It varies via personal preference but if it's a one-off Python script I've made, I'll drop it in a python folder in the root of the project. You can put it anywhere but I generally like to keep them in a folder on the root.
Creating a dedicated directory project (e.g. resources/scripts). By placing the scripts in the directory and then referencing them in the Laravel applications.
@davidvandertuijn we are testing the convert files from xlsx to csv in another language, because actually we are with performance problem in a feature.
We used PhpSpreadsheet for read/write xls and csv files. We are also testing the libraries Fast Excel to improve performance.