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@@ -99,7 +99,13 @@ assert a.keys() == ('g', 'ball_3', 'ball_4')
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del a['ball_3']
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assert a.keys() == ('g', 'ball_4')
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del a['ball_4']
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+assert a.keys() == ('g',)
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+del a['g']
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+assert len(a) == 0
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-# assert a.keys() == ('g',)
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-# del a['g']
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-# assert len(a) == 0
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+# ultra test!!
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+a = {'0': 0, '1': 1}
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+for i in range(2, 1000):
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+ a[str(i)] = i
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+ del a[str(i - 2)]
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+ assert a[str(i - 1)] == i - 1
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blueloveTH