When i start mongo db on macOS console by run command mongod, i got below error message. {“t”:{“$date”:”2020-09-09T10:45:30.049+08:00″},”s”:”E”, “c”:”NETWORK”, “id”:23024, “ctx”:”initandlisten”,”msg”:”Failed to unlink socket file”,”attr”:{“path”:”/tmp/mongodb-27017.sock”,”error”:”Permission denied”}}
How To Fix Failed To Unlink Socket File Error When Start Mongo DB On MacOS Read More »
In this article, i will tell you how to reset root user’s password when your mac machine is running.
How To Reset MacOS Root User Password Read More »
When I run command mkdir in mac os to create a folder, it gives me an error message mkdir: /data: Read-only file system like below. This article will tell you how to fix it. sh-3.2# mkdir /data mkdir: /data: Read-only file system
How To Fix Read-Only File System Error When Run Mkdir Command On MacOS Read More »
In the previous article, I have told you How To Create Slideshow From Jupyter Notebook. In this article I will introduce a python library RISE to you, with this library, you can create a slideshow from the jupyter notebook file easily.
How To View Jupyter Notebook As Slideshow With RISE Read More »
After you write down your Jupyter notebook file content, if you want to show the Jupyter notebook content to others like a PPT, you can read this article. This article will tell you how to convert a Jupyter notebook file to a PPT-style presentation Html file.
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In this article i will show you an example about how to implement progress bar in python console. It is useful when you write some python console program.
How To Implement Progress Bar With Percentage In Python Standard Output Read More »
When you run print(‘ hello python ‘) in python code, it always print the text on screen, this is because python standard output is screen console. But we always want to print the text to a file instead of screen console, especially print exception error messages when exception occurred in python source code.
How To Print Text From Standard Output (Stdout) To File In Python Read More »
When I execute a system program using the python subprocess module’s run method in windows, I meet an error message like below.
When you run a python script file in the iPython command console or jupyter notebook web page, if your source code has an exception, it will throw out the exception and stop at the line where the exception occurred. In this situation, you can set breakpoints and run into iPython debug mode, then you can
How To Debug Python Code In Ipython And Jupyter Notebook Read More »
IPython provide some magic command ( ?, ??, %pdef, %pdoc, %psource, %pfile ) for you to look inside python objects( variable, function, class. module, object etc ). In this article i will tell you how to use them to introspect python objects in IPython. Below example need an ipython environment, if you do not install
How To Introspect ( Look Inside ) Python Objects In IPython Read More »