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    pythonÌṩÁËÓÐÐò(sequence)ÀàÐÍ£¨×Ö·û´®£¬Ôª×飬ÁÐ±í¶¼ÊÇÓÐÐòÀàÐÍ£©£¬²¢ÇÒÌṩÁËÌØÊâµÄÓï·¨À´·½±ã¶ÔÕâЩÀàÐͽøÐвÙ×÷£¬×î³£ÓõÄÓÐÇÐÆ¬²Ù×÷¡£Í¬Ò»ÓÐÐòÀàÐ͵ĶÔÏóÖ®¼äÖ§³Ö¡±+¡±²Ù×÷·û£¬ÓÃÀ´Á¬³ÉÒ»¸öеÄÓÐÐò¶ÔÏó£¬ÓÐÐò¶ÔÏóÒ²¿ÉÒÔÓëÒ»¸öÕûÊý½øÐÐÏà³Ë£¬µÃµ½Ò»¸öеÄÓÐÐò¶ÔÏó¡£ÔÚµ÷ÊÔµÄʱºò£¬ÎÒ¾­³£Ê¹ÓÃÕâÑùµÄÓï¾äÀ´´òÓ¡Ò»¸ö·Ö¸îÐУºprint ¡®-¡® * 50¡£ÔÚ¶ÔÓÐÐòÀàÐͽøÐС°*¡± »òÕß ¡°+¡±²Ù×÷µÄʱºò£¬ÒªÇ§ÍòСÐÄ¡£½ñÌ죬ÎÒµÄͬʾÍÓöµ½Á˷dz£ÓôÃÆµÄÎÊÌâ¡£¿´ÏÂÃæÒ»¶Î´úÂ룺 #coding=gbk
class Point(object):
def __init__(self, x, y):
self.x = x
self.y = y
def __repr__(self):
return '(%d, %d)' % (self.x, self.y)
itemList = [Point(-1, -1)] * 5
# ¶ÔÁбíÔªËØ½øÐи³Öµ
for i in range(5):
itemList[i].x = i
itemList[i].y = i

print itemList
ÉÏÃæµÄ´úÂë´´½¨Ò»¸ö°üº¬5¸öPoint¶ÔÏóµÄÁÐ±í£¬È»ºóÔÚÒ»¸öforÑ­»·ÖжÔÁбíÖеÄÿ¸ö¶ÔÏóµÄÊôÐÔ½øÐи³Öµ¡£ÔËÐÐÉÏÃæµÄ´úÂ룬ÔÚÆÁÄ»ÉÏÏÔʾµÄ½á¹ûÊÇʲô£¿ÊÇ [(0, 0), (1, 1), (2, 2), (3, 3), (4, 4)] Â𣿠Õâ¶Î´úÂë°ÑÎÒÃǶ¼ÆÛÆ­ÁË¡£½á¹ûÊÇ£º[(4, 4), (4, 4), (4, 4), (4, 4), (4, 4)]¡£ÎªÊ²Ã´»áÕâÑùÄØ£¿´ð°¸ÔÚÓÚÒýÓÃÀàÐÍÓëÖµÀàÐÍ¡£[Point(-1, –1)] * 5£¬·µ»ØÒ»¸ö°üº¬Îå¸öÔªËØµÄÁÐ±í£¬ÁбíÖеÄÔªËØÆäʵÒýÓõÄÊÇͬһ¸ö¶ÔÏó£¬Ê¹ÓÃforÑ­»·ÔÚ¶ÔÁÐ±í½øÐгõʼ»¯µÄʱºò£¬ÐÞ¸ÄµÄÆäʵÊÇͬһ¸ö¶ÔÏóµÄÖµ¡£ËùÒÔ£¬½á¹û¾Í¡­¡­ Ò»¿ªÊ¼£¬ÎÒÃÇÓôÃÆÁ˺ܳ¤Ê±ºò£¬Ë­Ò²Ã»Òâʶµ½Õâ¸öÎÊÌâ¡£ÔÚµ÷ÊÔÁËÐí¾ÃÖ®ºó²Å·¢ÏÖ£¬Å¶£¬Ô­À´ÉϵÛÔÚÕâÀï¡£Ö»Òª×÷¼òµ¥µÄÐ޸쬽á¹û¾Í»áÊÇÎÒÃÇÏëÒªµÄ£º
# ...
# itemList = [Point(-1, -1)] * 5
itemList = [Point(-1, -1) for i in range(5)]
# ...


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