Python Tutorial

This example will tell you how to calculate a list of number’s average values in python.

This article introduces how to use the Python XLWT library to generate excel spreadsheet tables and export the excel file to HTTP client in Django.

This article will tell you how to use the Python requests module to retrieve a web page content by page URL  and then save the web page content to a local file step by step.

In this article, I will tell you how to use the python openpyxl library to copy one excel sheet data to another excel sheet, the two excel sheets can be in the same excel file or different excel file. If you do not know the openpyxl library, you can read the article How To Create

In this article, I will show you how to use python library openpyxl to easily create an excel workbook, add a worksheet to the workbook, insert cell data and save the workbook object to a local excel file. It will also show you how to read a local excel file and load all the excel

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”}}

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.

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.

When I execute a system program using the python subprocess module’s run method in windows, I meet an error message like below.

Decorators can add new functions or restrictions to the decorated objects without modifying the original source code. There are many kinds of decorators, including function decorators and class decorators. The name of decorator is different in many programming languages. It embodies the decoration pattern in the design pattern and emphasizes the open and closed principle.