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German-style strings in Apache Arrow
Version 1.4 of the Apache Arrow Columnar Format added a new way to store variable-length values, the Variable-size Binary View Layout. It comes in two types: BinaryView for raw…
Installing your Python package on a Windows machine that does not have internet access
Suppose you've developed a Python package called MyPackage on Linux, with specific package requirements, and need to install it on a Windows machine that lacks internet access, on…
Reading a SQL table by chunks with Pandas
In this short Python notebook, we want to load a table from a relational database and write it into a CSV file. In order to that, we temporarily store the data into a Pandas…
Le tour de france history web scraping
This file downloads raw data about every rider of every Tour de France (from 1903 up to 2020). This data will then be postprocessed and stored in CSV format. Executing this…
Some Pre-commit git hooks for Python
Pre commit hooks are a great way to automatically check and clean the code. They are executed when committing changes to git . This can be useful when several people are working…
Logistic regression with JAX
JAX is a Python package for automatic differentiation from Google Research. It is a really powerful and efficient library. JAX can automatically differentiate some Python code…
Lunch break, fetching AROME temperature forecast in Lyon
Since a "small" heat wave is coming, I would like to get some temperature forecast for the next hours in my neighborhood, from my JupyterLab notebook. We are going to fetch the…
Outlier and Change Point Detection in Data Integration Performance Metrics
Data integration involves combining data residing in different sources, and providing users with a unified view of them. In this post, we are interested in detecting performance…
A Quick study of air quality in Lyon with Python
The aim of this post is to use Python to fetch air quality data from a web service and to create a few plots. We are going to: look at some daily data from earlier this year,…