{"id":7169,"date":"2025-01-08T16:30:10","date_gmt":"2025-01-08T07:30:10","guid":{"rendered":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/?p=7169"},"modified":"2025-01-08T16:35:41","modified_gmt":"2025-01-08T07:35:41","slug":"python-%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%88%e3%82%84%e9%85%8d%e5%88%97%e3%81%ab%e8%a6%81%e7%b4%a0%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/7169\/","title":{"rendered":"Python \u306e\u30ea\u30b9\u30c8\u3084\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u305f\u308a\u9593\u5f15\u3044\u305f\u308a\u9006\u9806\u306b\u3057\u305f\u308a"},"content":{"rendered":"
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<\/div>\n
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Python \u306e list \u3068 numpy.ndarray \u306b\u304b\u304b\u308f\u308b\u5099\u5fd8\u9332\u3002\u6247\u5f62\u306e\u5185\u90e8\u3092\u5857\u308a\u3064\u3076\u3059<\/a>\u6642\u306b\u4f7f\u3063\u3066\u307f\u3088\u3046\u3068\u3057\u3066\u5c11\u3057\u306f\u307e\u3063\u305f\u306e\u3067\u3002\u3064\u3044\u3067\u306b\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u3068\u304d\u306e\u70b9\u306e\u9593\u5f15\u304d\u65b9\u306a\u3069\u3082\u3064\u3044\u3067\u306b\u5099\u5fd8\u9332\u3068\u3057\u3066\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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<\/div>\n
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\u30ea\u30b9\u30c8\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b<\/h3>\n

+<\/code> \u3067\u30ea\u30b9\u30c8\u306e\u7d50\u5408<\/h4>\n

\u30ea\u30b9\u30c8\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f +<\/code> \u304c\u4f7f\u3048\u308b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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In\u00a0[1]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u30ea\u30b9\u30c8 a<\/code> \u306e\u6700\u521d\u306b 0<\/code> \u3092\u8ffd\u52a0\u3057\u305f\u30ea\u30b9\u30c8\u3092\u8868\u793a\u3059\u308b\u4f8b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[2]:<\/div>\n
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[<\/span>0<\/span>]<\/span> +<\/span> a<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Out[2]:<\/div>\n
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[0, 1, 2, 3, 4, 5]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u30ea\u30b9\u30c8 a<\/code> \u306e\u6700\u5f8c\u306b 6<\/code> \u3068 7<\/code> \u3092\u8ffd\u52a0\u3057\u305f\u30ea\u30b9\u30c8\u3092\u8868\u793a\u3059\u308b\u4f8b\u3002<\/p>\n
\u30ea\u30b9\u30c8 a<\/code> \u3068 [6, 7]<\/code> \u3092\u7d50\u5408\u3059\u308c\u3070\u3044\u3044\u306e\u3067…<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[3]:<\/div>\n
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a<\/span> +<\/span> [<\/span>6<\/span>,<\/span> 7<\/span>]<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Out[3]:<\/div>\n
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[1, 2, 3, 4, 5, 6, 7]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3057\u3066\u3082 a<\/code> \u305d\u306e\u3082\u306e\u306f\u5909\u308f\u3089\u306a\u3044\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[4]:<\/div>\n
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a<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Out[4]:<\/div>\n
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[1, 2, 3, 4, 5]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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+=<\/code> \u3067\u6700\u5f8c\u306b\u30ea\u30b9\u30c8\u3092\u8ffd\u52a0<\/h4>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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+=<\/code> \u3067\u30ea\u30b9\u30c8 a<\/code> \u306e\u6700\u5f8c\u306b\u8981\u7d20\u3042\u308b\u3044\u306f\uff08\u8907\u6570\u306e\u8981\u7d20\u3068\u3057\u3066\u306e\uff09\u30ea\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u4f8b\uff1a<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[5]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\na<\/span> +=<\/span> [<\/span>6<\/span>]<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n\r\na<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\na<\/span> +=<\/span> [<\/span>6<\/span>,<\/span> 7<\/span>]<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n[1, 2, 3, 4, 5, 6]\r\n[1, 2, 3, 4, 5]\r\n[1, 2, 3, 4, 5, 6, 7]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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.append()<\/code> \u3067\u6700\u5f8c\u306b\u8981\u7d20\u3092\u8ffd\u52a0<\/h4>\n
a.append()<\/code> \u3067\u30ea\u30b9\u30c8 a<\/code> \u306e\u6700\u5f8c\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u4f8b\uff1a<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[6]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\na<\/span>.<\/span>append<\/span>(<\/span>6<\/span>)<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n[1, 2, 3, 4, 5, 6]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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.extend()<\/code> \u3067\u6700\u5f8c\u306b\u30ea\u30b9\u30c8\u3092\u9023\u7d50<\/h4>\n
.append()<\/code> \u3067\u306f\uff081\u500b\u306e\uff09\u8981\u7d20\u306e\u307f\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\uff08\u8907\u6570\u500b\u306e\u8981\u7d20\u3068\u3057\u3066\u306e\uff09\u30ea\u30b9\u30c8\u3092\u9023\u7d50\u3059\u308b\u306b\u306f .extend()<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[7]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\na<\/span>.<\/span>extend<\/span>([<\/span>6<\/span>,<\/span> 7<\/span>])<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n[1, 2, 3, 4, 5, 6, 7]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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.insert()<\/code> \u3067\u6307\u5b9a\u4f4d\u7f6e\u306b\u8981\u7d20\u3092\u633f\u5165<\/h4>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[8]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n\r\na<\/span>.<\/span>insert<\/span>(<\/span>2<\/span>,<\/span> 2.5<\/span>)<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n[1, 2, 2.5, 3, 4, 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[9]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n\r\na<\/span>.<\/span>insert<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>)<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n[0, 1, 2, 3, 4, 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u30ea\u30b9\u30c8\u306e\u5b9a\u6570\u500d\u306f\u5404\u8981\u7d20\u306e\u5b9a\u6570\u500d\u3067\u306f\u306a\u3044<\/h4>\n
\u30ea\u30b9\u30c8\u306e\u5404\u8981\u7d20\u30922\u500d\u3059\u308b\u3064\u3082\u308a\u3067\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u304f\u3068\uff0c\u5168\u7136\u9055\u3046\u610f\u5473\u306b\u306a\u308b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[10]:<\/div>\n
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a<\/span>*<\/span>2<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Out[10]:<\/div>\n
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[0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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a*2 = a + a<\/code> \u306e\u3053\u3068\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[11]:<\/div>\n
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a<\/span> +<\/span> a<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Out[11]:<\/div>\n
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[0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u30ea\u30b9\u30c8 a<\/code> \u306e\u5168\u3066\u306e\u8981\u7d20\u30922\u500d\u3059\u308b\u306b\u306f…<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[12]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\n# Python \u7684\uff1f\u306a\u65b9\u6cd5\u3067\u5404\u8981\u7d20\u30922\u500d\u3059\u308b<\/span>\r\na2<\/span> =<\/span> [<\/span>2<\/span>*<\/span>n<\/span> for<\/span> n<\/span> in<\/span> a<\/span>]<\/span>\r\nprint<\/span>(<\/span>a2<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1, 2, 3, 4, 5]\r\n[2, 4, 6, 8, 10]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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NumPy \u306e import<\/h3>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[13]:<\/div>\n
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import<\/span> numpy<\/span> as<\/span> np<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b np.append()<\/code><\/h3>\n
NumPy \u306e\u914d\u5217\u306b\u8981\u7d20\u3084\u30ea\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f np.append()<\/code> \u3092\u4f7f\u3046\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[14]:<\/div>\n
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b<\/span> =<\/span> np<\/span>.<\/span>arange<\/span>(<\/span>1<\/span>,<\/span> 6<\/span>)<\/span>\r\nprint<\/span>(<\/span>b<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1 2 3 4 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u914d\u5217 b<\/code> \u306e\u5148\u982d\u306b 0<\/code> \u3092\u8ffd\u52a0\u3059\u308b\u4f8b\uff1a<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[15]:<\/div>\n
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print<\/span>(<\/span>np<\/span>.<\/span>append<\/span>(<\/span>0<\/span>,<\/span> b<\/span>))<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[0 1 2 3 4 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u914d\u5217 b<\/code> \u306e\u6700\u5f8c\u306b 6<\/code> \u3068 7<\/code> \u3092\u8ffd\u52a0\u3059\u308b\u4f8b\uff1a<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[16]:<\/div>\n
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print<\/span>(<\/span>np<\/span>.<\/span>append<\/span>(<\/span>b<\/span>,<\/span> [<\/span>6<\/span>,<\/span> 7<\/span>]))<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1 2 3 4 5 6 7]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n
<\/div>\n
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\u914d\u5217\u3078\u306e\u8db3\u3057\u7b97\u306f\u8981\u7d20\u306e\u8ffd\u52a0\u3067\u306f\u306a\u3044<\/h4>\n
NumPy \u306e\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u3064\u3082\u308a\u3067\uff0c\u9593\u9055\u3063\u3066 +<\/code> \u3092\u4f7f\u3046\u3068\uff0c\u5168\u7136\u9055\u3046\u610f\u5473\u306b\u306a\u308b\u3002\uff08\u5404\u8981\u7d20\u306b\u6570\u5024\u3092\u8db3\u3057\u3066\u3057\u307e\u3046\u3002\uff09<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[17]:<\/div>\n
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print<\/span>(<\/span>b<\/span> +<\/span> 6<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[ 7  8  9 10 11]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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\u914d\u5217\u30fb\u30ea\u30b9\u30c8\u9593\u306e\u5909\u63db\u3068\u300c\u8db3\u3057\u7b97\u300d\u300c\u639b\u3051\u7b97\u300d<\/h3>\n
.tolist()<\/code><\/h4>\n
\u3069\u3046\u3057\u3066\u3082\u914d\u5217 b<\/code> \u306b\u5bfe\u3057\u3066 +<\/code> \u3092\u4f7f\u3063\u3066\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u305f\u3044\u306e\u306a\u3089\uff0c\u3044\u3063\u305d\u306e\u3053\u3068 .tolist()<\/code> \u3067\u914d\u5217\u304b\u3089\u30ea\u30b9\u30c8\u306b\u5909\u63db\u3057\u3066\u3057\u307e\u3046\u624b\u3082\u3042\u308b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[18]:<\/div>\n
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b<\/span> =<\/span> np<\/span>.<\/span>arange<\/span>(<\/span>1<\/span>,<\/span> 6<\/span>)<\/span>\r\nprint<\/span>(<\/span>b<\/span>)<\/span>\r\nprint<\/span>(<\/span>b<\/span> +<\/span> 6<\/span>)<\/span>\r\n\r\nb<\/span>.<\/span>tolist<\/span>()<\/span> +<\/span> [<\/span>6<\/span>]<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[1 2 3 4 5]\r\n[ 7  8  9 10 11]\r\n<\/pre>\n<\/div>\n<\/div>\n
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Out[18]:<\/div>\n
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[1, 2, 3, 4, 5, 6]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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np.array()<\/code><\/h4>\n
\u307e\u305f\uff0c\u30ea\u30b9\u30c8 a<\/code> \u306e\u5404\u8981\u7d20\u306e\u5b9a\u6570\u500d\u3092\u3069\u3046\u3057\u3066\u3082 *<\/code> \u3067\u3084\u308a\u305f\u3044\u306a\u3089\uff0c\u3044\u3063\u305d\u306e\u3053\u3068 np.array()<\/code> \u3067 NumPy \u914d\u5217\u306b\u5909\u63db\u3057\u3066\u3057\u307e\u3046\u624b\u3082\u3042\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[19]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\nprint<\/span>(<\/span>a<\/span>*<\/span>2<\/span>)<\/span>\r\n\r\nA<\/span> =<\/span> np<\/span>.<\/span>array<\/span>(<\/span>a<\/span>)<\/span>\r\nprint<\/span>(<\/span>A<\/span>*<\/span>2<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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[1, 2, 3, 4, 5]\r\n[1, 2, 3, 4, 5, 1, 2, 3, 4, 5]\r\n[ 2  4  6  8 10]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u8981\u7d20\u3092\u9593\u5f15\u304d\u3059\u308b\uff08\u98db\u3070\u3059\uff09<\/h3>\n
\u30c7\u30fc\u30bf\u3092\u30b0\u30e9\u30d5\u306b\u3059\u308b\u3068\u304d\u306a\u3069\uff0c\u30c7\u30fc\u30bf\u70b9\u304c\u3042\u307e\u308a\u306b\u591a\u3044\u5834\u5408\u306f\u9069\u5b9c\u9593\u5f15\u3044\u3066\u30b0\u30e9\u30d5\u306b\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u3060\u308d\u3046\u3002\u305d\u3093\u306a\u3068\u304d\u306b\uff0c\u30ea\u30b9\u30c8\u3084\u914d\u5217\u306e\u8981\u7d20\u3092\u9593\u5f15\u304d\u3059\u308b\u4f8b\u3002<\/p>\n
\u305f\u3068\u3048\u3070\u8981\u7d20\u30922\u3064\u3054\u3068\u306b\uff081\u3064\u98db\u3070\u3057\u3066\uff09\u8868\u793a\u3059\u308b\u306b\u306f…<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[20]:<\/div>\n
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a<\/span> =<\/span> list<\/span>(<\/span>range<\/span>(<\/span>1<\/span>,<\/span>6<\/span>))<\/span>\r\nprint<\/span>(<\/span>a<\/span>)<\/span>\r\nprint<\/span>(<\/span>a<\/span>[::<\/span>2<\/span>])<\/span>\r\n\r\nb<\/span> =<\/span> np<\/span>.<\/span>arange<\/span>(<\/span>1<\/span>,<\/span> 6<\/span>)<\/span>\r\nprint<\/span>(<\/span>b<\/span>)<\/span>\r\nprint<\/span>(<\/span>b<\/span>[::<\/span>2<\/span>])<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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[1, 2, 3, 4, 5]\r\n[1, 3, 5]\r\n[1 2 3 4 5]\r\n[1 3 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u4e0a\u8a18\u306e\u3088\u3046\u306a\u624b\u8efd\u306a\u65b9\u6cd5\u3092\u77e5\u3089\u306a\u3044\u5834\u5408\u306f\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u57fa\u672c\uff1f\u306b\u623b\u3063\u3066\u5c11\u3057\u56de\u308a\u304f\u3069\u3044\u307b\u3046\u307b\u3046\u3067… \uff08\u79c1\u3082\u304b\u3064\u3066\u306f\u77e5\u3089\u306a\u304b\u3063\u305f\u306e\u3067\uff0c\u3053\u3093\u306a\u56de\u308a\u304f\u3069\u3044\u65b9\u6cd5\u3067\u9593\u5f15\u3044\u3066\u3044\u308b\u30da\u30fc\u30b8\u304c\u3042\u308b\u3002\uff09<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[21]:<\/div>\n
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[<\/span>a<\/span>[<\/span>i<\/span>]<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>0<\/span>,<\/span> len<\/span>(<\/span>a<\/span>),<\/span> 2<\/span>)]<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Out[21]:<\/div>\n
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[1, 3, 5]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u30b9\u30e9\u30a4\u30b9<\/h3>\n
\u3088\u308a\u4e00\u822c\u7684\u306b\u306f a[start:stop:step]<\/code> \u306e\u3088\u3046\u306b\u3057\u3066\u30ea\u30b9\u30c8\u3084\u914d\u5217\u306e\u4e00\u90e8\u3092\u9593\u5f15\u3044\u3066\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u4e0a\u8a18\u306e a[::2]<\/code> \u306f start<\/code> \u3068 stop<\/code> \u3092\u7701\u7565\u3057\uff0cstep = 2<\/code> \u3068\u3057\u305f\u4f8b\u306b\u306a\u308b\u3002<\/p>\n
step<\/code> \u3092\u7701\u7565\u3059\u308b\u3068\uff0cstep = 1<\/code> \u3068\u306a\u308b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[22]:<\/div>\n
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# \u6700\u521d\u306e2\u3064\u306e\u8981\u7d20\u3092\u53d6\u308a\u51fa\u3059<\/span>\r\nprint<\/span>(<\/span>a<\/span>[:<\/span>2<\/span>])<\/span>\r\nprint<\/span>(<\/span>b<\/span>[:<\/span>2<\/span>])<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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[1, 2]\r\n[1 2]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[23]:<\/div>\n
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# \u6700\u5f8c\u306e2\u3064\u306e\u8981\u7d20\u3092\u53d6\u308a\u51fa\u3059<\/span>\r\nprint<\/span>(<\/span>a<\/span>[<\/span>-<\/span>2<\/span>:])<\/span>\r\nprint<\/span>(<\/span>b<\/span>[<\/span>-<\/span>2<\/span>:])<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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[4, 5]\r\n[4 5]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u9006\u9806\u306b<\/h3>\n
step<\/code> \u306e\u5024\u3092\u30de\u30a4\u30ca\u30b9\u306b\u3059\u308b\u3068\uff0c\u9006\u9806\u306b\u8868\u793a\u3059\u308b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[24]:<\/div>\n
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print<\/span>(<\/span>a<\/span>[::<\/span>2<\/span>])<\/span>\r\nprint<\/span>(<\/span>a<\/span>[::<\/span>-<\/span>2<\/span>])<\/span>\r\nprint<\/span>(<\/span>b<\/span>[::<\/span>-<\/span>2<\/span>])<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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[1, 3, 5]\r\n[5, 3, 1]\r\n[5 3 1]\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[25]:<\/div>\n
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# [::-1] \u3068\u3059\u308b\u3068\u9006\u9806\u306b\u8868\u793a<\/span>\r\nprint<\/span>(<\/span>a<\/span>[::<\/span>-<\/span>1<\/span>])<\/span>\r\nprint<\/span>(<\/span>b<\/span>[::<\/span>-<\/span>1<\/span>])<\/span>\r\n\r\n# \u9006\u9806\u306b\u3059\u308b\u5225\u89e3<\/span>\r\nlist<\/span>(<\/span>reversed<\/span>(<\/span>a<\/span>))<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
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[5, 4, 3, 2, 1]\r\n[5 4 3 2 1]\r\n<\/pre>\n<\/div>\n<\/div>\n
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Out[25]:<\/div>\n
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[5, 4, 3, 2, 1]<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Python \u306e list \u3068 numpy.ndarray \u306b\u304b\u304b\u308f\u308b\u5099\u5fd8\u9332\u3002\u6247\u5f62\u306e\u5185\u90e8\u3092\u5857\u308a\u3064\u3076\u3059\u6642\u306b\u4f7f\u3063\u3066\u307f\u3088\u3046\u3068\u3057\u3066\u5c11\u3057\u306f\u307e\u3063\u305f\u306e\u3067\u3002\u3064\u3044\u3067\u306b\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u3068\u304d\u306e\u70b9\u306e\u9593\u5f15\u304d\u65b9\u306a\u3069\u3082\u3064\u3044\u3067\u306b\u5099\u5fd8\u9332\u3068\u3057\u3066\u3002<\/p>
\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[11],"tags":[],"class_list":["post-7169","post","type-post","status-publish","format-standard","hentry","category-python","nodate","item-wrap"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/7169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/users\/33"}],"replies":[{"embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/comments?post=7169"}],"version-history":[{"count":10,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/7169\/revisions"}],"predecessor-version":[{"id":9986,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/7169\/revisions\/9986"}],"wp:attachment":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/media?parent=7169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/categories?post=7169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/tags?post=7169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}