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Three years ago, I bought a QNAP TS-453Dmini NAS. Although it has a slow WEB UI and slow restart, it still fits my needs as all of the applications I need are running in Docker.

Recently, I want to move some files from my Mac to NAS to save space. I need a application behave like Dropbox, which can show all the files in the NAS and only download the files I need. I have tried the QSync, but it does not have thumbnails for cloud image and it does not have icons to show the file status. I also tried the Seafile, it’s a powerful application, which requires 4G RAM to run, and there is bug in the thumbnail. I used to have a Synology ARM NAS, the Synology Drive has all the features I need, so I want to run it on my QNAP NAS. After some research, I managed to run Synology and QNAP together on my NAS. Here is the guide.

Nowadays, pyproject.toml becomes the standard configuration file for packaging. Compare with the old setup.py, it adds two feature pep517 and pep518.

pep517 defines two hooks: build_wheel and build_sdist, which is required to build the package from source. Each build backend must implement these two hooks. It makes it possible to create other build backend such as flit or poetry.

Here is the process how sys.path is set in Python, with some parts omitted.

Python Command Line Arguments #

By default, as initialized upon program startup, a potentially unsafe path is prepended to sys.path:

It’s known that Python’s import statement is implemented by __import__ function. In general, if we want to import a module dynamically, we can use import_module function, which is a wrapper around __import__.

The most important difference between these two functions is that import_module() returns the specified package or module (e.g. pkg.mod), while import() returns the top-level package or module (e.g. pkg). – https://docs.python.org/3/library/importlib.html#importlib.import_module

I bought a iPod Video 5.5th Gen 80G recently. It’s only 200 Yuan (about $30) and I’m satisfied with it.

Rockbox #

The original firmware supports few audio format, it even can’t play FLAC. I install rockbox on it, which support FLAC and other format and I can transfer music without using iTunes or Finder. It also support theme and plugin, which makes it more powerful.

The disk performance in WSL2 is poor, it takes a long time to run git status in a host’s repo. Moreover, if you set a fancy shell prompt, it will take a long time to show the prompt. This article will introduce how to speed up Git in WSL2.

In [Packaging] Support Python 3.11 by bebound · Pull Request #26923 · Azure/azure-cli (github.com) , I bumped azure-cli to use Python 3.11. We’ve bump the dependency in other PRs, I thought it should be a small PR, but in the end, a lot of changes are made.

When working on a project with multiple developers, the line ending can be troublesome. This article will explain how to configure line ending in Git.

Basic configuration #

The line ending on Windows is CRLF, on Linux is LF. To prevent the line ending issue, we can set core.autocrlf to true on Windows to let git convert CRLF to LF when commit, and convert LF to CRLF when checkout. It is automatically configured if you install git on Windows.

It’s very common to copy a local file into the container when build docker image. In general, we use COPY command. But it creates a new layer and increase the final image size. If this is a temporal file and we don’t want users waste their storage space, how can we remove it? Here are some approaches.

There is a historical memory leak problem in our Django app and I fixed it recently. As time goes by, the memory usage of app keeps growing and so does the CPU usage.

After some research, I figure out the cause. Some views does not close multiprocessing.Pool after using it. The problem disappears when I use Pool with with statement.