Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Python ¿½±´¶ÔÏó£¨É±´deepcopyÓëdz¿½±´copy£©

>>> import copy
>>> a = [1,2,3,4,['a','v']]
>>> b = a
>>> b
[1, 2, 3, 4, ['a', 'v']]
>>> c = copy.copy(a)
>>> c
[1, 2, 3, 4, ['a', 'v']]
>>> d = copy.deepcopy(a)
>>> d
[1, 2, 3, 4, ['a', 'v']]
>>> a.append(5)
>>> a
[1, 2, 3, 4, ['a', 'v'], 5]
>>> b
[1, 2, 3, 4, ['a', 'v'], 5]
>>> c
[1, 2, 3, 4, ['a', 'v']]
>>> d
[1, 2, 3, 4, ['a', 'v']]
>>> a[4].append('c')
>>> a
[1, 2, 3, 4, ['a', 'v', 'c'], 5]
>>> b
[1, 2, 3, 4, ['a', 'v', 'c'], 5]
>>> c
[1, 2, 3, 4, ['a', 'v', 'c']]
>>> d
[1, 2, 3, 4, ['a', 'v']]
>>>


Ïà¹ØÎĵµ£º

Python×Ö·û´®µÄencodeÓëdecode

 
Ê×ÏÈÒª¸ãÇå³þ£¬×Ö·û´®ÔÚPythonÄÚ²¿µÄ±íʾÊÇunicode±àÂ룬Òò´Ë£¬ÔÚ×ö±àÂëת»»Ê±£¬Í¨³£ÐèÒªÒÔunicode×÷ΪÖмä±àÂ룬¼´ÏȽ«ÆäËû±àÂëµÄ×Ö·û´®½âÂ루decode£©³Éunicode£¬ÔÙ´Óunicode±àÂ루encode£©³ÉÁíÒ»ÖÖ±àÂë¡£
decodeµÄ×÷ÓÃÊǽ«ÆäËû±àÂëµÄ×Ö·û´®×ª»»³Éunicode±àÂ룬Èçstr1.decode('gb2312')£¬±íʾ½«gb2312±àÂëµÄ×Ö· ......

python ÖÐÎÄÂÒÂë ÎÊÌâÉîÈë·ÖÎö

 
ת×Ô:http://hi.baidu.com/%C1%EE%BA%FC%CF%F3/blog/item/efb76fb7f0411dc437d3ca20.html
 
ÔÚ±¾ÎÄÖУ¬ÒÔ'¹þ'À´½âÊÍ×÷ʾÀý½âÊÍËùÓеÄÎÊÌ⣬“¹þ”µÄ¸÷ÖÖ±àÂëÈçÏ£º
  1. UNICODE (UTF8-16)£¬C854£»
  2£® UTF-8£¬E59388£»
  3£® GBK£¬B9FE¡£
Ò»¡¢pythonÖÐ ......

²ËÄñѧPython£¨Ò»£©

   Ϊ³äʵ×Ô¼ºÄÇÆ½Ó¹µÄ֪ʶ¿â£¬´Ó½ñÌ쿪ʼ£¬Ñ§Ï°PythonÓïÑÔ¡£   Ì«¸ßÉîµÄ×ÊÁÏ¿´²»¶®£¬µ±Á˱¾×î¼òµ¥µÄPython¼òÃ÷½Ì³Ì£¬ÖÐÎİæchm¸ñʽµÄ¡£²»Ëµ·Ï»°ÁË£¬¿ªÊ¼½øÈëPythonµÄÊÀ½ç°É¡£ £¨Ò»£©°²×°Python    дÕâÆªÎÄÕÂʱ£¬PythonµÄ×îа汾ÊÇ3.1£¬ÎÒϲ»¶ÓÃ×îÐµģ¬¾ÍÏÂÁËа汾µÄ¡£Ò»Â·NextÏÂÈ¥£¬ÎÒµÄC ......

¶ÔpythonµÄisinstanceµÄÈÏʶ

>>> class objA:
...     pass
...
>>> A = objA()
>>> B = 'a','V'
>>> B
('a', 'V')
>>> C = 'a string'
>>> print instance(A,objA)
Traceback (most recent call last):
  File "<stdin>", line 1, in < ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ