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為什么按“運行結果”它總是一片空白，改了代碼按“運行結果”顯示的是舊結果。這是我自己電腦不好還是這個頁面沒完善？
2017-10-10
源自：初識Python 3-2
正在回答
你沒縮進
for x in [ '1','2','3','4','5','6','7','8','9' ]:
? ? for y in [ '0','1','2','3','4','5','6','7','8','9' ]:
? ? ? ? if x < y :
? ? ? ? ? ?print x+y
for x in [ '0','1','2','3','4','5','6','7','8','9' ]:
? ? for y in [ '0','1','2','3','4','5','6','7','8','9' ?]:
? ? ? ? if x<y and x!='0':
? ? ? ? ? ? print x+y
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2017-10-18
你沒縮進
2017-10-10
for x in [ '1','2','3','4','5','6','7','8','9' ]:
? ? for y in [ '0','1','2','3','4','5','6','7','8','9' ]:
? ? ? ? if x < y :
? ? ? ? ? ?print x+y
2017-10-10
for x in [ '0','1','2','3','4','5','6','7','8','9' ]:
? ? for y in [ '0','1','2','3','4','5','6','7','8','9' ?]:
? ? ? ? if x<y and x!='0':
? ? ? ? ? ? print x+y