jupyter notebook (一)

（一） 

如何运行： 

1. Click in the cell below and press "Ctrl+Enter" to run the code
       or
2. Click in the cell below and press "Shift+Enter" to run the code and move to the next cell
    
3. Menu: Cell...
   a. > Run Cells runs the highlighted cell(s)
   b. > Run All Above runs the highlighted cell and above
   c. > Run All Below runs the highlighted cell and below

下面图片分别显示了三种不同的运行方式：

1. 

（二）

在线网页版jupyter notebooks :

add a notebook library

• New: https://notebooks.azure.com/library > New Library
• Link: from a shared Azure Notebook library link > open link, sign in> clone and Run
• Add: open library > Add Notebooks > from computer > navigate to file(s)

working in notebook cells

• Markdown cells display text in a web page format. Markdown is code that formats the way the cell displays (this cell is Markdown)
   
• Code cells contain python code and can be interpreted and run from a cell. Code cells display code and output.
   
• in edit or previously run: cells can display in editing mode or cells can display results of code having been run

 （三）

编辑cells

edit mode

• text cells in editing mode show markdown code
• Markdown cells keep editing mode appearance until the cell is run
• code (python 3) cells in editing look the same after editing, but may show different run output
• clicking another cell moves the green highlight that indicates which cell has active editing focus

cells need to be saved

• the notebook will frequently auto save
• best practice is to manually save after editing a cell using "Ctrl + S" or alternatively, Menu: File > Save and Checkpoint

add a cell

• Highlight any cell and then... add a new cell using Menu: Insert > Insert Cell Belowor Insert Cell Above
• Add with Keyboard Shortcut: "ESC + A" to insert above or "ESC + B" to insert below

choose cell type

• Format cells as Markdown or Code via the toolbar dropdown or Menu: Cell > Cell Type > Code or Markdown
• Cells default to Code when created but can be reformatted from code to Markdown and vice versa

change notebook page language

• The course uses Python 3 but Jupyter Notebooks can be in Python 2 or 3 (and a language called R)
• To change a notebook to Python 3 go to "Menu: Kernel > Change Kernel> Python 3"

 

对cells进行复制、删除、合并等操作如图所示：

注：paste是粘贴的意思（也可以用来创建空白的cell），cells在这里翻译成代码块 ，undo指代撤销操作