回答編集履歴
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@@ -51,3 +51,33 @@
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# 152.77777778, 152.77777778, 152.77777778, 152.77777778])
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```
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ちなみに各要素の長さが異なる2次元配列を flatten する場合は itertools.chain.from_iterable を使うとよいです。
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```python
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from itertools import chain
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lst = [
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[1, 2, 3],
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[4, 5, 6, 7, 8, 9]
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]
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lst = list(chain.from_iterable(lst))
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print(lst)
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# [1, 2, 3, 4, 5, 6, 7, 8, 9]
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```
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