回答編集履歴
1
テキスト修正
test
CHANGED
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@@ -6,9 +6,7 @@
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6
6
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7
7
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```python3
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8
8
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9
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-
cities
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9
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+
cities = sorted(set(df["city1"].values) | set(df["city2"].values))
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10
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-
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11
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-
cities = sorted([*cities_set])
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10
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11
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12
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