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INADA Naoki committed b09de8f

Fix bug in sample code

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 上のルールに従えば、ネストしたループも内包表記でかけます。 ::
 
     >>> [(x,y)
-    ...  for x in range(10) if x%2==0
-    ...  for y in range(20) if y%3==0]
+    ...  for x in range(10) if x%3==0
+    ...  for y in range(20) if y%7==0]
     [(0, 0), (0, 7), (0, 14), (3, 0), (3, 7), (3, 14), (6, 0), (6, 7), (6, 14), (9, 0), (9, 7), (9, 14)]
 
 ただし、ネストした内包表記は読みにくくなりやすいので、読みにくいと思ったら
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