Sample Code/Day_01_SampleCode_v2.ipynb

{"nbformat":4,"nbformat_minor":0,"metadata":{"colab":{"name":"01 Example_維元.ipynb","provenance":[]},"kernelspec":{"display_name":"Python 3","language":"python","name":"python3"},"language_info":{"codemirror_mode":{"name":"ipython","version":3},"file_extension":".py","mimetype":"text/x-python","name":"python","nbconvert_exporter":"python","pygments_lexer":"ipython3","version":"3.6.5"}},"cells":[{"cell_type":"markdown","metadata":{"id":"X6zWvixQLxD5"},"source":["# 範例\n","***"]},{"cell_type":"markdown","metadata":{"id":"73rNI8UPLxEH"},"source":["# [教學目標]\n","\n","* 認識 Numpy 套件與 Array 陣列定義\n","* 正確使用 Array 的常用屬性\n","* 能夠掌握 Array 的重要特性\n"]},{"cell_type":"code","metadata":{"id":"tXi4tx_0LxEJ","outputId":"0062aa15-835c-4fc5-c1c3-5ba099489570"},"source":["# 載入 NumPy 套件\n","import numpy as np\n","\n","# 檢查正確載入與版本\n","print(np)\n","print(np.__version__)"],"execution_count":null,"outputs":[{"output_type":"stream","text":["<module 'numpy' from '/Users/wei/.virtualenvs/py3/lib/python3.6/site-packages/numpy/__init__.py'>\n","1.16.1\n"],"name":"stdout"}]},{"cell_type":"code","metadata":{"id":"78WDGPV3LxEN","outputId":"9ee60c7b-e754-482d-834b-ff6efbdf88fd"},"source":["# 從一個陣列開始\n","\n","a = np.arange(15).reshape(3, 5)\n","print(a) # 利用 print(...) 印出陣列\n","a # 利用 Jupyter 印出陣列"],"execution_count":null,"outputs":[{"output_type":"stream","text":["[[ 0  1  2  3  4]\n"," [ 5  6  7  8  9]\n"," [10 11 12 13 14]]\n"],"name":"stdout"},{"output_type":"execute_result","data":{"text/plain":["array([[ 0,  1,  2,  3,  4],\n","       [ 5,  6,  7,  8,  9],\n","       [10, 11, 12, 13, 14]])"]},"metadata":{"tags":[]},"execution_count":2}]},{"cell_type":"code","metadata":{"id":"z8ZypF43LxES","outputId":"f8eb0e87-00e0-42e6-8124-0baf311d98b1"},"source":["# 陣列的常用屬性\n","\n","print('ndim: ', a.ndim)\n","print('shape: ', a.shape)\n","print('size: ', a.size)\n","print('dtype: ', a.dtype)\n","print('itemsize: ', a.itemsize)\n","print('data: ', a.data)\n"],"execution_count":null,"outputs":[{"output_type":"stream","text":["ndim:  2\n","shape:  (3, 5)\n","size:  15\n","dtype:  int64\n","itemsize:  8\n","data:  <memory at 0x1124b3558>\n"],"name":"stdout"}]},{"cell_type":"code","metadata":{"id":"4INQZCfnLxET","outputId":"cd9913db-fd67-4d35-e1ee-8214b3e98a11"},"source":["# List 與 Array 的轉換\n","\n","print('list(a): ', list(a))\n","print('tolist(): ', a.tolist())"],"execution_count":null,"outputs":[{"output_type":"stream","text":["list(a):  [array([0, 1, 2, 3, 4]), array([5, 6, 7, 8, 9]), array([10, 11, 12, 13, 14])]\n","tolist():  [[0, 1, 2, 3, 4], [5, 6, 7, 8, 9], [10, 11, 12, 13, 14]]\n"],"name":"stdout"}]},{"cell_type":"code","metadata":{"id":"ndo3FOBsVfua"},"source":[""],"execution_count":null,"outputs":[]}]}