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while ºóÃæ¸úÌõ¼þ±í´ïʽ£¬(:)ºóÃæ¸úÓï¾ä¿é£¬Äã¿ÉÒÔÔÚÕâ¶ÎÓï¾ä¿éÀïÐÞ¸ÄÌõ¼þ±í´ïʽµÄijЩ±äÁ¿£¬µ±Ìõ¼þ±í´ïʽ Ϊ¼ÙµÄʱºòÍ˳öÑ­»·¡£ÀýÈ磺
flag = 5
while flag > 0:
#ÕâÀïÊÇÄãµÄ´úÂë
flag -= 1
#if flag == 3: break
#if flag == 3: continue
print flag
µ±È»ÄãÒ²¿ÉÒÔÔÚÊʵ±µÄʱºòÓà break Ö±½ÓÌø³öÑ­»·¡£
Ö´ÐÐ continue Óï¾ä±íʾ ºöÂÔ¸ÃÑ­»· continue ÒÔºóµÄ´úÂ룬ֱ½Ó½øÐÐÏÂÒ»´Îµü´ú£¨Ñ­»·£©£¬¼´Ìøµ½ Ìõ¼þ±í´ïʽ ´¦¡£
×¢ÒâÒ»µã£¬Èç¹ûÒ»¿ªÊ¼ Ìõ¼þ±í´ïʽ Ϊ¼Ù£¬ÄÇôwhile ÀïµÄ´úÂëÒ»´Î¶¼²»»áÖ´ÐС£
Ìõ¼þ±í´ïʽ Ò²¿ÉÒÔÊÇÒ»¸öÖµ £¬Èç True ,ÕâʱºòÒ»°ãÐèÒª break Óï¾äÅäºÏÑ­»·µÄÍ˳ö¡£
Ò»¸öÑ­»·µÄ¼òµ¥Àý×Ó
from random import randint
from time import sleep,ctime
'''Ëæ»úµÃµ½100¸öÊý£¨×Ö·û´®±íʾ£©£¬È»ºó¼ä¸ô2ÃëÑ­»·3´Î£¬Ã¿´ÎÊä³öÆäÖÐÒ»¶ÎÊý×Ö'''
aList = ''
for i in range(100): #µÃµ½100¸öËæ»úÊýµÄ×Ö·û´®±íʾ
aList += str(randint(0,9))
reFlag = 5 #Ñ­»· 5 ´Î
while reFlag > 0:
getNum = int(aList[randint(0,49):randint(50,99)]) #µÃµ½Ëæ»úN¸öÊý×Ö
sleep(2)
print getNum
reFlag -= 1
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def Average(list):
r=0
for i in list:
r+=i
result=r/len(list)
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Äã¿ÉÒÔµ¼Èë decimal Ä£¿é µÄ Decimal Àࣺ
>>>from decimal


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