>>> a = [[1]]*10
>>> a
[[1], [1], [1], [1], [1], [1], [1], [1], [1], [1]]
>>> a[1][0] = 2
>>> a
[[2], [2], [2], [2], [2], [2], [2], [2], [2], [2]]
>>>
涔熷氨鏄錛岃繖10涓璞″疄闄呬笂鏄寚鍚戠殑鍚屼竴涓猯ist瀵硅薄銆?br>榪欐槸bug錛岃繕鏄痜eature錛熸垨鑰呮槸浼樺寲錛?br>鎬諱箣鏄洰璁╀漢鐏ぇ鐨勫氨鏄簡銆?br>鐢?a = [[0] for x in range(10)] 榪欑鍐欐硶灝辨病鏈夎繖涓棶棰樹簡銆?br>
2. 娣辨嫹璐?br>
>>> a = [[0] for x in range(10)]
>>> a
[[0], [0], [0], [0], [0], [0], [0], [0], [0], [0]]
>>> b = list(a)
>>> b
[[0], [0], [0], [0], [0], [0], [0], [0], [0], [0]]
>>> a[1][0] = 2
>>> b
[[0], [2], [0], [0], [0], [0], [0], [0], [0], [0]]
>>>
b = list(a)
鎰忓懗鐫a鍜宐涓兘瀛樻斁榪?0涓寚閽堛傛寚鍚慬0], [0], [0] .... 榪?0涓璞°?br>a[1][0] = 2 鍚?a 鑷繁鐨勫兼病鏈夋敼鍙橈紝鏀瑰彉鐨勬槸絎簩涓?[0] 瀵硅薄銆?br>鐢變簬 b 涔熸槸鎸囧悜瀹冪殑錛屾墍浠ユ墦鍗癰鐨勬椂鍊欎細(xì)鍙戠幇榪欎竴鐐廣?br>榪欎釜闂鏄嚜宸辯粡甯哥姱鐨勯棶棰橈紝澶у閮芥槸debug鍗婂ぉ鎵嶇煡閬撴庝箞鍥炰簨銆?br>浣跨敤
import copy
b = copy.deepcopy(a)
鍙互瑙e喅榪欎釜闂銆?br>
3. 濡備綍閬垮厤榪欎簺闂
瑕佹椂鍒昏寰楋紝python涓殑瀵硅薄灝卞彧鏈変袱縐嶏紝mutable鍜宨mmutable銆備篃灝辨槸鍙敼鍙樺拰涓嶅彲鏀瑰彉銆?br>immutable鐨勫寘鎷細(xì)str tuple int ...
mutable鍙敼鍙樼殑鍖呮嫭錛歭ist dict ...
immutable鐨勫氨鏄師瀛愮殑銆俶utable閲岄潰瀛樻斁鐨勯兘鏄寚鍚憁utable鎴栬卛mmutable鐨勬寚閽堛?br>璋冭瘯鐨勬椂鍊欙紝鍙互浣跨敤id(obj)鑾峰緱姣忎釜瀵硅薄鐨刬d銆傝繖涓矊浼煎氨鏄痯ython綆$悊鐨勮繍琛屾椂鐨勫璞$殑鍦板潃銆?br>濡傛灉鍙戠幇涓や釜obj鐨刬d鐩稿悓錛岄偅浠栦滑灝辨槸鍚屼竴涓揣銆傘?br> 
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