Basic configuration and usage of Jupiter notebook

Preface

This article will introduce a powerful lightweight integrated development environment ：Jupyter Notebook Basic configuration process and usage of .

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 .——Jupyter Notebook The official introduction

In short ,Jupyter Notebook It's in the form of a web page , It can be in the web page direct Write and run code , The running results of the code will also be displayed 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 .

Jupyter Notebook The main characteristics of ：

1. Programming with syntax highlighting 、 Indent 、tab The function of complement .
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 .

install

1. Use as follows pip Command to install

pip install jupyter

2. Verify that the installation was successful

jupyter notebook --no-browser

If the following appears , be Jupyter Notebook Already in normal operation , Press Ctrl+c End operation

[I 00:38:58.788 NotebookApp] Serving notebooks from local directory: G:/Jupyter Notebook
[I 00:38:58.788 NotebookApp] Jupyter Notebook 6.2.0 is running at:
[I 00:38:58.788 NotebookApp] http://localhost:8888/?token=5f376397a2519ea17b951e5968ed4621a7a254efd1b7807d
[I 00:38:58.788 NotebookApp]  or http://127.0.0.1:8888/?token=5f376397a2519ea17b951e5968ed4621a7a254efd1b7807d
[I 00:38:58.788 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 00:38:58.788 NotebookApp]

    To access the notebook, open this file in a browser:
        file:///C:/Users/%E7%8E%8B%E9%B9%8F%E5%AE%87/AppData/Roaming/jupyter/runtime/nbserver-31952-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=5f376397a2519ea17b951e5968ed4621a7a254efd1b7807d
     or http://127.0.0.1:8888/?token=5f376397a2519ea17b951e5968ed4621a7a254efd1b7807d

3. start-up

jupyter notebook

So far, it can be used normally Jupyter Notebook 了 .

** Be careful ：** Normally, this command will automatically pop up the browser , If you encounter Unable to eject normally browser , Click here to Check out the solution .

4. Modify note path

Jupyter Notebook The default storage path of the file is C disc , For ease of operation , It is recommended to modify the path .

Enter the following command to find jupyter_notebook_config.py The path to the configuration file , And open .

jupyter notebook --generate-config

Ctrl+f Search for c.NotebookApp.notebook_dir = '' Code location , Take out the comments , Add the path you want to set between the single quotation marks , as follows ：

c.NotebookApp.notebook_dir = 'G:/Jupyter Notebook'

Be careful ： The path should use a backslash

preservation , sign out . Complete path modification .

Use

New notes

Here's the picture , Click the right side. New Pull down button , choice Python 3, A note is created .

rename

New notebook The default name is ：Untitled.

Two renaming methods are recommended ：

1. When notebook Running time ： Directly in notebook page , Click on the file name , You can modify the file name .
2. When notebook Stop running ： Get into File tab , Select the file whose name you want to change （ Check the left side of the document ）, Click on Rename Button , You can modify the file name .

Write code and run

Pictured , explain ：

1. New notebook By default, there is only one cell , In front with In [] As a mark , This cell is used to write code .
2. Click the button in the toolbar function （Run） Run the code in the cell , The run results are displayed below the cells .
3. In [] The numbers added in the represent ： The order in which the cell runs on the kernel .
4. Running code ： In the tag [] Added a *; The small circle in the upper right corner of the page becomes a solid .
5. End of code run ：[] Medium * Change to numbers ; The small circle in the upper right corner of the page becomes hollow .

preservation notebook

Save automatically ： Yes notebook After modification , By default , In two minutes notebook Will be automatically saved .

Be careful ：notebook When automatically saved , The corresponding log point file will not change

Save manually ： Click the Save button to manually save .（ The log point file changes ）

Fallback log point

You can go back to the last record point at any time , To undo any changes made during this period .

** Log point file ：** Each time a new one is created notebook when , Will automatically create a record point file , Used to record the notebook All States at a certain moment .

** Location ：** stay notebook In the same level directory , There is one named .ipynb_checkpoints The catalog of , It contains every notebook Record point file of .

** Naming rules ：**notebook The name of the file -checkpoint.ipynb

** Fallback log point ：** Click on the File, Click... In the pop-up menu Revert to Checkpoint Date and time in , For fallback .

Change theme

For a better experience , You can change the default theme .

Install third party libraries jupyterthemes：

pip install jupyterthemes

If using Anaconda, Then use the following command ：

conda install jupyterthemes

List all available topics ：

jt -l

Various Theme show （ chart ）

Use a topic ：

jt -t  The name of an available topic 

Restore the default ：

jt -r

Print out the command jt And all optional parameters ：

jt -h

Some commonly used optional parameters ：

Optional parameters	Meaning of parameters	The default value is
-T	Toolbar Visible（ The toolbar is visible ）	nothing
-N	Name Visible（ Name visible ）	nothing
-kl	Kernel Logo Visible（ kernel Logo so ）	nothing
-f	Code Font（ The font of the code ）	nothing
-fs	Code Font-Size（ Font size of the code ）	11
-tf	Text Cell Font（ The font of the text cell ）	nothing
-tfs	Text Cell Font-Size（ Font size of text cells ）	13
-nf	Notebook Font（Notebook The font of ）	nothing
-nfs	Notebook Font-Size（Notebook Font size of ）	13
-ofs	Output Area Font-Size（ The font size of the output area ）	8.5

For more information on other parameters, click this link ：https://github.com/dunovank/jupyter-themes

Specific use cases , I prefer onedork The theme style , So make changes on this topic .

jt -t onedork -f hasklig -cellw 80% -T -N -kl -altmd -fs 16 -ofs 14

Possible problems

Input jupyter notebook The command cannot pop up the browser normally

Enter the following command to find jupyter_notebook_config.py The path to the configuration file , And open .

jupyter notebook --generate-config

Ctrl+f Search for c.NotebookApp.password = Code location , After that （ Another line ）, Input ：

import webbrowser
webbrowser.register('chrome', None, webbrowser.GenericBrowser(u'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe'))
c.NotebookApp.browser = 'chrome'

** Be careful ：** What we use here is chrome browser , Pay attention to chrome.exe The path is filled in correctly , Use Double slash .

preservation , sign out . Complete the modification .

Conclusion

In case of problems or usage, continue to add ~