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1.Ëõ½ø:
Ôö¼ÓËõ½ø±íʾÓï¾ä¿éµÄ¿ªÊ¼£¬¶ø¼õÉÙËõ½øÔò±íʾÓï¾ä¿éµÄÍ˳ö.¸ù¾ÝPEPµÄ¹æ¶¨£¬±ØÐëʹÓÃ4¸ö¿Õ¸ñÀ´±íʾÿ¼¶Ëõ½ø.
2. ±í´ïʽ£º
PythonÇø·ÖÁбí(list)ºÍÔª×é(tuple)Á½ÖÖÀàÐÍ¡£listµÄд·¨ÊÇ[1,2,3]£¬¶øtupleµÄд·¨ÊÇ(1,2,3)¡£¿ÉÒԸıälistÖеÄÔªËØ£¬¶ø²»Äܸıätuple¡£ÔÚijЩÇé¿öÏ£¬tupleµÄÀ¨ºÅ¿ÉÒÔÊ¡ÂÔ¡£tuple¶ÔÓÚ¸³ÖµÓï¾äÓÐÌØÊâµÄ´¦Àí¡£Òò´Ë£¬¿ÉÒÔͬʱ¸³Öµ¸ø¶à¸ö±äÁ¿£¬±ÈÈ磺

>>> x, y=1, 2 #ͬʱ¸øx,y¸³Öµ£¬×îÖÕ½á¹û£ºx=1, y=2

PythonʹÓÃ'(µ¥ÒýºÅ)ºÍ"(Ë«ÒýºÅ)À´±íʾ×Ö·û´®¡£ÓëPerl¡¢Unix ShellÓïÑÔ»òÕßRuby¡¢GroovyµÈÓïÑÔ²»Ò»Ñù£¬Á½ÖÖ·ûºÅ×÷ÓÃÏàͬ¡£Ò»°ãµØ£¬Èç¹û×Ö·û´®ÖгöÏÖÁËË«ÒýºÅ£¬¾ÍʹÓõ¥ÒýºÅÀ´±íʾ×Ö·û´®;·´Ö®ÔòʹÓÃË«ÒýºÅ¡£

PythonÖ§³ÖÁбíÇиî(list slices)£¬¿ÉÒÔÈ¡µÃÍêÕûÁбíµÄÒ»²¿·Ö¡£Ö§³ÖÇиî²Ù×÷µÄÀàÐÍÓÐstr, bytes, list, tupleµÈ¡£ËüµÄÓï·¨ÊÇ...[left:right]»òÕß...[left:right:stride]¡£¼Ù¶¨nums±äÁ¿µÄÖµÊÇ[1, 3, 5, 7, 8, 13, 20]£¬ÄÇôÏÂÃæ¼¸¸öÓï¾äÎªÕæ£º

¡ô nums[2:5] == [5, 7, 8] ´ÓϱêΪ2µÄÔªËØÇиϱêΪ5µÄÔªËØ£¬µ«²»°üº¬Ï±êΪ5µÄÔªËØ¡£

¡ô nums[1:] == [3, 5, 7, 8, 13, 20] Çи×îºóÒ»¸öÔªËØ¡£

¡ô nums[:-3] == [1, 3, 5, 7] ´Ó×ʼµÄÔªËØÒ»Ö±Çиµ¹ÊýµÚ3¸öÔªËØ¡£

¡ô nums[:] == [1, 3, 5, 7, 8, 13, 20] ·µ»ØËùÓÐÔªËØ¡£¸Ä±äеÄÁÐ±í²»»áÓ°Ïìµ½nums¡£

¡ô nums[1:5:2] == [3, 7]

3.º¯Êý
PythonµÄº¯ÊýÖ§³ÖµÝ¹é¡¢Ä¬ÈϲÎÊýÖµ¡¢¿É±ä²ÎÊý£¬µ«²»Ö§³Öº¯ÊýÖØÔØ¡£ÎªÁËÔöÇ¿´úÂëµÄ¿É¶ÁÐÔ£¬¿ÉÒÔÔÚº¯ÊýºóÊéд¡±Îĵµ×Ö·û´®¡°(Documentation Strings£¬»òÕß¼ò³Ædocstrings)£¬ÓÃÓÚ½âÊͺ¯ÊýµÄ×÷ÓᢲÎÊýµÄÀàÐÍÓëÒâÒå¡¢·µ»ØÖµÀàÐÍÓëȡֵ·¶Î§µÈ¡£¿ÉÒÔʹÓÃÄÚÖú¯Êýhelp()´òÓ¡³öº¯ÊýµÄʹÓðïÖú¡£±ÈÈ磺

>>> def randint(a, b):  
...     "Return random integer in range [a, b], including both end points."

4.ÊýѧÔËËã
PythonʹÓÃÓëC¡¢JavaÀàËÆµÄÔËËã·û£¬Ö§³ÖÕûÊýÓ븡µãÊýµÄÊýѧÔËË㡣ͬʱ»¹Ö§³Ö¸´ÊýÔËËãÓëÎÞÇîλÊý(ʵ¼ÊÊÜÏÞÓÚ¼ÆËã»úµÄÄÜÁ¦)µÄÕûÊýÔËËã¡£³ýÁËÇó¾ø¶ÔÖµº¯Êýabs()Í⣬´ó¶àÊýÊýѧº¯Êý´¦ÓÚmathºÍcmathÄ£¿éÄÚ¡£Ç°ÕßÓÃÓÚʵÊýÔËË㣬¶øºóÕßÓÃÓÚ¸´ÊýÔËË㡣ʹÓÃʱÐèÒªÏȵ¼ÈëËüÃÇ£¬±ÈÈ磺

>>> import math  
>>> print(math.sin(math.pi/2))  
1.0




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