some existing implementations:

https://github.com/lisette-espin/pychimerge
https://github.com/night18/ChiMerge
https://github.com/raiyan1102006/ChiMerge
https://gist.github.com/alanzchen/17d0c4a45d59b79052b1cd07f531689e?short_path=f2e54c6

Reference to original article can be found in first link