A code to remember

Flattening nested dict in Python

March 09, 2020 | 1 minute read

Flattening a nested dict/json with list as some keys’ value.

February 01, 2020 | less than 1 minute read

Setting up WSL (Windows Subsystem for Linux)

December 29, 2019 | 2 minute read

Some tips to use Scoop.

December 29, 2019 | less than 1 minute read

Github can host package releases, I will show you how to use Powershell to retrieve the latest release download url.

December 21, 2019 | less than 1 minute read

How to use painless scripted field to working on objects which might be null or missing in some documents.

October 27, 2019 | 1 minute read

Install Python3 on Ubuntu by using official source.

September 25, 2019 | 1 minute read

Share common methods across SQLAlchemy db model classes by using mixin.

September 14, 2019 | 3 minute read

Test-NetConnection is too slow if the remote port is not opened due to its timeout setting. Use System.Net.Sockets.TcpClient instead.

July 30, 2019 | 3 minute read

Python twine uses ~/.pypirc as its default config file, but for some reasons it doesn’t work on Windows.

July 13, 2019 | 6 minute read

Filtering a pandas dataframe with series, query, or numpy methods.