04-07 01:48:16.234000

    datetimeÀàÌṩµÄʵÀý·½·¨ÓëÊôÐÔ£¨ºÜ¶àÊôÐÔ»ò·½·¨ÔÚdateºÍtimeÖÐÒѾ­³öÏÖ¹ý£¬ÔÚ´ËÓÐÀàËƵÄÒâÒ壬ÕâÀïÖ»ÂÞÁÐÕâЩ·½·¨Ãû£¬¾ßÌ庬Òå²»ÔÙÖð¸öÕ¹¿ª½éÉÜ£¬¿ÉÒԲο¼ÉÏÎĶÔdateÓëtimeÀàµÄ½²½â£¬

µçÄÔ×ÊÁÏ

¡¶PythonÄ£¿éѧϰ datetime½éÉÜ¡·(https://www.unjs.com)¡££©£º

    •datetime.year¡¢month¡¢day¡¢hour¡¢minute¡¢second¡¢microsecond¡¢tzinfo£º

    •datetime.date()£º»ñÈ¡date¶ÔÏó£»

    •datetime.time()£º»ñÈ¡time¶ÔÏó£»

    •datetime.replace([year[, month[, day[, hour[, minute[, second[, microsecond[, tzinfo]]]]]]]])£º

    •datetime.timetuple()

    •datetime.utctimetuple()

    •datetime.toordinal()

    •datetime.weekday()

    •datetime.isocalendar()

    •datetime.isoformat([sep])

    •datetime.ctime()£º·µ»ØÒ»¸öÈÕÆÚʱ¼äµÄC¸ñʽ×Ö·û´®£¬µÈЧÓÚtime.ctime(time.mktime(dt.timetuple()))£»

    •datetime.strftime(format)

    ÏñdateÒ»Ñù£¬Ò²¿ÉÒÔ¶ÔÁ½¸ödatetime¶ÔÏó½øÐбȽϣ¬»òÕßÏà¼õ·µ»ØÒ»¸öʱ¼ä¼ä¸ô¶ÔÏ󣬻òÕßÈÕÆÚʱ¼ä¼ÓÉÏÒ»¸ö¼ä¸ô·µ»ØÒ»¸öеÄÈÕÆÚʱ¼ä¶ÔÏó¡£ÕâÀï²»ÌṩÏêϸµÄÀý×Ó£¬¿´¿Í×Ô¼º¶¯ÊÖÊÔÒ»ÏÂ~~

    ¸ñʽ×Ö·û´®

    datetime¡¢date¡¢time¶¼ÌṩÁËstrftime()·½·¨£¬¸Ã·½·¨½ÓÊÕÒ»¸ö¸ñʽ×Ö·û´®£¬Êä³öÈÕÆÚʱ¼äµÄ×Ö·û´®±íʾ¡£Ï±íÊÇ´ÓpythonÊÖ²áÖÐÀ­¹ýÀ´µÄ£¬ÎÒ¶ÔЩ½øÐÐÁ˼òµ¥µÄ·­Ò루·­ÒëµÄÓеãàÞ¿Ú~~£©¡£

    ¸ñʽ×Ö·û ÒâÒå

    %aÐÇÆڵļòд¡£Èç ÐÇÆÚÈýΪWeb

    %AÐÇÆÚµÄȫд¡£Èç ÐÇÆÚÈýΪWednesday

    %bÔ·ݵļòд¡£Èç4Ô·ÝΪApr

    %BÔ·ݵÄȫд¡£Èç4Ô·ÝΪApril

    %c: ÈÕÆÚʱ¼äµÄ×Ö·û´®±íʾ¡££¨È磺 04/07/10 10:43:39£©

    %d: ÈÕÔÚÕâ¸öÔÂÖеÄÌìÊý£¨ÊÇÕâ¸öÔµĵڼ¸Ì죩

    %f: ΢Ã루·¶Î§[0,999999]£©

    %H: Сʱ£¨24СʱÖÆ£¬[0, 23]£©

    %I: Сʱ£¨12СʱÖÆ£¬[0, 11]£©

    %j: ÈÕÔÚÄêÖеÄÌìÊý [001,366]£¨Êǵ±ÄêµÄµÚ¼¸Ì죩

    %m: Ô·ݣ¨[01,12]£©

    %M: ·ÖÖÓ£¨[00,59]£©

    %p: AM»òÕßPM

    %S: Ã루·¶Î§Îª[00,61]£¬ÎªÊ²Ã´²»ÊÇ[00, 59]£¬²Î¿¼pythonÊÖ²á~_~£©

    %U: ÖÜÔÚµ±ÄêµÄÖÜÊýµ±ÄêµÄµÚ¼¸ÖÜ£©£¬ÐÇÆÚÌì×÷ΪÖܵĵÚÒ»Ìì

    %w: ½ñÌìÔÚÕâÖܵÄÌìÊý£¬·¶Î§Îª[0, 6]£¬6±íʾÐÇÆÚÌì

    %W: ÖÜÔÚµ±ÄêµÄÖÜÊý£¨Êǵ±ÄêµÄµÚ¼¸ÖÜ£©£¬ÐÇÆÚÒ»×÷ΪÖܵĵÚÒ»Ìì

    %x: ÈÕÆÚ×Ö·û´®£¨È磺04/07/10£©

    %X: ʱ¼ä×Ö·û´®£¨È磺10:43:39£©

    %y: 2¸öÊý×Ö±íʾµÄÄê·Ý

    %Y: 4¸öÊý×Ö±íʾµÄÄê·Ý

    %z: Óëutcʱ¼äµÄ¼ä¸ô £¨Èç¹ûÊDZ¾µØʱ¼ä£¬·µ»Ø¿Õ×Ö·û´®£©

    %Z: ʱÇøÃû³Æ£¨Èç¹ûÊDZ¾µØʱ¼ä£¬·µ»Ø¿Õ×Ö·û´®£©

    %%: %% => %

    Àý×Ó£º

    ¸´ÖÆ´úÂë´úÂëÈçÏÂ:

    dt = datetime.now()

    print '(%Y-%m-%d %H:%M:%S %f): ', dt.strftime('%Y-%m-%d %H:%M:%S %f')

    print '(%Y-%m-%d %H:%M:%S %p): ', dt.strftime('%y-%m-%d %I:%M:%S %p')

    print '%%a: %s ' % dt.strftime('%a')

    print '%%A: %s ' % dt.strftime('%A')

    print '%%b: %s ' % dt.strftime('%b')

    print '%%B: %s ' % dt.strftime('%B')

    print 'ÈÕÆÚʱ¼ä%%c: %s ' % dt.strftime('%c')

    print 'ÈÕÆÚ%%x£º%s ' % dt.strftime('%x')

    print 'ʱ¼ä%%X£º%s ' % dt.strftime('%X')

    print '½ñÌìÊÇÕâÖܵĵÚ%sÌì ' % dt.strftime('%w')

    print '½ñÌìÊǽñÄêµÄµÚ%sÌì ' % dt.strftime('%j')

    print '½ñÖÜÊǽñÄêµÄµÚ%sÖÜ ' % dt.strftime('%U')

    # # ---- ½á¹û ----

    # (%Y-%m-%d %H:%M:%S %f): 2010-04-07 10:52:18 937000

    # (%Y-%m-%d %H:%M:%S %p): 10-04-07 10:52:18 AM

    # %a: Wed

    # %A: Wednesday

    # %b: Apr

    # %B: April

    # ÈÕÆÚʱ¼ä%c: 04/07/10 10:52:18

    # ÈÕÆÚ%x£º04/07/10

    # ʱ¼ä%X£º10:52:18

    # ½ñÌìÊÇÕâÖܵĵÚ3Ìì

    # ½ñÌìÊǽñÄêµÄµÚ097Ìì

    # ½ñÖÜÊǽñÄêµÄµÚ14ÖÜ

    ÕâЩ¾ÍÊÇdatetimeÄ£¿éµÄ»ù±¾ÄÚÈÝ£¬×ÜËãдÍêÁË~~oh yeah~~

    QQ¿Õ¼ä ËѺü΢²© ÈËÈËÍø ¿ªÐÄÍø °Ù¶ÈËѲظü¶à

    Tags£ºPython datetime

    ¸´ÖÆÁ´½ÓÊղر¾ÎÄ´òÓ¡±¾ÎĹرձ¾ÎÄ·µ»ØÊ×Ò³

    ÉÏһƪ£ºPythonÔËÐеÄ17¸öʱÐÂÊÖ³£¼û´íÎóС½á

    ÏÂһƪ£ºwindowsÏÂwxPython¿ª·¢»·¾³°²×°ÓëÅäÖ÷½·¨

   

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