A blog of Python-related topics and code.
Plotting COVID-19 cases
Posted by: christian in Featured on frontpage on 27 Mar 2020
The Centre for Systems Science and Engineering (CSSE) at Johns Hopkins University publishes daily statistics of the number of confirmed cases of COVID-19 by country on its GitHub page. The short script below pulls data from this page to plot a bar chart of cases and growth in cases as a function of time for a given country. For example:
The Trapped Knight
Posted by: christian on 26 Mar 2020
The Trapped Knight problem is a chess-based problem apparently invented by Neil Sloane and giving rise to a finite number sequence in his Online Encyclopedia of Integer Sequences (OEIS A316667).
PyValem: a Python package for parsing chemical formulas and states
Posted by: christian on 24 Mar 2020
PyValem is a Python package, for parsing, representing and manipulating the formulas of simple chemical species, their states and reactions. Its source is available on GitHub under a GPL licence, and it can be installed from the Python Package Index, PyPI, using pip:
Recamán's sequence
Posted by: christian in Featured on frontpage on 29 Feb 2020
The Recamán sequence is a famous sequence invented by the Colombian mathematician, Bernardo Recamán Santos. It is defined by the following algorithm, starting at $a_0 = 0$:
The Möbius function and the Mertens conjecture
Posted by: christian in Featured on frontpage on 25 Jan 2020
This blog post was inspired by Holly Krieger's video for Numberphile.