回答編集履歴
3
追記
test
CHANGED
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@@ -62,4 +62,12 @@
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62
62
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63
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64
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65
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-
イテラブルを添え字指定できますので。べんり。
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65
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イテラブルを添え字指定できますので。べんり。スライスも使えます。
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66
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67
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```Python
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68
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69
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>>> data[::3]
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70
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71
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array([0, 3, 6, 9])
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72
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73
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```
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2
追記
test
CHANGED
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@@ -11,6 +11,18 @@
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11
11
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>>>
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12
12
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>>> [data[i] for i in range(0, 10, 3)]
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14
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15
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[0, 3, 6, 9]
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```
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18
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20
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21
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スライスも使えます。
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22
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23
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```Python
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24
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25
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>>> data[::3]
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14
26
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15
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[0, 3, 6, 9]
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28
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1
追記
test
CHANGED
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@@ -15,3 +15,39 @@
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15
15
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[0, 3, 6, 9]
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16
16
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```
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18
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20
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21
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---
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22
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23
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NumPyアレイならこっちの書き方も出来ますね。
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24
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25
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```Python
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26
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27
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>>> import numpy as np
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28
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29
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>>> data = np.arange(10)
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>>>
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33
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>>> data
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34
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35
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array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
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36
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37
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>>>
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38
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39
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>>> data[[i for i in range(0, 10, 3)]]
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40
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array([0, 3, 6, 9])
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>>>
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44
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45
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>>> data[range(0, 10, 3)]
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46
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47
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array([0, 3, 6, 9])
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48
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49
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```
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50
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51
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52
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53
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+
イテラブルを添え字指定できますので。べんり。
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