如何突破Python中的多個循環？給定以下代碼(不起作用)：while True:
#snip: print out current state
while True:
ok = get_input("Is this ok? (y/n)")
if ok.lower() == "y": break 2 #this doesn't work :(
if ok.lower() == "n": break
#do more processing with menus and stuff有辦法讓這件事成功嗎？或者，如果用戶滿意的話，我是否需要做一次檢查來打破輸入循環，然后另一次，更有限制地，在外部循環中簽出所有內容？
3 回答
蠱毒傳說
TA貢獻1895條經驗 獲得超3個贊
for a in xrange(10): for b in xrange(20): if something(a, b): # Break the inner loop... break else: # Continue if the inner loop wasn't broken. continue # Inner loop was broken, break the outer. break
continuecontinue
ABOUTYOU
TA貢獻1812條經驗 獲得超5個贊
class GetOutOfLoop( Exception ):
passtry:
done= False
while not done:
isok= False
while not (done or isok):
ok = get_input("Is this ok? (y/n)")
if ok in ("y", "Y") or ok in ("n", "N") :
done= True # probably better
raise GetOutOfLoop
# other stuffexcept GetOutOfLoop:
pass添加回答
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