Data mining-01

Catalog

One 、JupyterNotebook Introduce

① brief introduction

② Part of the

(1) Web applications

(2) file

③Jupyter Notebook The main characteristics of

Two 、 install Jupyter Notebook

1. install

① Installation premise

② Use Anaconda install

③ Use pip Command to install  

3、 ... and 、 function Jupyter Notebook

① The default port starts

② Specify the port to start  

③ Start the server without opening the browser

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One 、JupyterNotebook Introduce

① brief introduction

Jupyter Notebook Is a web based application for interactive computing . It can be applied to the whole process of calculation ： Development 、 Documentation 、 Run the code and display the results .

In short ,Jupyter Notebook It's in the form of a web page , It can be in the web page Write code directly and Run code , Code Running results It will also display the program directly under the code block . Such as in the process of programming need to write documentation , It can be written directly in the same page , Convenient for timely explanation and explanation .

② Part of the

(1) Web applications

Web application is based on web form 、 Combined with the preparation of documentation 、 The mathematical formula 、 Interactive computing and other rich media tools . in short , Web application is a tool that can realize various functions .

(2) file

namely Jupyter Notebook All interactive computing in 、 Document the instructions 、 The mathematical formula 、 Images and other rich media forms of input and output , It's all in the form of documents .

These documents are saved with the suffix .ipynb Of JSON Format file , Not only is it easy to version control , It's also easy to share .

Besides , Documents can also be exported as ：HTML、LaTeX、PDF Equiform .

③Jupyter Notebook The main characteristics of

① Programming with Syntax highlighting 、 Indent 、tab completion The function of .

② You can run the code directly through the browser , At the same time, the running result is displayed under the code block .

③ Display the calculation results in rich media format . Rich media formats include ：HTML,LaTeX,PNG,SVG etc. .

④ When writing instruction documents or statements to code , Support Markdown grammar .

⑤ Support use LaTeX Write a mathematical note .

Two 、 install Jupyter Notebook

1. install

① Installation premise

install Jupyter Notebook The premise is to install Python（3.3 Version and above , or 2.7 edition ）.

② Use Anaconda install

If you are little white , Then I suggest you install Anaconda To solve Jupyter Notebook Installation problems , because Anaconda Has been automatically installed for you Jupter Notebook And other tools , also python In more than 180 Science packs and their dependencies .

Routinely , Installed Anaconda It has been automatically installed for you when you release Jupyter Notebook Of , But if it's not installed automatically , Then at the terminal （Linux or macOS Of “ terminal ”,Windows Of “Anaconda Prompt”, Hereinafter referred to as “ terminal ”） Enter the following command to install ：

conda install jupyter notebook

③ Use pip Command to install  

1. hold pip Upgrade to the latest version

• Python 3.x

pip3 install --upgrade pip

• Python 2.x

pip install --upgrade pip

• Be careful ： The old version of pip In the installation Jupyter Notebook In the process or facing the problem that dependencies cannot be installed synchronously . therefore Strongly recommended The first pip Upgrade to the latest version .

2. install Jupyter Notebook

• Python 3.x

pip3 install jupyter

• Python 2.x

pip install jupyter

3、 ... and 、 function Jupyter Notebook

If you have any jupyter notebook Command questions , Consider checking the official help documentation , The order is as follows ：

jupyter notebook --help

or

jupyter notebook -h

① The default port starts

Enter the following command in the terminal ：

jupyter notebook

After executing the command , A series of messages will be displayed in the terminal notebook Server information , At the same time, the browser will start automatically Jupyter Notebook.

The contents displayed on the terminal during startup are as follows ：

$ jupyter notebook
[I 08:58:24.417 NotebookApp] Serving notebooks from local directory: /Users/catherine
[I 08:58:24.417 NotebookApp] 0 active kernels
[I 08:58:24.417 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/
[I 08:58:24.417 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).

• Be careful ： After the Jupyter Notebook All operations , Please keep the terminal Do not shut down. , Because once the terminal is turned off , It will disconnect the link with the local server , You will not be able to Jupyter Notebook Other operations in .

By default, the browser address bar will display ：http://localhost:8888. among ,“localhost” It means the machine ,“8888” It's the port number .

URL

If you meanwhile Several Jupyter Notebook, Due to the default port “8888” occupied , Therefore, the number in the address bar will start from “8888” rise , Start one more Jupyter Notebook The number is added 1, Such as “8889”、“8890”……

② Specify the port to start  

If you want to customize the port number to start Jupyter Notebook, You can enter the following commands in the terminal ：

jupyter notebook --port <port_number>

among ,“<port_number>” Is a custom port number , Write it directly in the form of numbers in the command , No angle brackets around numbers “<>”. Such as ：jupyter notebook --port 9999, That is, when the port number is “9999” The server starts Jupyter Notebook.

③ Start the server without opening the browser

If you just want to start Jupyter Notebook But I'm not going to go to the main page right away , Then you don't need to start the browser immediately . Input in the terminal ：

jupyter notebook --no-browser

here , The started server information will be displayed on the terminal , And after the server starts , Show the link to open the browser page . When you need to launch a browser page , Just copy the link , And paste it in the address bar of the browser , Tap enter to change to your Jupyter Notebook page .

In the example figure, I started multiple at the same time when I finished the above content Jupyter Notebook, So show me “8888” Port number occupied , Finally assigned to me is “8889”.