Ben Chuanlong Du's Blog

It is never too late to learn.

Tips on Darglint

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Tips and Traps

  1. It is suggested that you avoid using darglint directly, but instead you can use flake8 which will automatically call darglint if it exists.

  2. Improperly escaped \n causes darglint …

Tips on Jinja

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Get the Dependencies of a Python Package Without Installing It

After installing a Python package, you can use the command pip3 show pkg to check detailed information about it. What if you want to get information about a Python package without installing? The RESTAPI https://pypi.org/pypi/pkg/json returns detailed information of the Python package pkg.

Note: The recursive version of dependencies implemented bellow does not take into consideration of versions, so it might not return the correct dependencies of a Python packages.

Koalas is pandas API on PySpark

Run Commands on Remote Machines

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

On a Sinsgle Machine

SSH

  1. The pipeline command is run locally. If you want the pipeline command to run remotely, place the whole command to be run remotely in double/single …

Hands on the json Module in Python

Tips and Traps

  1. It is suggested that you avoid using JSON for serializing and deserializing data. Please refer to Shotcomes of JSON for detailed discussions on this. TOML and YAML are better text-based alternatives to JSON. If serialization and deserialization is done in Python only, pickle